Brickellia coulteri
Brickellia knappiana
Coulter's brickellbush
Knapp brickellbush, Knapp's brickellia
much branched from bases, pubescent, often gland-dotted.
(arching) branched from near bases, gland-dotted.
opposite;
petioles 4–12 mm;
blades 3-nerved from bases, broadly ovate to deltate, 10–60 × 10–30 mm, bases truncate, hastate, or subcordate, margins usually toothed (1–3 sets of sharp teeth near bases), rarely subentire, apices attenuate, faces minutely pubescent.
alternate;
petioles 4–5 mm;
blades 3-nerved from bases, lance-ovate to lanceolate, 10–35 × 1–16 mm, bases acute to attenuate, margins dentate to serrate, apices acute to acuminate, faces densely gland-dotted and sparsely pubescent (not shiny).
5–40 mm, pubescent and sometimes gland-dotted.
2–5 mm, densely glandular-pubescent.
cylindric to campanulate, 8–12 mm.
cylindric to narrowly campanulate, 6–9 mm.
13–25;
corollas pale yellow-green, often purple-tinged, 7–8.2 mm.
5–7;
corollas white, 5–6.5 mm.
17–22 in 4–6 series, greenish, often purple-tinged, 4–5-striate, unequal, margins scarious (apices acute to acuminate or mucronate, minutely pubescent);
outer lance-ovate to narrowly lanceolate (glabrous or sparsely pubescent), inner narrowly lanceolate to linear (glabrous).
18–22 in 5–7 series, greenish, 3–4-striate, unequal, margins scarious (apices acute to acuminate);
outer lance-ovate (sparsely puberulent, gland-dotted), inner lanceolate (glabrous).
in loose, paniculiform arrays.
in paniculiform arrays.
3–5 mm, hispidulous, strigose, or glandular-pubescent;
pappi of 28–40 smooth or barbellulate bristles.
2.5–3, puberulent to sparsely pubescent;
pappi of 28–32 white, barbellulate bristles.
Brickellia coulteri
Brickellia knappiana
Varieties 3 (2 in the flora}.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Of conservation concern.
Brickellia knappiana is found only in the mountains of eastern California. It is noted as a possible hybrid between B. californica and B. multiflora. Collections from mixed populations of B. knappiana and B. californica have been noted on herbarium specimens.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Midstem leaf blades mostly 40–60 mm; peduncles mostly 15–40 mm, mostly glandular-pubescent | var. coulteri |
1. Midstem leaf blades mostly 20–40(–50) mm; peduncles 5–25 mm, pubescent, mostly lacking glandular hairs | var. brachiata |
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USDA Plants Database
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