Flora of North America species comparison

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Brickelliastrum fendleri

Brickelliastrum

Fendler's brickellbush

brickellbush
Habit Perennials or subshrubs, 30–80+ cm (plants not viscid).
Caudices

woody, fibrous-rooted.

Stems

erect to declined, puberulent.

decumbent to erect, much branched from bases.
Leaves

petioles 8–30 mm;

blades mostly 3–9 × 2–5.5 cm, bases truncate to cordate, margins crenate-serrate to serrate, faces minutely and sparsely puberulent.

cauline; mostly opposite (distal sometimes alternate); petiolate;

blades usually 3-nerved, deltate to ovate, margins crenate-dentate, faces pubescent or glabrous, sometimes gland-dotted.
Involucres

± campanulate, 4–7 mm diam.
Receptacles

convex, epaleate.
Florets

25–35;

corollas white or yellowish white, throats funnelform (lengths 2.5–4 times diams.);

styles: bases not enlarged, glabrous, branches narrowly clavate.
Corollas

3.5–4.5 mm.

Phyllaries

persistent, 20–25 in 3–4 series, 2- or 4-nerved, lance-ovate to lanceolate, unequal (herbaceous to chartaceous).
Heads

discoid, in loose, corymbiform to paniculiform arrays.
Cypselae

prismatic, 5(–7)-ribbed, puberulent;

pappi readily falling or fragile, of ca. 25 barbellate bristles in 1 series.
x

= 10.
2n

= 20.

Brickelliastrum fendleri

Brickelliastrum
Phenology Flowering Jul–Sep(–Oct).
Habitat Limestone boulders, crevices, ridgetops, sandstone bluffs, pine woodlands, pine and fir with Douglas fir woods
Elevation 1700–2600(–2800) m (5600–8500(–9200) ft)
Distribution
from FNA
AZ; NM; TX; Mexico (Coahuila)
[WildflowerSearch map]
[BONAP county map]
from USDA
sw United States; n Mexico
[BONAP county map]
Discussion

Species 2 (1 in the flora).

B. L. Turner (1988c, 1994c, 1996+) placed Brickelliastrum, Asanthus, and the Mexican genus Dyscritogyne R. M. King & H. Robinson within Steviopsis R. M. King & H. Robinson. All four are essentially segregates of Brickellia, distinguished especially by their lack of pubescent swellings at bases of stylar shafts. As noted by Turner, this aggregate forms a heterogeneous group; the finer division is followed here until further evidence indicates a better taxonomic disposition.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 21, p. 507. FNA vol. 21, p. 507. Author: Guy L. Nesom.
Parent taxa Asteraceae > tribe Eupatorieae > Brickelliastrum Asteraceae > tribe Eupatorieae
Subordinate taxa
B. fendleri
Synonyms Brickellia fendleri, Eupatorium fendleri, Steviopsis fendleri
Name authority (A. Gray) R. M. King & H. Robinson: Phytologia 24: 64. (1972) R. M. King & H. Robinson: Phytologia 24: 63. (1972)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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