Coronopus didymus (L.) Smith
Brassicaceae (Mustard Family)
Naturalized from Europe
Wart-Cress
Lesser Wart-Cress
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Coronopus didymus (L.) SmithBrassicaceae (Mustard Family)Naturalized from Europe
Wart-CressLesser Wart-Cress
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March Photo
Plant Characteristics:
Strong smelling annual or biennial, stems 1.5-2 dm. long, leafy, somewhat
hairy; leaves pinnately parted, 1-2 cm. long, with narrow divisions; pedicels
2-3 mm. long; fls. minute, greenish-white, less than 1 mm. long, the capitate
clusters elongating in fruit; silicles flattened contrary to the narrow
partition, the two valves strongly wrinkled or tubercled, 1-seeded, notched, 1
mm. long, 2 mm. wide, rough-wrinkled.
Habitat:
Occasional weed in cismontane areas; to Atlantic Coast, below 2000 m.
March-July.
Name:
Greek, korone, crown, and pous,
foot, from the deeply cleft leaves. (Munz,
Flora So. Calif. 285). Greek,
didymos, double.
(Jaeger 81). Possibly refers to the 2 valves of the silicles.
The 1993 Jepson Manual defines Coronopus
as crow foot as opposed to the Munz crown foot.
General:
Occasional in the study area. Photographed
specimens from the intersection of Back Bay Dr. and Eastbluff Dr., Big Canyon
and the area west of the Delhi Ditch. (my
comments). Wart
cress was introduced from South America. Frequently
found established about habitations and troublesome in gardens and nurseries.
(Robbins et al. 223).
Origin of the plant seems in doubt or at least there is a conflict
between Munz who says the origin of the plant is Europe and Robbins. The 1993
Jepson Manual indicates that Eurasia is the place of origin. (my comments). About 6 species of
wide distribution. (Munz, Flora
So. Calif. 285).
Text Ref:
Hickman, Ed. 413; Munz, Flora So. Calif. 285; Roberts 15.
Photo Ref:
Mar 4 85 # 19; April-May 85 # 10; Mar-April 88 # 11A,13A; May-July 95 #
1A..
Identity: by R. De Ruff, confirmed by F. Roberts.
First Found: March 1985.
Computer Ref: Plant Data 89
Have plant specimen.
Last edit 6/6/05
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May Photo April Photo