Brickellia rusbyi |
Brickellia knappiana |
|
---|---|---|
stinking brickellbush |
Knapp brickellbush, Knapp's brickellia |
|
Habit | Perennials, 60–120 cm (bases woody). | Shrubs, 100–200 cm. |
Stems | branched, puberulent, gland-dotted. |
(arching) branched from near bases, gland-dotted. |
Leaves | alternate; petioles 10–50 mm; blades 3-nerved from bases, deltate or rhombic-ovate, 50–100 × 20–50 mm, bases acute to truncate, margins crenate or coarsely dentate, apices long-acuminate, abaxial faces sparsely villous, gland-dotted, adaxial faces glabrous or sparsely pubescent, often gland-dotted. |
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). |
Peduncles | 4–6 mm, puberulent, sparsely gland-dotted. |
2–5 mm, densely glandular-pubescent. |
Involucres | cylindric to campanulate, 7–10 mm. |
cylindric to narrowly campanulate, 6–9 mm. |
Florets | 13–20; corollas yellowish, 5.3–6.5 mm. |
5–7; corollas white, 5–6.5 mm. |
Phyllaries | 22–26 in 4–7 series, 3–5-striate, unequal, margins scarious (apices obtuse to acute); outer ovate to lanceolate (often purple-tinged, glabrous or puberulent), inner linear to oblong (greenish, 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). |
Heads | in paniculiform arrays. |
in paniculiform arrays. |
Cypselae | 2–2.5 mm, sericeous; pappi of 26–32 white, barbellate bristles. |
2.5–3, puberulent to sparsely pubescent; pappi of 28–32 white, barbellulate bristles. |
2n | = 18. |
|
Brickellia rusbyi |
Brickellia knappiana |
|
Phenology | Flowering Aug–Oct. | Flowering Sep–Oct. |
Habitat | Rocky slopes, shaded areas | Gravelly washes |
Elevation | 1500–2500 m (4900–8200 ft) | 700–1700 m (2300–5600 ft) |
Distribution |
AZ; NM; Mexico
|
CA |
Discussion | Brickellia rusbyi has been considered ill-smelling. (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.) |
Source | FNA vol. 21, p. 506. | FNA vol. 21, p. 501. |
Parent taxa | Asteraceae > tribe Eupatorieae > Brickellia | Asteraceae > tribe Eupatorieae > Brickellia |
Sibling taxa | ||
Name authority | A. Gray: in A. Gray et al., Syn. Fl. N. Amer. 1(2): 106. (1884) | Drew: Pittonia 1: 260. (1888) |
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