Brickellia coulteri
Brickellia eupatorioides
Coulter's brickellbush
false boneset
much branched from bases, pubescent, often gland-dotted.
branched, pubescent.
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.
mostly opposite (alternate in vars. gracillima and texana);
petioles 0–10 mm;
blades 1- or 3-nerved from bases, lanceolate, lance-linear, lance-ovate, lance-rhombic, linear, or oblong, 25–100 × 0.5–40 mm, bases acute, margins entire or ± dentate (often revolute), apices obtuse to acuminate, faces glandular-pubescent.
5–40 mm, pubescent and sometimes gland-dotted.
5–100 mm, glandular-pubescent.
cylindric to campanulate, 8–12 mm.
cylindric to narrowly campanulate, 7–15 mm.
13–25;
corollas pale yellow-green, often purple-tinged, 7–8.2 mm.
6–35;
corollas pale yellow, yellow-green, pinkish lavender, or maroon, 4.5–6 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).
22–26 in 4–6 series, green to stramineous, sometimes purple-tinged, 3–7-striate, unequal, margins scarious (often ciliate);
outer ovate to lance-ovate (puberulent, often densely gland-dotted, apices acute to acuminate), inner lanceolate (± gland-dotted, apices obtuse to aristate).
in loose, paniculiform arrays.
in paniculiform or corymbiform arrays.
3–5 mm, hispidulous, strigose, or glandular-pubescent;
pappi of 28–40 smooth or barbellulate bristles.
2.7–5.5 mm, glabrous or strigose, sometimes hispidulous or velutinous and/or gland-dotted;
pappi of 20–28 white or tawny, usually plumose or subplumose, sometimes barbellate, bristles.
Brickellia coulteri
Brickellia eupatorioides
Varieties 3 (2 in the flora}.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Varieties 6 (6 in the flora).
(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 |
1. Leaf blades lance-linear or linear, 0.5–3 mm wide | → 2 |
1. Leaf blades lanceolate, lance-linear, lance-ovate, or lance-rhombic, 1–40 mm wide | → 4 |
2. Florets 9–13 | var. floridana |
2. Florets 16–30 | → 3 |
3. Leaf blades 1–3 mm wide (lengths of proximal leaves greater than distals); involucres 8–13 mm | var. chlorolepis |
3. Leaf blades 0.5–1 mm wide (lengths of proximal leaves equaling distals); involucres 5–10 mm | var. gracillima |
4. Phyllaries: lengths of outers and mids 1/2–1 times inners, apices long-acuminate, usuallycontorted | var. texana |
4. Phyllaries: lengths of outers and mids to 1/2 times inners, apices obtuse, acute, or acuminate, not contorted | → 5 |
5. Leaves 1-nerved from bases; petioles 0–1 mm; heads borne singly or 2–3 in loose, paniculiform arrays | var. chlorolepis |
5. Leaves 1- or 3-nerved from bases; petioles 0–10 mm; heads mostly 3–8 in dense, corymbiform arrays. | → 6 |
6. Involucres 7–11 mm; florets 6–15 | var. eupatorioides |
6. Involucres 8–15 mm; florets 15–35 | var. corymbulosa |
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