Flora of North America species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Genistidium dumosum

Genistidium

brushpea

brushpea
Habit Shrubs to 1 m. Leaves 0.7–2(–3) cm; stipules subulate, 1–2 × 0.5 mm; petiole 0.2–0.6 cm, strigose; rachis canaliculate; petiolules 1 mm, glabrate; leaflet blades linear to narrowly oblanceolate, 5–20(–25) × 2–6(–8) mm, base attenuate to rounded, apex rounded. Shrubs, armed.
Stems

erect to ascending or scandent, broomlike, thorn-tipped, young growth sericeous.
Leaves

alternate, unifoliolate or odd-pinnate;

stipules present, caducous or persistent, subspinescent;

petiolate;

leaflets 1 or 3, blade margins entire, surfaces usually sericeous, sometimes sparsely so.
Inflorescences

bracts caducous, linear-lanceolate, 1–1.5 × 1 mm.

mostly solitary flowers, axillary, in distal unifoliolate leaves;

bracts present;

bracteoles absent.
Pedicels

1.5–2.5 mm.

Flowers

calyx tube 2.5–3.5 mm, sericeous, lobes 3–4 mm, abaxial ones longer, adaxial 2 slightly more connate with each other than with laterals;

corolla 6–8 mm, glabrous;

filaments subequal;

anthers to 1 mm, dehiscing longitudinally;

pistil densely sericeous.

papilionaceous;

calyx zygomorphic, campanulate, lobes 5;

corolla yellowish;

stamens 10, diadelphous;

anthers basifixed;

style glabrous basally, with pollen brush uniform in distal 1/2;

stigma terminal, capitate, ciliate.
Fruits

light to dark grayish brown, 15–30 × 4–6 mm, base blunt, apex acute, often terminating in persistent style base.

legumes, sessile, laterally compressed, linear, elastically dehiscent, sericeous.
Seeds

1–3(–6), lenticular;

hilum apical.
x

= 8.
2n

= 32.

Genistidium dumosum

Genistidium
Phenology Flowering summer.
Habitat Open, dry shrubby vegetation.
Elevation 900–1200 m. (3000–3900 ft.)
Distribution
from FNA
TX; Mexico (Coahuila, Nuevo León)
[BONAP county map]
from USDA
n Mexico; Texas
[BONAP county map]
Discussion

Genistidium dumosum comprises three disjunct population centers, one in western Texas (Brewster County), the others in west-central Coahuila and southern Nuevo León (M. Lavin and M. Sousa S. 1995). By all indications, populations are few and small, and whether these three centers represent distinct taxa remains unsettled.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Species 1.

Genistidium is native to the Chihuahuan Desert in western Texas and adjacent Mexico. It is readily distinguished from other woody native North American papilionoid genera by the combination of trifoliolate vegetative leaves and unifoliolate leaves on young branch ends that often harbor a solitary flower. The brushy or broomlike growth habit also is distinctive (M. Lavin and M. Sousa S. 1995).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11. FNA vol. 11. Author: Matt Lavin.
Parent taxa Fabaceae > subfam. Faboideae > Genistidium Fabaceae > subfam. Faboideae
Subordinate taxa
G. dumosum
Name authority I. M. Johnston: J. Arnold Arbor. 22: 113. (1941) I. M. Johnston: J. Arnold Arbor. 22: 113. (1941)
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).



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

Choose a data source: Flora of North America

The species comparison tool is brought to you by:
Northwest Wildflowers