RFT5TEP2–Potamogeton is a genus of aquatic, mostly freshwater. His leaves are base narrow, long and thin, vintage line drawing or engraving illustration.
RMRDGEGH–. Fresh-water aquaria: their construction, arrangement, and management, with full information as to the best water-plants and live stock to be kept, how and where to obtain them, and how to keep them in health. Aquariums. WATEB-PLANTS. 85 sum ranging from Is. 6d. to 3s. It should be planted in a pot containing loam and silver sand mixed. It is a rapid grower and a useful and ornamental plant for the tank. I have found that it will not flower well unless it can have as. Fig. 61. Broad-leaved Pond-weed (Potamogeton natans). much sunlight as is compatible with the welfare of the rest of the aquar
RMPG42A1–. Fresh-water aquaria: their construction, arrangement, and management, with full information as to the best water-plants and live stock to be kept, how and where to obtain them, and how to keep them in health. Aquariums. WATEB-PLANTS. 85 sum ranging from Is. 6d. to 3s. It should be planted in a pot containing loam and silver sand mixed. It is a rapid grower and a useful and ornamental plant for the tank. I have found that it will not flower well unless it can have as. Fig. 61. Broad-leaved Pond-weed (Potamogeton natans). much sunlight as is compatible with the welfare of the rest of the aquar
RM2FJNHAJ–Fennel pondweed Potamogeton pectinatus.
RFT5W3CJ–Potamogeton is a genus of aquatic, mostly freshwater, plants of the family Potamogetonaceae. Most are known by the common name pondweed, although many
RM2F2E61D–Potamogeton alpinus BB-1913.
RMW31HGY–Potamogeton illinoensis (as P angustifolius) BB-1913
RMRDTWB7–. British plants; their biology and ecology. Botany; Botany; Plant ecology. AQUATIC VEGETATION 239 lucens (shining pondweed), entirely submerged; yeUow water-lily, mare's-tail, Pilularia, Myriophyllum. and Chara. The water of pools which occur on peaty soil contains a large amount of soluble organic matter, and the vegeta-. Fio. 110.—leoetes lacustris (Quillwoet). tion is characteristic. The most frequent plants are the bladderworts, Potamogeton natans, Scirpus fluitans (float- ing club-rush), Myriophyllum spicatum, and water-violet.. Please note that these images are extracted from scanned pa
RMPFYKN5–. Fresh-water biology. Freshwater biology. THE LARGER AQUATIC VEGETATION 183 nature seem to be able to bring forth either floating or submerged leaves or both as the conditions imposed seem to require. If grow- ing shoots of Ranunculus aquatilis are not allowed to reach the surface of the water only the segmented leaves develop. If speci- mens of Potamogeton heterophylhis are suddenly left stranded by receding water thp floating leaves may persist and be succeeded by more floating leaves, thus enabling the plant to live for a considerable time, often persisting until the rising water returns.
RM2F2E654–Potamogeton friesii abb-cos3643.
RMW31HGM–Potamogeton illinoensis (as P lucens auct non L) BB-1913
RMRDJ18F–. A Manual of botany : being an introduction to the study of the structure, physiology, and classification of plants . Botany. ANOMALOUS LEAVES AND PETIOLES. 99 stipules is not an accidental occurrence taking place after they have been developed, but is intimately connected with the general law, in accordance with which the parts of the plants are formed. Stipules are sometimes large, enveloping the leaves in the young state, and falling off in the progress of growth, as in Picus, Magnolia, and Potamogeton; at other times they are so minute as to be scarcely distinguishable without the aid of
RMPFYKND–. Fresh-water biology. Freshwater biology. l82 FRESH-WATER BIOLOGY. Fig. 255. Potamogelon natans. One floating leaf and three submerged leaves, representing the thread-like form of the monocotyledonous type of sub- merged leaf. (After Gobel.) thread-like leaves are very common and may be the only kind occur- ring on the plant, as in Potamogeton pectinatus, or they may occur on the same plant together with floating leaves, as in Potamogeton natans (Fig. 255). It is to be noticed that most of the monocoty- ledons conform to some one of the types mentioned, while the dicotyledons seem to favor an
RM2F2E63P–Potamogeton gramineus pogr8 002 pvd.
RM2MBWBYT–Floating Pondweed, Potamogeton natans, Schimper, Andreas Franz Wilhelm (botany book, 1900), Laichkraut, Potamot, Flottant
RMW2R0E1–BB-0193 Potamogeton hillii
RMRDYXGX–. Goldfish breeds and other aquarium fishes, their care and propagation; a guide to freshwater and marine aquaria, their fauna, flora and management. Aquariums; Goldfish. AQUATIC PLANTS OF FRESHWATER POTAMOGETON About 40 species and sub-species of Potamogeton, also known as Channel, Pond or Riverweed, the latter from the Greek significance of the botanical name, are native of North America. They are all weedy plants which attach themselves to the bottom of ponds, shallow lakes, streams and canals and grow so luxuriantly as to choke the waterways. They are also known as Stink-grass on account o
RMPFYKNG–. Fresh-water biology. Freshwater biology. Fig. 255. Potamogelon natans. One floating leaf and three submerged leaves, representing the thread-like form of the monocotyledonous type of sub- merged leaf. (After Gobel.) thread-like leaves are very common and may be the only kind occur- ring on the plant, as in Potamogeton pectinatus, or they may occur on the same plant together with floating leaves, as in Potamogeton natans (Fig. 255). It is to be noticed that most of the monocoty- ledons conform to some one of the types mentioned, while the dicotyledons seem to favor another habit, such as is s
RM2F2E64N–Potamogeton nodosus poam11 001 pvda.
RMME49R2–Pondweed, Floating <Potamogeton natans> A flowering branch, B flowering, c flowering clinging leaf with stamen, D fruit, E partial fruit with exposed seedling, F cross section through the partial fruit, G seedling, H plan view of flowering, 1900
RMW2R0D1–BB-0200 Potamogeton pusillus
RMRE3K9M–. Comparative anatomy of the vegetative organs of the phanerogams and ferns;. Plant anatomy; Ferns. 274 â PRIMARY Arrangement of tissues. V. An'OMalous Monocotyledons. Sect; 70. Under this term may be grouped some examples of vascular bundle- systems, which differ fundamentally from that of the very, great majority of Mono- cotyledons. Some of these are found in certain water-plants . the rest in certain Dioscorese, the bundle-system of which approaches very closely to that of the Dico- tyledons. Potamogeton crispus, while it approaches very closely in other anatomical properties to other memb
RMPG3T2J–. The elements of botany embracing organography, histology, vegetable physiology, systematic botany and economic botany ... together with a complete glossary of botanical terms. Botany. adnata (Fig. 73, stip). The stipules of the Tulip-tree serve as bud-^scales, falling ofT soon after the leaves unfold. 44. In the Dock and the Buckwheat family the stipules unite and form a sheath around the stem (Fig. 82), which is called Ochrea. If the outer margins only unite, as in the Buttonwood, a double stipule opposite the leaf is formed. If the inner margin only unite, as in the Pondweed (Potamogeton),
RMW2R0CR–BB-0178 Potamogeton epihydrus
RMRDYXGP–. Goldfish breeds and other aquarium fishes, their care and propagation; a guide to freshwater and marine aquaria, their fauna, flora and management. Aquariums; Goldfish. AQUATIC PLANTS OF FRESHWATER at the base, and larger simple sparingly branched ovate floating leaves. The peduncles of the fruit are as thick as the stems and the nutlets are hard, pitted and with two groves on the back; the embrio forming an in- complete circlet with its apex pointed to the base. Native in canals and streams throughout North America, and flowers in July and August. Potamogeton densus (Linn.) or Close or Broa
RMPG4B6Y–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 324 USTILAGINEAE. to be preceded by a considerable resting-period, during which germination will not take place. D. Martianoffiana (Thiim.). In leaves of Potamogeton natans and P. gramineas. D. occulta (Hoffm.). In fruits of species of Potamogeton. D. intermedia (Setch.). An American species found on leaves of Sagittaria variabilis. D. comari (Berk.). In leaves of Comarum palustre in Britain. D. limosellae (Kunze.).
RMW2R0E6–BB-0174 Potamogeton natans
RMRDWM1N–. Illustrations of the British flora: a series of wood engravings, with dissections, of British plants. Botany; Botany. 965. Potamogeton obtusifolius, M.&K. Ohtuse Pondiveed.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Fitch, W. H. (Walter Hood), 1817-1892; Smith, George Worthington, 1835-1917; Bentham, George, 1800-1884. Handbook of the British flora. London, L. Reeve
RMPG1BXP–. The natural history of the farm; a guide to the practical study of the sources of our living in wild nature. Natural history. Pig. 13. Leaf-form in three common sub- merged plants whose leaves ^ow in whorls surrounding the stem at the nodes: a, the common water-weed (Elodea canadensis or Philotria canadensis); 6, the water horn- wort (Ceratophyllum demersum); c, the water milfoil (MyriO' phyUum).. Fig. 14. Outlines of four common kinds of floating leaves: a, the floating river- weed (Potamogeton natans); 6, the spatter-dock {Nymphaa advena); c, the white water- lily iCastoillia odorata); d,
RMW2R0DH–BB-0187 Potamogeton praelongus
RMRDY70A–. Illustrations of the British flora: a series of wood engravings, with dissections, of British plants. Botany; Botany. 956. Potamogetonpralongus. 957^ potamogeton perfoliatus.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Fitch, W. H. (Walter Hood), 1817-1892; Smith, Worthington George, 1835-1917; Bentham, George, 1800-1884. Handbook of the British flora. London, L. Reeve & Co.
RMW2R0BE–BB-0195 Potamogeton obtusifolius
RMRDY6YB–. Illustrations of the British flora: a series of wood engravings, with dissections, of British plants. Botany; Botany. 960. Potamogeton obtusifolius.. S'fil. Potamogeton acutifolius.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Fitch, W. H. (Walter Hood), 1817-1892; Smith, Worthington George, 1835-1917; Bentham, George, 1800-1884. Handbook of the British flora. London, L. Reeve & Co.
RMW2R0EB–BB-0190 Potamogeton confervoides
RMRDYHY9–. An introduction to vegetable physiology. Plant physiology. 108 VEGETABLE PHYSIOLOGY the mode of formation is different. A mass of tissue lying in the position of the subsequent cavity does not keep pace in its development with the growth of the cells sur- rounding it, and consequently becomes ruptured, and the cells of which it is composed are gradually destroyed, leav- ing a cavity of some size. Instances of this mode of formation are afforded by the stems of Equisetum (fig. 77),. Fig. 76.—Section op Stem op Potamogeton, showing Air Passages in the Cortex. the haulms of grasses, and the hol
RMW2R0F3–BB-0191 Potamogeton crispus
RMRDY71C–. Illustrations of the British flora: a series of wood engravings, with dissections, of British plants. Botany; Botany. 9541' Potanidgeton heterophyllus. 955. Potamogeton lucens.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Fitch, W. H. (Walter Hood), 1817-1892; Smith, Worthington George, 1835-1917; Bentham, George, 1800-1884. Handbook of the British flora. London, L. Reeve & Co.
RMW2R0C2–BB-0179 Potamogeton alpinus
RMRDY71M–. Illustrations of the British flora: a series of wood engravings, with dissections, of British plants. Botany; Botany. 952. Euppia maritima.. 953. Potamogeton natans.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Fitch, W. H. (Walter Hood), 1817-1892; Smith, Worthington George, 1835-1917; Bentham, George, 1800-1884. Handbook of the British flora. London, L. Reeve & Co.
RMW2R0E3–BB-0204 Potamogeton filiformis
RMRDY6YK–. Illustrations of the British flora: a series of wood engravings, with dissections, of British plants. Botany; Botany. 958. Potamogeton crispiis. 959. PotamogetoD densus.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Fitch, W. H. (Walter Hood), 1817-1892; Smith, Worthington George, 1835-1917; Bentham, George, 1800-1884. Handbook of the British flora. London, L. Reeve & Co.
RMW2R0DW–BB-0182 Potamogeton heterophyllus
RMRDY6YG–. Illustrations of the British flora: a series of wood engravings, with dissections, of British plants. Botany; Botany. 234. 960. Potamogeton obtusifolius.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Fitch, W. H. (Walter Hood), 1817-1892; Smith, Worthington George, 1835-1917; Bentham, George, 1800-1884. Handbook of the British flora. London, L. Reeve & Co.
RMW2R0E2–BB-0194 Potamogeton foliosus
RMRE2968–. An introduction to vegetable physiology. Plant physiology. 36 VEGETABLE PHYSIOLOGY water in which it hves, the gas being dissolved therein. Aquatic plants also obtain their oxygen from this source, but many of them are composed of a large number of cells, most of which are situated at some distance from the exterior. In such plants large cavities or reservoirs are constructed, in which a quantity of air is slowly accumulated. Iha. 34.—Section of Stem or Potamogeton, showing Aik I'assages IN THE COETEX, and into which the respiratory products can be discharged. From such reservoirs the oxygen
RMW2R0E0–BB-0183 Potamogeton varians
RMRDY71G–. Illustrations of the British flora: a series of wood engravings, with dissections, of British plants. Botany; Botany. 953. Potamogeton natans.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Fitch, W. H. (Walter Hood), 1817-1892; Smith, Worthington George, 1835-1917; Bentham, George, 1800-1884. Handbook of the British flora. London, L. Reeve & Co.
RMW2R0DT–BB-0192 Potamogeton compressus
RMRE0NJ4–. Elementary botany. Botany. ZONAL DISTRIBUTIOiY OF PLANTS. 407 overhanging willows. On the left, pond-weeds (Potamogeton natans) and the yellow water lily, or spatter-dock (nuphar),. Fig. 500. Yellow water lily on jutting ann in stream. {Photograph by the author.) float their leaves and flowers on the quiet water, while the small yellow flowers of the mud plantain (Heteranthera graminifolia) glitter in the sunlight. The arrow-leaf (Sagittaria heterophylla,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration a
RMW2R0C7–BB-0175 Potamogeton oakesianus
RMRDWDG2–. Elementary botany. Botany. ZONAL DISTRIBUTION OF PLANTS. 407 overhanging willows. On the left, pond-weeds (Potamogeton natans) and the yellow water lily, or spatter-dock (nuphar),. Fig. 500. Yellow water lily ou jutting arm in stream. (Photograph by the author.) float their leaves and flowers on the quiet water, while the small yellow flowers of the mud plantain (Heteranthera graminifolia) glitter in the sunlight. The arrow-leaf (Sagittaria heterophylla,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration an
RMW2R0D2–BB-0208 Potamogeton robbinsii
RMRDWR03–. An introduction to the structure and reproduction of plants. Plant anatomy; Plants. 174 AfiRENCHYMA Other examples of adaptation to the habitat-conditions in aquatics are :—restriction of the stomata to the upper surface of floating leaves, development of a covering of wax on the. Fig. 91.—Transverse section of the vascular strand of the Floating Pond- weed [Potamogeton natans). C, xylem-canals ; E., endodermis ; I., air-canal; P., sieve-tube. latter, and the aerenchyma encountered in certain marsh-plants (e.g. Purple Loosestrife, Lyiliritm salicaria ; Gipsj'wort, Lycopus ciirofcetts; Hairy
RMW2R0F0–BB-0201 Potamogeton gemmiparus
RMRDWM22–. Illustrations of the British flora: a series of wood engravings, with dissections, of British plants. Botany; Botany. 962. Potamogeton perfoliatus, L. Perfoliate Pondwced.. 963. Potamogeton crispus, L. Curly Pojtdiveed.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Fitch, W. H. (Walter Hood), 1817-1892; Smith, George Worthington, 1835-1917; Bentham, George, 1800-1884. Handbook of the British flora. London, L. Reeve
RMW2R0DC–BB-0198 Potamogeton vaseyi
RMRDWM1Y–. Illustrations of the British flora: a series of wood engravings, with dissections, of British plants. Botany; Botany. II. Monocotyledons'] LXXVIII. NAIADES,. 241. 964. Potamogeton densus, L. Opposite Pondweed.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Fitch, W. H. (Walter Hood), 1817-1892; Smith, George Worthington, 1835-1917; Bentham, George, 1800-1884. Handbook of the British flora. London, L. Reeve
RMW2R0C8–BB-0205 Potamogeton interior
RMRDYHRB–. Morphology of angiosperms (Morphology of spermatophytes. Part II). Angiosperms; Plant morphology. 192 MORPHOLOGY OP ANGIOSPERMS it we would cite Sparganium (Campbell55), Potamogeton (Wiegand,63 Ilolferty71), Zannichellla and Naias (Camp- bell 41), Triglochin (Hill60), and Limnocharis (Hall 82). The last-mentioned form well illustrates that the general type may be maintained, and at the same time there may be no regularity in the sequence of divisions after the first two. In fact, the apical cell of the proernbryo of Limnocharis may divide by a transverse, oblique, or longitudinal wall, and i
RMW2R0EG–BB-0186 Potamogeton lucens
RMRDB725–. Fresh-water biology. Freshwater biology. Fig. 255. Potamogelon natans. One floating leaf and three submerged leaves, representing the thread-like form of the monocotyledonous type of sub- merged leaf. (After Gobel.) thread-like leaves are very common and may be the only kind occur- ring on the plant, as in Potamogeton pectinatus, or they may occur on the same plant together with floating leaves, as in Potamogeton natans (Fig. 255). It is to be noticed that most of the monocoty- ledons conform to some one of the types mentioned, while the dicotyledons seem to favor another habit, such as is s
RMW2R0EK–BB-0197 Potamogeton rutilus
RMRDYH96–. An introduction to vegetable physiology. Plant physiology. 330 VEGETABLE PHYSIOLOGY Some have, however, very short stems which give rise to numerous elongated ribbon-like leaves. These flexible stems depend for their support upon the nature of the medium in which they live, and though they possess a cer- tain rigidity, this is not associated with any great develop- ment of iwoody tissue. Generally the latter is reduced to a minimum ; the fibro-vascular bundles are usually few and. Fig. 139.—Section op Stem of Potamogeton, showing Aib Passages in the Cortex. contain few lignified elements. Th
RMW2R0CF–BB-0181 Potamogeton faxoni
RMRDB728–. Fresh-water biology. Freshwater biology. l82 FRESH-WATER BIOLOGY. Fig. 255. Potamogelon natans. One floating leaf and three submerged leaves, representing the thread-like form of the monocotyledonous type of sub- merged leaf. (After Gobel.) thread-like leaves are very common and may be the only kind occur- ring on the plant, as in Potamogeton pectinatus, or they may occur on the same plant together with floating leaves, as in Potamogeton natans (Fig. 255). It is to be noticed that most of the monocoty- ledons conform to some one of the types mentioned, while the dicotyledons seem to favor an
RMW2R0BF–BB-0184 Potamogeton illinoensis
RMRDB71R–. Fresh-water biology. Freshwater biology. THE LARGER AQUATIC VEGETATION 183 nature seem to be able to bring forth either floating or submerged leaves or both as the conditions imposed seem to require. If grow- ing shoots of Ranunculus aquatilis are not allowed to reach the surface of the water only the segmented leaves develop. If speci- mens of Potamogeton heterophylhis are suddenly left stranded by receding water thp floating leaves may persist and be succeeded by more floating leaves, thus enabling the plant to live for a considerable time, often persisting until the rising water returns.
RMW2R0EF–BB-0196 Potamogeton friesii
RMRDX0EB–. A general system of botany, descriptive and analytical. In two parts. Part I. Outlines of organography, anatomy, and physiology. Part II. Descriptions and illustrations of the orders. By Emm. Le Maout [and] J. Decaisne. With 5500 figures by L. Steinheil and A. Riocreux. Translated from the original by Mrs. Hooker. The orders arranged after the method followed in the universities and schools of Great Britain, its colonies, America, and India; with additions, an appendix on the natural method, and a synopsis of the orders, by J.D. Hooker. Botany. XXI. APONOGETE^. 805. Potamogeton crUpus. Toung
RMW2R0DM–BB-0189 Potamogeton mysticus
RMRDWM24–. Illustrations of the British flora: a series of wood engravings, with dissections, of British plants. Botany; Botany. 960. Potamogeton lucens, L. 961. Polamogetonprcelongus, Wulf. Shining Pmdweed. Zo„g Pondmeed.. 962. Potamogeton perfoliatus, L. Perfoliate Pondwced.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Fitch, W. H. (Walter Hood), 1817-1892; Smith, George Worthington, 1835-1917; Bentham, George, 1800-1884. Hand
RMW2R0C9–BB-0199 Potamogeton lateralis
RMRDKCBW–. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. angled face; embryo with the apex pointing slightly inside of the base. In Mystic Pond, Medford, Mass. Also in Europe. Summer. Apparently a mere form of the preceding, or perhaps a hybrid between P. angustifolius and P. heterophyllus. ii. Potamogeton illinoensis Morong. Illinois Pondweed. Fig. 184. Potamogeton illinoensis Morong, Coult. Bot. Gaz. 5: 50. 1880. S
RMW2R0ED–BB-0202 Potamogeton diversifolius
RMRDKCA3–. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. Potamogeton compressus L. Sp. PI. 127. 1753. Potamogeton sosteraefolius Schum. Enum. PI. Saell. 50. 1801. Stems much flattened, sometimes winged, widely branching. Leaves linear, obtuse and mucronate or short-pointed at the apex, 2'-i2' long, i"-a" wide, with 3 principal nerves and many fine ones; stipules scarious, obtuse, finely nerved, soon perishi
RMW2R0F1–BB-0180 Potamogeton americanus
RMRDKCC3–. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. Genus i. PONDWEED FAMILY. 79. angled face; embryo with the apex pointing slightly inside of the base. In Mystic Pond, Medford, Mass. Also in Europe. Summer. Apparently a mere form of the preceding, or perhaps a hybrid between P. angustifolius and P. heterophyllus. ii. Potamogeton illinoensis Morong. Illinois Pondweed. Fig. 184. Potamogeton illinoensis Morong, C
RMW2R0DE–BB-0206 Potamogeton pectinatus
RMRDJHAM–. The elements of botany embracing organography, histology, vegetable physiology, systematic botany and economic botany ... together with a complete glossary of botanical terms. Botany. adnata (Fig. 73, stip). The stipules of the Tulip-tree serve as bud-^scales, falling ofT soon after the leaves unfold. 44. In the Dock and the Buckwheat family the stipules unite and form a sheath around the stem (Fig. 82), which is called Ochrea. If the outer margins only unite, as in the Buttonwood, a double stipule opposite the leaf is formed. If the inner margin only unite, as in the Pondweed (Potamogeton),
RMW2R0ER–BB-0185 Potamogeton angustifolius
RMRDD7WE–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 324 USTILAGINEAE. to be preceded by a considerable resting-period, during which germination will not take place. D. Martianoffiana (Thiim.). In leaves of Potamogeton natans and P. gramineas. D. occulta (Hoffm.). In fruits of species of Potamogeton. D. intermedia (Setch.). An American species found on leaves of Sagittaria variabilis. D. comari (Berk.). In leaves of Comarum palustre in Britain. D. limosellae (Kunze.).
RMW2R0CY–BB-0188 Potamogeton perfoliatus
RMRDKC9F–. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. July-Aug. 22. Potamogeton obtusifolius Mert. & Koch. Blunt-leaved Pondweed. Fig. 195. Potamogeton compressus Wahl. Fl. Suec. i: 107. 1824. Not L. 1753. Potamogeton obtusifolius Mert. & Koch, Deutsch. Fl. 1: 855. 1823. Stems usually slender, compressed, widely branch- ing, especially above. Leaves linear, 2'-$' long, ¥'-2" wide, obtuse, often mucron
RMW2R0ET–BB-0177 Potamogeton pulcher
RMRE3EWF–. Goldfish varieties and tropical aquarium fishes; a complete guide to aquaria and related subjects. Aquariums; Goldfish. TROPICAL AQUARIUM FISHES 179. Fig. 127. Potamogeton densus (Reduced one-half) Fig. 128. Nitella gracilis (Reduced one-third) POTAMOGETON In strong contrast to the foregoing dainty plants is Potamogeton densus, or pondweed. As will be seen from figure 127, these leaves are broad and robust. In color they are a bright green. This variety is said to be of European origin but is now common in ponds in the United States. If established in soil in flat pots it flourishes in a wel
RMW2R0F2–BB-0203 Potamogeton dimorphus
RMRDKC7E–. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. 29. Potamogeton diversifolius Raf. Rafinesque's Pondweed. Fig. 202. Potamogeton hybridus Michx. Fl. Bor. Am. i: 101. 1803. Not Thuill. 1790. Potamogeton diversifolius Raf. Med. Rep. (II.) 5: 354. 1808. Potamogeton diversifolius multidenticulatus Mo- rong, Mem. Torr. Club, 3: Part 2, 48. 1893. Potamogeton diversifolius trichophyllus Morong, Mem. Torr. Club, 3: p
RMRDM8J5–. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. 2. Potamogeton Oakesianus Robbins. Oakes' Pondweed. Fig. 175. Potamogeton Oakesianus Robbins in A. Gray, Man. Ed. s, 48S. 1867. Stems very slender, often much branched from below. Floating leaves elliptic, mostly obtuse, rounded or slightly subcordate at the base, 1/-2' long, s"-9" wide, 12-20-nerved; petioles 2'-6' long; submerged leaves mere capilla
RMRDGXR6–. The natural history of the farm : a guide to the practical study of the sources of our living in wild nature . Natural history. Fig. 13. Leaf-form in three common sub- surrounding the stem at the nodes: a, the common water-weed (Elodea canadensis or Philotria canadensis); b, the water horn- wort (Ceratophyllum demersum); c, the water milfoil (Myrio- phyllum).. Fig. 14. Outlines of four common kinds of floating leaves: a, the floating river- weed (Potamogeton naians); b, the spatter-dock (Nymphaa advena); c, the white water- lily (Castaillia odorata); d, the water shield {Brasenia peltata)..
RMRDKC9P–. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. ZANNICHELLIACEAE. Vol. I.. 20. Potamogeton Hillii Morong. Hill's Pond- weed. Fig. 193. Potamogeton Hillii Morong, Coult. Bot. Gaz. 6: 290. 1881. Stems slightly compressed, slender, widely branching, l°-2° long. Leaves linear, acute or cuspidate, or often almost aristate, i'-2l' long, i"-ii" wide, 3-nerved, the lateral nerves delicate and nearer the ma
Download Confirmation
Please complete the form below. The information provided will be included in your download confirmation