Flora of North America species comparison

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Carrichtera annua

wards weed
Stems

branched basally and distally, (0.5–)0.7–3.6(–4.5) dm.
Basal leaves

petiole 1–4.5 cm;

blade 3–6 lobes each side, 1.5–4 cm, terminal lobe linear to oblong, 0.3–1.5 cm × 0.5–1.5 mm, margins entire.
Cauline leaves

similar to basal.
Flowers

sepals 4–5 mm;

petals 6.5–8 × 1–2 mm;

median filaments 3.5–4 mm;

anthers 0.5–0.8 mm.
Fruiting pedicels

2.5–4 mm.
Fruits

reflexed;

proximal segment broadly ovoid to subglobose, 3–4 × 2.5–3.5 mm;

terminal segment cochleariform or ovate, 3–5 × 3–4 mm (margin incurved).
Seeds

1.1–1.6 mm diam. 2n = 16.

Carrichtera annua
Phenology Flowering Apr–May.
Habitat Deserts
Elevation ca. 50 m (ca. 200 ft)
Distribution
from FNA
CA; sw Europe; sw Asia; n Africa [Introduced in North America; introduced also in Australia]
[BONAP county map]
Discussion

Carrichtera annua was found as a naturalized weed in southern California in 2007.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 7, p. 429.
Parent taxa Brassicaceae > tribe Brassiceae > Carrichtera
Synonyms Vella annua
Name authority (Linnaeus) de Candolle: Mém. Mus. Hist. Nat. 7: 250. (1821)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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