Camelina alyssum |
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Habit | Annuals or biennials. |
Stems | unbranched or branched distally, 2–7(–10) dm, glabrous or pubescent basally, trichomes branched, minute. |
Basal leaves | often withered by anthesis. |
Cauline leaves | blade lanceolate, narrowly oblong, or linear-lanceolate, pinnatifid or sinuate-dentate, (1.5–)2.5–7(–10) cm × 2–10(–20) mm, base sagittate or strongly auriculate, margins usually coarsely dentate to lobed, rarely entire, apex acute, surfaces glabrescent or sparsely pubescent, trichomes primarily forked. |
Flowers | sepals 2–4.2 × 0.7–1.5 mm; petals pale yellow, (3.5–)4–6.5 × 1.5–2 mm; filaments 2–3.5 mm; anthers ca. 0.5 mm. |
Fruiting pedicels | ascending to divaricate, 15–30(–40) mm. |
Fruits | depressed globose, 7–11 × (5.5–)6.5–8(–9) mm (almost as long as wide, or longer), apex subtruncate or, rarely, rounded; valves each with prominent midvein, margin obscurely or narrowly winged; style 1.2–2.5 mm. |
Seeds | reddish or yellowish brown, (1.8–)2–3 × 0.7–1 mm. |
2n | = 40. |
Camelina alyssum |
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Phenology | Flowering May–June. |
Habitat | Fields, roadsides, prairies |
Distribution |
CA; CO; MT; ND; SD; WY; AB; MB; SK; Europe [Introduced in North America; introduced also in Australia] |
Discussion | As indicated by R. L. McGregor (1985), Camelina alyssum is known from the above states only from old collections, and, apparently, the species has not been collected again during the past five decades. Although we have not examined all of his cited specimens, those on which the Missouri and Nebraska records are based belong to C. sativa. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 7, p. 453. |
Parent taxa | |
Sibling taxa | |
Synonyms | Myagrum alyssum |
Name authority | (Miller) Thellung: Index Seminum (Zürich) 1906: 10. (1906) |
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