Nicolletia

A. Gray

in J. C. Frémont, Rep. Exped. Rocky Mts., 315. 1845.

Etymology: For Jean Nicholas Nicollet, 1786–1843, “…who spent several years in exploring the country watered by the Mississippi and Missouri rivers, and who was employed by the United States Government in a survey of the region….” Quoted from protologue.
Treatment appears in FNA Volume 21. Treatment on page 231. Mentioned on page 222.

Annuals or perennials, (5–)10–50 cm, often glaucous. Stems erect or spreading, branched from bases or throughout. Leaves cauline; mostly alternate (1–4 proximal pairs opposite); blades mostly 1-pinnately lobed (lobes usually 3–11, bristle-tipped), ultimate margins entire, faces glabrous (often glaucous, oil-glands subterminal). Heads radiate, borne singly. Calyculi of 2–6 deltate to lanceolate bractlets (each usually bearing 1–5 oval to linear oil-glands). Involucres campanulate to turbinate or fusiform, 4–8(–10) mm diam. Phyllaries persistent, 6–12 in ± 2 series (distinct to bases, lanceolate or ovate to linear, most bearing 1–5 oil-glands). Receptacles convex to conic, ± pitted, epaleate. Ray florets 7–12, pistillate, fertile; corollas whitish with pinkish to purplish stripes. Disc florets 15–100+, bisexual, fertile; corollas yellow or purplish or whitish, tubes much shorter than cylindric throats, lobes 5, deltate to lanceolate. Cypselae clavate, sparsely puberulent (hairs usually reddish); pappi persistent, of 5(–6) fascicles of 7–15 barbellate bristles subtending and alternating with 5(–6) lanceolate, 1-aristate scales. x = 10.

Distribution

sw United States, n Mexico.

Discussion

Species 3 (2 in the flora).

Nicolletia trifida Rydberg is known from Baja California and Baja California Sur, Mexico.

Key

1 Leaf lobes 5–11, rachis widths mostly 2–3 times lobe widths; ray laminae 4–8 mm; disc florets (30–)60–100+ Nicolletia occidentalis
1 Leaf lobes mostly 3–5, rachis widths hardly greater than lobe widths; ray laminae 7–16 mm; disc florets 15–25(–50) Nicolletia edwardsii
... more about "Nicolletia"
John L. Strother +
A. Gray +
sw United States +  and n Mexico. +
For Jean Nicholas Nicollet, 1786–1843, “…who spent several years in exploring the country watered by the Mississippi and Missouri rivers, and who was employed by the United States Government in a survey of the region….” Quoted from protologue. +
in J. C. Frémont, Rep. Exped. Rocky Mts., +
strother1978a +
Undefined (tribe Undefined) subtribe Tageteae +
Nicolletia +
Asteraceae (tribe Heliantheae) subtribe Pectidinae +