Difference between revisions of "Coreopsis nuecensis"
Contr. Herb. Franklin Marshall Coll. 1: 106. 1895.
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Coreopsidinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Coreopsidinae | ||
Latest revision as of 20:12, 5 November 2020
Annuals, 10–30(–50+) cm. Aerial nodes proximal to first peduncle usually 1–3(–5), distalmost 1–3 internodes 2–4(–9+) cm. Leaves: basal and cauline on proximal 1/5–1/3(–1/2) of plant heights; petioles 1–8+ cm; blades simple or 1(–2)-pinnately lobed, simple blades or terminal lobes ± elliptic to lanceolate, 10–30 × 5–15 mm. Peduncles (5–)10–25+ cm. Calyculi of ± deltate to lance-oblong bractlets 4–6(–8) mm. Phyllaries lance-oblong, 6–8(–10+) mm. Ray laminae yellow, usually each with (2–)4–8+ proximal, red-brown or purple flecks, 12–18+ mm. Disc corollas 2.5–3.2 mm, apices yellow. Cypselae 2.5–4 mm, wings spreading, ± chartaceous, entire. 2n = 12, 14, 18, 20.
Phenology: Flowering Mar–May.
Habitat: Sandy soils in post-oak and oak-mesquite woodlands
Elevation: 10–200+ m
Discussion
Coreopsis nuecensis is probably in Mexico (Tamaulipas) and was collected once in Florida (“Escaped from cultivation”). Plants with glabrous phyllaries and chromosome numbers of 2n = 18 and 20 and included here in C. nuecensis have been called C. nuecensoides.
Selected References
None.