FNA: Dalea lachnostachys

	Dalea lachnostachys
	glandleaf prairie clover
Stems	1.5–4 dm, black-warty.
Inflorescences	racemes, spikelike, relatively densely flowered, not involucrate, (15–)16–19(–20) mm diam.; axis usually not visible, 2.5–5 cm; bracts deciduous, 7–11 mm.
Peduncles	1–8(–11) cm.
Stamens	10, 6.6–8.7 mm, filaments distinct to 2.3–2.9 mm, anthers (0.5–)0.6–0.8 mm.
Corollas	dark blue or blue-violet; papilionaceous; banner 5.7–7.6 mm, blade shallowly cordate, (3.5–)3.8–4.8 × 2.2–3.8 mm; epistemonous petals attached well proximal to middle of stamen tube; wings 3.7–5 × 1.3–1.8 mm; keel connate by overlapping margins, blades (3.8–)4–4.7 × 1.7–2.2 mm.
Calyces	± symmetric, (4.3–)5.8–7.7 mm, pilose; tube 2.6–3.1 mm, with 3 or 4 small glands between ribs, lobes triangular-aristate.
Legumes	(3–)3.3–4 mm, pilosulous distally, eglandular.
Seeds	1.8–2.4 mm.
Perennial	herbs, erect, ± pilosulous.
Principal	leaves 3–8(–9.5) cm; leaflets (5 or) 7 or 9 (or 11), blades obovate, (5–)7–17 mm, margins entire or ± crenulate, surfaces glandular-pustulate around margins abaxially.
2n	= 14.

	Dalea lachnostachys
Phenology	Flowering late summer–fall.
Habitat	Open deserts, dry grasslands, open woodlands, sometimes on limestone.
Elevation	1000–1800 m. (3300–5900 ft.)
Distribution	AZ; NM; TX; Mexico (Chihuahua, Coahuila, Sonora) [BONAP county map]
Discussion	Dalea lachnostachys occurs in southern Arizona, southwestern New Mexico, and trans-Pecos Texas. (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. filiformis, D. flavescens, D. foliosa, D. formosa, D. frutescens, D. gattingeri, D. grayi, D. greggii, D. hallii, D. jamesii, 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. 3(5): 46. (1852)
Web links	WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Dalea lachnostachys

glandleaf prairie clover

Stems

1.5–4 dm, black-warty.

Inflorescences

racemes, spikelike, relatively densely flowered, not involucrate, (15–)16–19(–20) mm diam.;

axis usually not visible, 2.5–5 cm;

bracts deciduous, 7–11 mm.

Peduncles

1–8(–11) cm.

Stamens

10, 6.6–8.7 mm, filaments distinct to 2.3–2.9 mm, anthers (0.5–)0.6–0.8 mm.

Corollas

dark blue or blue-violet; papilionaceous;

banner 5.7–7.6 mm, blade shallowly cordate, (3.5–)3.8–4.8 × 2.2–3.8 mm; epistemonous petals attached well proximal to middle of stamen tube;

wings 3.7–5 × 1.3–1.8 mm;

keel connate by overlapping margins, blades (3.8–)4–4.7 × 1.7–2.2 mm.

Calyces

± symmetric, (4.3–)5.8–7.7 mm, pilose;

tube 2.6–3.1 mm, with 3 or 4 small glands between ribs, lobes triangular-aristate.

Legumes

(3–)3.3–4 mm, pilosulous distally, eglandular.

Seeds

1.8–2.4 mm.

Perennial

herbs, erect, ± pilosulous.

Principal

leaves 3–8(–9.5) cm;

leaflets (5 or) 7 or 9 (or 11), blades obovate, (5–)7–17 mm, margins entire or ± crenulate, surfaces glandular-pustulate around margins abaxially.

= 14.

Dalea lachnostachys

Phenology

Flowering late summer–fall.

Habitat

Open deserts, dry grasslands, open woodlands, sometimes on limestone.

Elevation

1000–1800 m. (3300–5900 ft.)

Distribution

AZ; NM; TX; Mexico (Chihuahua, Coahuila, Sonora)

[BONAP county map]

Discussion

Dalea lachnostachys occurs in southern Arizona, southwestern New Mexico, and trans-Pecos Texas.

(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. filiformis, D. flavescens, D. foliosa, D. formosa, D. frutescens, D. gattingeri, D. grayi, D. greggii, D. hallii, D. jamesii, 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. 3(5): 46. (1852)

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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Dalea lachnostachys

Dalea lachnostachys