Volume IV (1988) - Flora of New Zealand Naturalised Pteridophytes, Gymnosperms, Dicotyledons
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Hypochaeris L.

HYPOCHOERIS L.

Annual to perennial taprooted rosette herbs. Hairs simple, eglandular, or 0. Stems usually branching, sometimes scapose. Lvs usually all basal, simple, toothed to pinnatifid; cauline lvs usually reduced to small narrowly triangular bracts, sometimes similar to basal and amplexicaul. Capitula solitary or several per stem, on long peduncles. Involucral bracts in 1-several indistinct series, glabrous or with a few hairs; outer bracts < inner. Receptacle areolate, with long scarious scales, glabrous. Corolla ligulate, yellow, often with pink or green stripe on outer face. Style branches filiform, yellow. Achenes numerous, brownish, obconic to fusiform, ribbed, scabrid, either all beaked or the inner beaked and the outer not beaked; pappus rarely of scales, usually of bristles in (1)-2 rows, sordid or white; the outer bristles short, scabrid to plumose, rarely 0; the inner bristles longer, usually plumose.

Key

1
Cauline lvs numerous, amplexicaul, coarsely toothed; outer involucral bracts covered with pale coarse hairs; pappus hairs in 1 row, all plumose
Cauline lvs usually 0, if present then tapered to base, shallowly toothed; involucral bracts glabrous or with a row of hairs on midrib; pappus hairs in 2 rows, the outer scabrid to plumose, the inner plumose
2
2
Lvs glabrous to sparsely hairy; florets c. = involucral bracts; involucral bracts linear-oblong with subacute apex, erect, always glabrous, the inner bracts with broad scarious margins
Lvs with moderately dense setulose hairs; florets c. 11/2× length of involucral bracts; involucral bracts linear-lanceolate with narrowly acute apex, suberect, with some dark hairs on midrib near apex, and usually some pale hairs on midrib near base, the inner bracts herbaceous or with narrow scarious margins

100 spp., cosmopolitan, especially S. America. Naturalised spp. 3.

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