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308a. Coreopsis Linnaeus sect. Tuckermannia (Nuttall) S. F. Blake, Proc. Amer. Acad. Arts. 49: 340. 1913.
Tuckermannia Nuttall, Trans. Amer. Philos. Soc., n. s. 7: 363. 1841
Perennials, subshrubs, or shrubs (often ± fleshy). Leaves cauline; alternate; blades (1–)2–3-pinnately lobed. Calyculi of 4–12 bractlets. Phyllaries 8–14+. Paleae lanceolate to linear-oblong. Ray florets 11–21+, pistillate, fertile; laminae yellow, ± elliptic to oblong, each broadest at or near middle, apices entire or 2–3-toothed. Disc florets 80–150+; corollas yellow, lobes 5; style-branch apices ± truncate. Cypselae ± oblong, wings chartaceous to membranous, entire, not ciliolate, faces glabrous, smooth; pappi 0, or (1–)2 cusps 0.1–0.2+ mm (shoulders of wings sometimes bristly).
Species 2 (2 in the flora): coastal California, adjacent islands; nw Mexico (including Guadalupe Island).
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Subshrubs or shrubs, (10–)30–250+ cm; heads (1–)8–12+ per stem; peduncles 4–12(–18+) cm; ray florets 8–13+ |
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1 Coreopsis gigantea |
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Perennials, 1–4(–8) dm; heads 1–2(–4+) per stem; peduncles (8–)15–30+ cm; ray florets 16–21+ |
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2 Coreopsis maritima |
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Lower Taxa
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