Dalea hallii |
Dalea jamesii |
|
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Hall's prairie clover |
James' dalea, James' prairie clover |
|
Stems | 1.3–3(–4) dm, eglandular or with scattered small glands. |
0.4–1.7(–2) dm, eglandular. |
Inflorescences | spikes, relatively loosely flowered, not involucrate, 14–17 mm diam.; axis partially visible, 1–5 cm; bracts deciduous near anthesis, 4–6.5 mm. |
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. |
Peduncles | usually absent, rarely to 1 cm. |
absent or very short. |
Stamens | 10, 9.5–11.5 mm, filaments distinct to 2.5–3 mm, anthers (0.7–)0.8–1 mm. |
10, (9.5–)10–11.7 mm, filaments distinct to 1.7–3 mm, anthers (0.8–)0.9–1.2 mm. |
Corollas | yellow, rarely brownish in age; papilionaceous; banner 5–6.2 mm, blade deltate-cordate, 2.8–3.3 × 3–3.8 mm; epistemonous petals attached near middle of stamen tube; wings 3.6–5 × 2.2–2.8 mm; keel connate valvately, blades 5.2–6.4 × 3.6–4 mm. |
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. |
Calyces | asymmetric, recessed opposite banner, (5.1–)5.5–7.8 mm, pilosulous to pilose; tube 2.4–3 mm, with 2 or 3 small glands between ribs, lobes lanceolate-aristate. |
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. |
Legumes | 3 mm, distally with 2 rows of ascending hairs on either side of a glabrescent row, eglandular. |
3.5–4 mm, distally with 2 rows of ascending hairs on either side of a glabrescent row, eglandular. |
Seeds | 2.2 mm. |
2.3–3 mm. |
Perennial | herbs, decumbent to ascending, strigulose. |
herbs, erect to ascending, silky-pilose to -pilosulous. |
Principal | leaves 1.5–4.5 cm; leaflets 3, blades linear-elliptic to linear, 8–30(–35) mm. |
leaves (0.6–)1–3(–4) cm; leaflets 3, blades obovate to broadly oblanceolate, (3–)5–18 mm, surfaces apparently eglandular. |
2n | = 14. |
|
Dalea hallii |
Dalea jamesii |
|
Phenology | Flowering spring (fall). | Flowering spring–early summer (fall). |
Habitat | Rocky outcrops in grasslands, usually on limestone. | Rocky grasslands, deserts, open pine or juniper woodlands. |
Elevation | 100–600 m. (300–2000 ft.) | 900–2100 m. (3000–6900 ft.) |
Distribution |
TX |
AZ; CO; KS; NM; OK; TX; Mexico (Chihuahua)
|
Discussion | Dalea hallii is endemic to central and north-central Texas from the edge of the Edwards Plateau from as far south as Bandera County northward to Fannin County along the Red River. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Psoralea jamesii | |
Name authority | A. Gray: Proc. Amer. Acad. Arts 8: 625. (1873) | (Torrey) Torrey & A. Gray: Fl. N. Amer. 1: 308. (1838) |
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