Flora of North America species comparison

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Dalea laniceps

Dalea brachystachys

woollyhead prairie clover
Stems

0.3–0.8 dm, eglandular.

(0.5–)1–3.5(–4) dm, eglandular or sparsely glandular-verruculose.
Inflorescences

spikes, densely flowered, not obviously involucrate, 15–20 mm diam.;

axis not visible, 0.7–3(–3.5) cm;

bracts persistent through anthesis, 6–9 mm.

spikes, densely flowered, not obviously involucrate, 8–11 mm diam.;

axis not to partially visible, 0.3–1.6 cm;

bracts deciduous near anthesis, 2.5–6 mm.
Peduncles

absent.

1–7 cm.
Stamens

10, 10–11 mm, filaments distinct to 1.2–1.6 mm, anthers 0.5–0.6 mm.

(9 or)10, 3.5–5.5 mm, filaments distinct to 1–1.4(–2) mm, anthers 0.3–0.5(–0.6) mm.
Corollas

clear yellow, reddish brown in age; papilionaceous;

banner 7–8.2 mm, blade reniform, 1.8–2.4 × 1.9–2.8 mm; epistemonous petals attached distal to middle of stamen tube;

wings 2.4–2.7 × 1.2–1.4 mm;

keel connate valvately, blades 3.2–4 × 1.6–2 mm.

clear yellow, pinkish or brownish in age; papilionaceous;

banner 2–3.4(–6) mm, blade deltate-ovate or cordate, 1–2 × 1–2 mm; epistemonous petals attached proximal to middle of stamen tube;

wings 1–2(–2.9) × 0.7–1.1(–1.8) mm;

keel connate valvately, blades 1.8–2.8(–3.8) × 1.3–2(–2.4) mm.
Calyces

somewhat asymmetric, slightly recessed opposite banner, 7.8–8.7 mm, densely pilose;

tube 2.5–2.9 mm, with 2 or 3 small glands between ribs, lobes triangular-aristate, becoming plumose.

subsymmetric, (3.5–)4.4–5.8(–6) mm, pilose;

tube 1.5–2.1 mm, with (0–)3 glands between ribs, lobes triangular-aristate.
Legumes

± 2.5 mm, distally with 2 rows of ascending hairs on either side of a glabrescent row, eglandular.

2.3–2.6 mm, pilosulous and, sometimes, gland-dotted distally.
Seeds

2.3–3 mm.

1.4–1.7 mm.
Perennial

herbs, erect to ascending, silvery-pilose.

Principal

leaves (1–)1.5–3.5 cm;

leaflets 3, blades rhombic-ovate to elliptic-oblanceolate, 5–18 mm, surfaces apparently eglandular.

leaves 0.8–2.5(–3) cm;

leaflets (3 or)5–11, blades oblanceolate to linear-oblanceolate, 2–14(–16) mm.
Annual

herbs (monocarpic), erect or diffuse, glabrous proximal to inflorescences.
2n

= 14.

= 14.

Dalea laniceps

Dalea brachystachys
Phenology Flowering summer–fall. Flowering late summer–fall (spring).
Habitat Rocky slopes and hills, deserts, grasslands, open pine woods. Dry, open habitats in deserts, desert grasslands, open oak, juniper, or pine woodlands.
Elevation 900–2500 m. (3000–8200 ft.) 1300–2500 m. (4300–8200 ft.)
Distribution
from FNA
TX; Mexico (Chihuahua, Coahuila, Durango, Nuevo León, San Luis Potosí, Zacatecas)
[BONAP county map]
from FNA
AZ; NM; TX; Mexico (Chihuahua, Coahuila, Durango, Puebla, San Luis Potosí, Sonora, Tamaulipas, Zacatecas)
Discussion

In the flora area, Dalea laniceps is limited to the southeastern area of trans-Pecos Texas.

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

Dalea brachystachys is found as far south as southeastern Puebla. In the flora area, it is most common in extreme southeastern Arizona and adjacent southwestern New Mexico, with scattered populations through much of both states. Unlike most annual Dalea species, it is rarely weedy.

(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. lachnostachys, D. lanata, 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. 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. 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 D. lemmonii
Name authority Barneby: SouthW. Naturalist 15: 390. (1971) 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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