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308c. Coreopsis Linnaeus sect. Leptosyne (de Candolle) O. Hoffmann in H. G. A. Engler and K. Prantl, Nat. Pflanzenfam. 54[IV,5]: 243. 1891.
Leptosyne de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 531. 1836
Annuals. Leaves mostly basal, seldom cauline; mostly alternate, sometimes opposite; blades simple or 1–2-pinnately lobed. Calyculi of (3–)5–8 bractlets. Phyllaries 5–8. Ray florets (5–)8(–12+), pistillate, fertile; laminae yellow, ± obovate or flabellate, each broadest distal to middle, apices entire or 2–3-toothed. Disc florets 8–60(–100+); corollas yellow (to orange), lobes 5; style-branch apices ± truncate or deltoid. Paleae oblong or lanceolate to linear. Cypselae ± oblong to spatulate, wings ± corky to chartaceous, entire, ± spreading, not ciliolate, faces smooth or ± tuberculate; pappi 0 or coroniform (0.1–0.2 mm). x = 12.
Species 3 (3 in the flora): California, nw Mexico.
The name Coreopsis sect. Leptosyne has been misattributed to S. F. Blake, Proc. Amer. Acad. Arts 49: 341. 1913.
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| 1 |
Leaf blades simple or 1(–2)-pinnately lobed, terminal lobes spatulate to narrowly oblan-ceolate, 1–3 mm wide; calyculus bractlets ciliolate near bases |
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6 Coreopsis stillmanii |
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Leaf blades simple or pinnately lobed, terminal lobes filiform to linear, 0.5–1(–1.5) mm wide; calyculus bractlets not ciliolate |
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(2) |
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| 2 (1) |
Cypselae marked adaxially with red dots or dashes near wing/body interface, wings ± corky-thickened, faces ± tuberculate and/or hirtellous |
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7 Coreopsis californica |
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Cypselae not marked adaxially with red, wings usually thin, sometimes corky-thick-ened, faces usually smooth, rarely tuberculate, not hirtellous |
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8 Coreopsis douglasii |
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Lower Taxa
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