Flora of North America species comparison

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Dalea lachnostachys

Dalea lasiathera

glandleaf prairie clover

purple dalea
Stems

1.5–4 dm, black-warty.

1–3(–3.5) dm, sparsely gland-dotted.
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.

spikes, relatively densely flowered, not involucrate, 11–13 mm diam.;

axis not to partially visible, 2–6 cm;

bracts persistent, (3–)3.5–5.5 mm.
Peduncles

1–8(–11) cm.

1.5–5(–6) cm.
Stamens

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

10, 8.5–12 mm, filaments distinct to 3.4–4.7 mm, anthers 0.8–1.2 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.

violet-purple, banner with yellowish center; papilionaceous;

banner 6.2–7.5 mm, blade broadly ovate, 3.8–4.6 × 4.2–5 mm, proximal lobes connate, forming obconic pit; epistemonous petals attached near or proximal to middle of stamen tube;

wings 3.7–4.7 × 2.2–3 mm;

keel connate valvately, blades 5.3–6.5 × 2.3–3.7 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.

± asymmetric, opening oblique, 5.3–6.9 mm, silky-pilosulous;

tube 3.3–3.9 mm, with 3–5(–16) glands between ribs, lobes triangular-subulate, not plumose.
Legumes

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

3–3.5 mm, pilosulous distally, eglandular.
Seeds

1.8–2.4 mm.

2.3 mm.
Perennial

herbs, erect, ± pilosulous.

herbs, decumbent to ascending, glabrous proximal to inflorescences.
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.

leaves (1–)1.5–3 cm;

leaflets (3–)7–11, blades linear-oblanceolate to elliptic, 5–12 mm.
2n

= 14.

Dalea lachnostachys

Dalea lasiathera
Phenology Flowering late summer–fall. Flowering spring (fall).
Habitat Open deserts, dry grass­lands, open woodlands, sometimes on limestone. Rocky hillsides, open oak woods, with mesquite.
Elevation 1000–1800 m. (3300–5900 ft.) 150–1600 m. (500–5200 ft.)
Distribution
from FNA
AZ; NM; TX; Mexico (Chihuahua, Coahuila, Sonora)
[BONAP county map]
from FNA
TX; Mexico (Coahuila, Nuevo León, Tamaulipas)
[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.)

Dalea lasiathera is most abundant on the Edwards Plateau with outlying populations in the trans-Pecos region and Wichita County in the Red River valley.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Dalea 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
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. lachnostachys, D. lanata, D. laniceps, 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) A. Gray: Smithsonian Contr. Knowl. 3(5): 48. (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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