Hypochaeris chillensis |
Hypochaeris radicata |
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Brazilian cat's ear, Tweedy's cat's ear |
false dandelion, hairy cat's-ear, rough cat's-ear |
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Habit | Biennials or perennials, 30–70 cm; taproots vertical, deep, thick, caudices stout. | Perennials, 10–60 cm; taproots vertical, thick, fibrous, caudices woody. |
Stems | (1–5) erect or ascending, simple or sparingly branched distally, glabrous or pilose proximally. |
(1–15) erect, usually branched (2–3 times at midstem and distally, sparsely bracteate or naked), glabrous or coarsely hirsute 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). |
all basal; blades oblanceolate, lyrate to slightly runcinate, 50-–350 × 5–30 mm, margins coarsely dentate to pinnatifid, faces ± hirsute (hairs coarse, spreading). |
Involucres | broadly campanulate, 10–20 × 5–20 mm. |
cylindric or campanulate, 10–25 × 10–20 mm. |
Florets | 50–100+; corollas yellow, 5–7 mm, equaling phyllaries at flowering. |
10–15 mm, surpassing phyllaries at flowering; corollas bright yellow or grayish green. |
Phyllaries | 20–30, linear-lanceolate, 4–15 mm, unequal, ± hirsute (at least medially). |
20–30, narrowly lanceolate, 3–20 mm, unequal, margins scarious, green to darkened, faces glabrous or sparsely hirsute medially. |
Heads | 1–10, in loose, paniculiform to corymbiform arrays. |
usually 2–7 in loose arrays, sometimes borne singly. |
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. |
monomorphic, all beaked, beaks 3–5 mm; bodies golden brown, fusiform, 6–10 mm, ribs 10–12, muricate; pappi of whitish bristles in 2 series, outer barbellate, shorter than plumose inner, longest 10–12 mm. |
2n | = 8, 10. |
= 8. |
Hypochaeris chillensis |
Hypochaeris radicata |
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Phenology | Flowering Apr. | Flowering Apr–Nov. |
Habitat | Waste areas with sandy soil, roadsides, lawns | Oak-pine forest, coastal prairie, dunes, waste ground, dry fields, roadside ditches, railroads, lawns |
Elevation | 0–100 m (0–300 ft) | 0–1600 m (0–5200 ft) |
Distribution |
AL; FL; GA; LA; MS; NC; SC; TX; South America [Introduced in North America]
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AK; AL; AR; CA; CO; CT; DE; FL; GA; ID; IL; IN; KY; LA; MA; MD; ME; MI; MO; MS; MT; NC; NH; NJ; NV; NY; OH; OR; PA; RI; SC; TN; TX; UT; VA; VT; WA; WI; WV; BC; LB; Europe; Asia [Introduced in North America]
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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.) |
Hypochaeris radicata is recognized by the coarse, perennial habit, stout roots, coarsely hirsute leaves and phyllaries, yellow corollas, and monomorphic, beaked cypselae. It is weedy and invasive in some areas. (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 | ||
Synonyms | Apargia chillensis, Achyrophorus chillensis, H. brasiliensis, Porcellites brasiliensis | |
Name authority | (Kunth) Britton: Bull. Torrey Bot. Club 19: 371. (1892) | Linnaeus: Sp. Pl. 2: 811. (1753) |
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