Brickellia coulteri
Brickellia coulteri var. brachiata
Coulter's brickellbush
much branched from bases, pubescent, often 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.
blades 10–40(–50) × 10–20 mm, midstem blades mostly 20–40(–50) mm.
5–40 mm, pubescent and sometimes gland-dotted.
5–25 mm, pubescent, mostly lacking glandular hairs.
cylindric to campanulate, 8–12 mm.
13–25;
corollas pale yellow-green, often purple-tinged, 7–8.2 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).
in loose, paniculiform arrays.
3–5 mm, hispidulous, strigose, or glandular-pubescent;
pappi of 28–40 smooth or barbellulate bristles.
= 18.
Brickellia coulteri
Brickellia coulteri var. brachiata
Varieties 3 (2 in the flora}.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Variety brachiata includes most specimens from Arizona, except those from lower side canyons of the Grand Canyon. Those plants are strongly gland-dotted and often have larger leaves characteristic of the type variety. Some plants from southeastern Arizona are not clearly differentiated.
(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 |
WildflowerSearch
iNaturalist
USDA Plants Database
