Flora of North America species comparison

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Dalea filiformis

Sonoran prairie-clover
Stems

(0.4–)0.7–3(–3.5) dm, eglandular.
Inflorescences

spikes, relatively densely flowered, not involucrate, 5–7 mm diam.;

axis not to partially visible, (0.2–)0.3–1.5(–2) cm;

bracts early deciduous, 1.5–2.8 mm.
Peduncles

(1.3–)2–8 cm.
Stamens

10, 2.5–3.5 mm, filaments distinct to 0.6–0.9 mm, anthers 0.2–0.3 mm.
Corollas

all pinkish or reddish, or banner paler; papilionaceous;

banner 2.6–3.5 mm, blade ovate or deltate-ovate, 1.4–1.8 × 0.9–1.6 mm; epistemonous petals attached proximal to middle of stamen tube;

wings 1.2–1.8(–2) × 0.8–1.1 mm;

keel connate valvately, blades 1.4–1.9 × 0.8–1.1 mm.
Calyces

± asymmetric, not strongly recessed opposite banner, opening oblique, (2.5–)2.8–3.5 mm, pilosulous;

tube (1.3–)2.8–3.5 mm, with 0 or 1(or 2) small glands between ribs, lobes triangular-acuminate or -aristate.
Legumes

2–2.4 mm, pilosulous and, sometimes, gland-dotted distally.
Seeds

1.5–1.9 mm.
Annual

herbs, erect, glabrous or glabrate proximal to inflorescences.
Principal

leaves 1–3.5 cm;

leaflets 3 or 5, blades linear-filiform, 5–23 mm.
2n

= 14.

Dalea filiformis
Phenology Flowering late summer–fall (spring).
Habitat Open oak, juniper, or pine woodlands, grasslands, rocky soils along roads, disturbed places.
Elevation 1600–2400 m. (5200–7900 ft.)
Distribution
from FNA
AZ; NM; Mexico (Chihuahua, Durango, Sonora)
[WildflowerSearch map]
[BONAP county map]
Discussion

Dalea filiformis is distinctive in its relatively few, narrow leaflets. Its range is primarily southeastern and central Arizona and southwestern New Mexico, but it does occur in northern Arizona to nearly the Utah border, and there is one report for northern New Mexico in Sandoval County.

(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. exigua, D. exserta, D. feayi, 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
Name authority A. Gray: Smithsonian Contr. Knowl. 5(6): 39. (1853)
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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