Hypochaeris chillensis |
Hypochaeris microcephala |
|
---|---|---|
Brazilian cat's ear, Tweedy's cat's ear |
smallhead cat's ear |
|
Habit | Biennials or perennials, 30–70 cm; taproots vertical, deep, thick, caudices stout. | |
Stems | (1–5) erect or ascending, simple or sparingly branched distally, glabrous or pilose proximally. |
|
Leaves | basal and proximally cauline; basal blades elliptic to oblanceolate, 60–200 × 10–50 mm, margins coarsely and sharply dentate or 2-dentate, ciliate, faces glabrous or coarsely hirsute (cauline sessile, blades lanceolate, 50–100 × 10–30 mm, margins sharply dentate or pinnatifid; distal reduced, entire). |
|
Involucres | broadly campanulate, 10–20 × 5–20 mm. |
|
Florets | 50–100+; corollas yellow, 5–7 mm, equaling phyllaries at flowering. |
|
Phyllaries | 20–30, linear-lanceolate, 4–15 mm, unequal, ± hirsute (at least medially). |
|
Heads | 1–10, in loose, paniculiform to corymbiform arrays. |
|
Cypselae | monomorphic, all beaked; bodies golden brown, fusiform, 8–10 mm, muricate, ribs 4–5; pappi of white, plumose bristles in 1 series, 6–8 mm. |
|
2n | = 8, 10. |
|
Hypochaeris chillensis |
Hypochaeris microcephala |
|
Phenology | Flowering Apr. | |
Habitat | Waste areas with sandy soil, roadsides, lawns | |
Elevation | 0–100 m (0–300 ft) | |
Distribution |
AL; FL; GA; LA; MS; NC; SC; TX; South America [Introduced in North America]
|
LA; OK; TX; South America
|
Discussion | Hypochaeris chillensis is recognized by the sharply dentate or pinnatifid cauline leaves, yellow corollas, and monomorphic, beaked cypselae. Plants in the flora area differ from those found elsewhere mainly in having the outer phyllaries somewhat more hirsute medially. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 2 (1 in the flora). Hypochaeris microcephala is distinguished by the perennial habit, presence of cauline leaves, relatively small heads, and white corollas. It is most similar to H. chillensis; it usually has smaller heads with fewer florets and glabrous phyllaries. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 19, p. 298. | FNA vol. 19, p. 299. |
Parent taxa | Asteraceae > tribe Cichorieae > Hypochaeris | Asteraceae > tribe Cichorieae > Hypochaeris |
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | Apargia chillensis, Achyrophorus chillensis, H. brasiliensis, Porcellites brasiliensis | Achyrophorus microcephalus |
Name authority | (Kunth) Britton: Bull. Torrey Bot. Club 19: 371. (1892) | (Schultz-Bipontinus) Cabrera: Notas Mus. La Plata, Bot. 2: 200. (1937) |
Web links |