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James' dalea, James' prairie clover

black dalea, black prairie clover

Habit Shrubs, highly branched, glabrous proximal to inflorescences.
Stems

0.4–1.7(–2) dm, eglandular.

3–8(–12) dm, glandular-tuberculate distally.

Inflorescences

spikes, relatively densely flowered, not obviously involucrate, (16–)18–23(–25) mm diam.;

axis not to partially visible, 1.5–6.5(–8) cm;

bracts deciduous at anthesis, (4–)5–8(–9) mm.

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

axis usually not visible, 0.2–2.5 cm;

bracts deciduous, 2.2–3.4(–4.5) mm.

Peduncles

absent or very short.

0.2–4.5(–5) cm.

Stamens

10, (9.5–)10–11.7 mm, filaments distinct to 1.7–3 mm, anthers (0.8–)0.9–1.2 mm.

10, 6.8–8.2 mm, filaments distinct to 1.8–2.7 mm, anthers 0.5–0.8 mm.

Corollas

clear yellow, orangish brown in age; papilionaceous;

banner 5.2–6.2 mm, blade deltate-cordate, 3.2–4.2 × 3.2–4.4 mm, proximal lobes connate, forming obconic pit; epistemonous petals attached proximal to middle of stamen tube;

wings 3.9–5.1 × 2.3–3.2 mm;

keel connate valvately, blades 5.3–6.3 × 3.2–3.8 mm.

usually bicolored, rarely all white, banner whitish with yellowish eye, reddish in age, epistemonous petals vivid pink-purple; papilionaceous;

banner 5.1–6.2 mm, blade ovate-cordate, 3.2–4.2 × 3.4–4.6 mm, proximal lobes connate, forming obconic pit; epistemonous petals attached near or proximal to middle of stamen tube;

wings 4.3–5.2 × 2.7–3 mm;

keel connate valvately, blades (5–)5.3–6.5 × 3.3–3.9 mm.

Calyces

somewhat asymmetric, slightly recessed opposite banner, (8.3–)8.5–12(–13.3) mm, pilose;

tube (2.4–)2.8–3.5 mm, with 3 or 4 small glands between ribs, lobes triangular-aristate.

subsymmetric, 3.8–4.2 mm, glabrous;

tube 2.6–3.2(–3.5) mm, usually with 3–5(–7) glands between ribs, lobes broadly triangular to triangular-acuminate, unequal, abaxial longest.

Legumes

3.5–4 mm, distally with 2 rows of ascending hairs on either side of a glabrescent row, eglandular.

2.8–3.5 mm, glabrous or distally pilosulous, dotted with small glands distally.

Seeds

2.3–3 mm.

1.7–2.3 mm.

Perennial

herbs, erect to ascending, silky-pilose to -pilosulous.

Principal

leaves (0.6–)1–3(–4) cm;

leaflets 3, blades obovate to broadly oblanceolate, (3–)5–18 mm, surfaces apparently eglandular.

leaves 1–2 cm;

leaflets 9–19(or 21), blades obovate to broadly oblanceolate, 1.5–3.5(–5) mm.

2n

= 14.

= 14.

Dalea jamesii

Dalea frutescens

Phenology Flowering spring–early summer (fall). Flowering late summer–fall (spring).
Habitat Rocky grasslands, deserts, open pine or juniper woodlands. Rocky ground, desert grasslands, scrub, open juniper or oak wood­lands, often on limestone.
Elevation 900–2100 m. (3000–6900 ft.) 200–2300 m. (700–7500 ft.)
Distribution
from FNA
AZ; CO; KS; NM; OK; TX; Mexico (Chihuahua)
[WildflowerSearch map]
[BONAP county map]
from FNA
NM; OK; TX; Mexico (Chihuahua, Coahuila, Nuevo León, Tamaulipas, Zacatecas)
[WildflowerSearch map]
[BONAP county map]
Discussion

Dalea jamesii occurs from far southwestern Kansas to southeastern Arizona. In Texas, the species occurs in the northern panhandle and trans-Pecos regions.

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

Dalea frutescens is reported to be palatable for livestock and to decline under grazing pressure. In Texas, the species is widespread away from the coastal areas and generally from the Edwards Plateau westward to the trans-Pecos region.

(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. 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
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. 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 Psoralea jamesii
Name authority (Torrey) Torrey & A. Gray: Fl. N. Amer. 1: 308. (1838) A. Gray: Boston J. Nat. Hist. 6: 175. (1850)
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