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Brazilian cat's ear, Tweedy's 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).

Heads

1–10, in loose, paniculiform to corymbiform arrays.

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).

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

Phenology Flowering Apr.
Habitat Waste areas with sandy soil, roadsides, lawns
Elevation 0–100 m [0–300 ft]
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.)

Distribution
from FNA
AL; FL; GA; LA; MS; NC; SC; TX; South America [Introduced in North America]
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[BONAP county map]
Parent taxa Asteraceae > tribe Cichorieae > Hypochaeris
Sibling taxa
H. glabra, H. microcephala, H. radicata
Synonyms Apargia chillensis, Achyrophorus chillensis, H. brasiliensis, Porcellites brasiliensis
Name authority (Kunth) Britton: Bull. Torrey Bot. Club 19: 371. (1892)
Source Flora of North America vol. 19, p. 298.
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