Flora of North America species comparison

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Dalea exigua

Chihuahuan prairie clover
Stems

1–4(–4.5) dm, eglandular or weakly gland-dotted.
Inflorescences

spikes, densely flowered, not involucrate, 5–8 mm diam.;

axis not visible, (0.8–)1.3–4.5(–6) cm;

bracts persistent through anthesis, 2.5–3.3 mm.
Peduncles

(2.5–)4–16 cm.
Stamens

4–7, 3–6 fertile, 3.2–4 mm, filaments distinct to 1 mm, anthers 0.2–0.3 mm.
Corollas

lavender or pink-purple;

not conventionally papilionaceous;

banner 3.4–4.2 mm, blade ovate, 1.3–1.6 × 1–1.2 mm; epistemonous petals attached high on stamen tube, just proximal to separation of filaments, blades 1.7–2.3 × 0.9–1.1 mm.
Calyces

asymmetric, recessed opposite banner, 3.8–4.3 mm, silky-pilose;

tube 1.9–2.2 mm, with 0 glands between ribs, lobes triangular-aristate.
Legumes

2.5 mm, pilosulous distally, eglandular.
Seeds

1.9–2.3 mm.
Annual

herbs, erect, glabrate.
Principal

leaves 1.5–5.5 cm;

leaflets 3 or 5, blades linear-oblanceolate to -elliptic, (0.5–)1–3.7(–4) cm.

Dalea exigua
Phenology Flowering fall.
Habitat Grassy slopes, roadsides, open oak, juniper, or pine woodlands.
Elevation 1500–2400 m. (4900–7900 ft.)
Distribution
from FNA
AZ; NM; Mexico (Chihuahua, Sonora)
[BONAP county map]
Discussion

Dalea exigua occurs in southeastern Arizona (Cochise, Pima, and Santa Cruz counties) and adjacent southwestern New Mexico. A disjunct population occurs in McKinley County, New Mexico.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Dalea
Sibling taxa
D. albiflora, D. aurea, D. bartonii, D. bicolor, D. brachystachys, D. cahaba, D. candida, D. carnea, D. carthagenensis, D. compacta, D. cylindriceps, D. emarginata, D. enneandra, D. exserta, D. feayi, D. filiformis, D. flavescens, D. foliosa, D. formosa, D. frutescens, D. gattingeri, D. grayi, D. greggii, D. hallii, D. jamesii, D. lachnostachys, D. lanata, D. laniceps, D. lasiathera, D. leporina, D. lumholtzii, D. mollis, D. mollissima, D. multiflora, D. nana, D. neomexicana, D. obovata, D. ornata, D. phleoides, D. pinnata, D. pogonathera, D. polygonoides, D. pringlei, D. pulchra, D. purpurea, D. reverchonii, D. sabinalis, D. scandens, D. scariosa, D. searlsiae, D. tentaculoides, D. tenuifolia, D. tenuis, D. urceolata, D. versicolor, D. villosa, D. wrightii
Synonyms Petalostemon exilis
Name authority Barneby: Mem. New York Bot. Gard. 27: 200. (1977)
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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