Coreopsis pubescens
Coreopsis delphiniifolia
hairy coreopsis, hairy tickseed, star tickseed
larkspurleaf tickseed
mostly cauline on proximal 2/3–7/8 of plant heights;
petioles 2–10(–25+) mm;
blades usually simple, rarely with 1–2(–3+) lateral lobes, simple blades or terminal lobes lance-elliptic to oblanceolate or lanceolate, 15–60(–80) × 2–25(–35) mm.
petioles 0–1 mm;
blades simple or 3-foliolate, simple blades or leaflets usually narrowly lanceolate to lance-linear, 35–80 × 2–5(–7) mm (seldom lobed, sometimes parted into 2–3+ lance-linear to ± linear lobes).
(7–)12–15+ cm.
15–45+ mm.
yellow, 12–15+ mm.
15–25(–30) mm.
4.6–5.4 mm, apices yellow.
25–60+;
corollas yellow (often drying blackish), 5–6 mm.
lance-ovate to lanceolate, 5–8+ mm.
8, oblong-ovate, 5–6+ mm.
of lanceolate to lance-linear bractlets 3–7 mm.
of 8–10 linear bractlets 3–5(–7) mm.
2.5–3 mm, wings ± spreading, ± chartaceous, entire.
oblong, 4.5–6 mm.
nodes proximal to first peduncle usually (5–)6–12+, distalmost 1–3 internodes 4–6(–10+) cm.
(± mid stem) 3–8 cm.
= 26 (+ 0–2B).
= 52, 78, 104.
Coreopsis pubescens
Coreopsis delphiniifolia
Bushy to wiry, nearly glabrous plants with leaf blades mostly simple, mostly oblanceolate, and 2–15+ mm wide and with relatively small heads, florets, and fruits from coastal Mississippi and included here in Coreopsis pubescens may merit recognition as C. debilis Sherff or C. pubescens var. debilis.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Plants treated here as Coreopsis delphiniifolia are questionably distinct from C. major. In 1976, E. B. Smith suggested that members of the taxon he called C. ×delphiniifolia may be hybrids or progeny of hybrids involving C. verticillata and C. tripteris and, possibly, C. major. A problem with such an interpretation is that although all of the 35 or so records for C. delphiniifolia in the sense of Smith map at or near known localities for C. major, all but 2 are from well south of the known distribution of C. verticillata and only 3 are from near known localities for C. tripteris.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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