Dalea jamesii |
Dalea frutescens |
|
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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 |
AZ; CO; KS; NM; OK; TX; Mexico (Chihuahua)
|
NM; OK; TX; Mexico (Chihuahua, Coahuila, Nuevo León, Tamaulipas, Zacatecas)
|
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 | ||
Sibling taxa | ||
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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