Dalea nana |
Dalea lumholtzii |
|||||
---|---|---|---|---|---|---|
dwarf dalea, dwarf prairie-clover |
lumholtz's prairie clover |
|||||
Stems | (0.5–)1–3.5 dm, nearly eglandular. |
1.5–5(–6) dm, glandular-verruculose. |
||||
Inflorescences | spikes, densely to loosely flowered, not involucrate, 7–13(–15) mm diam.; axis not to partially visible, 0.5–4(–5) cm; bracts deciduous at anthesis or later, 2.5–5.5 mm. |
spikes, densely flowered, not obviously involucrate, 6–8.5 mm diam.; axis not visible, 0.4–1.4(–3) cm; bracts persistent, (1.5–)2–4 mm. |
||||
Peduncles | 0–3.5 cm. |
(1.5–)2.5–10 cm. |
||||
Stamens | 10, (6–)6.4–10 mm, filaments distinct to 1.1–2.3 mm, anthers 0.4–0.7 mm. |
10, 5–7.7 mm, filaments distinct to 2.6–3.7 mm, anthers 0.6–0.7 mm. |
||||
Corollas | clear yellow, purplish or brownish in age; papilionaceous; banner (4–)4.4–5.5 mm, blade suborbiculate-cordate to reniform, 1.5–3.2 × (1.5–)2–3.6 mm; epistemonous petals attached near or distal to middle of stamen tube; wings 2.1–3.7 × 0.9–1.8 mm; keel connate valvately, blades 2.9–4.8 × 1.6–2.8 mm. |
white, or epistemonous petals blue or bluish; not conventionally papilionaceous; banner plane, 3–5.2 mm, blade ovate-elliptic to suborbiculate, not peltate, 2–2.4 × 2–2.4 mm; epistemonous petals attached near middle of stamen tube, blades 2.3–4 × 1.1–1.3 mm. |
||||
Calyces | subsymmetric, 4.5–6.5(–7.5) mm, densely pilose; tube 1.9–2.7 mm, with 3 or 4 small glands between ribs, lobes triangular-aristate, becoming plumose. |
strongly asymmetric, deeply recessed opposite banner, 2.7–4(–4.3) mm, glabrate or pubescent distally; tube 2.1–2.8(–3) mm, with (0 or)3–6 minute glands between ribs, lobes subulate. |
||||
Legumes | 2.5–3 mm, distally with 2 rows of ascending hairs on either side of a glabrescent row, eglandular. |
2.2–2.6 mm, puberulent distally, eglandular. |
||||
Seeds | 1.8–2.2 mm. |
1.6–1.8 mm. |
||||
Perennial | herbs, prostrate, diffusely spreading, or erect, silky-pilosulous. |
herbs, erect, pilosulous to puberulent. |
||||
Principal | leaves 1–2.5(–3) cm; leaflets (3 or)5(or 7), blades obovate to olanceolate, 3–15 mm, surfaces inconspicuously glandular-punctate abaxially. |
leaves (2–)2.5–5 cm; leaflets (9–)21–35, blades linear, linear-oblanceolate, or linear-elliptic, (1.5–)2–9(–10) mm. |
||||
Dalea nana |
Dalea lumholtzii |
|||||
Phenology | Flowering fall. | |||||
Habitat | Open rocky hillsides and canyons, open pine or oak woodlands. | |||||
Elevation | 1400–1900 m. (4600–6200 ft.) | |||||
Distribution |
sw United States; n Mexico
|
AZ; Mexico (Chihuahua, Sonora) |
||||
Discussion | Varieties 2 (2 in the flora). Dalea nana shows extensive variability in a number of features, including habit, height, and bract shape. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Some herbarium labels comment on the lemon odor of Dalea lumholtzii. Although the epistemonous petals are generally blue or bluish, white-petaled plants are not uncommon in the flora area. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
||||
Key |
|
|||||
Source | FNA vol. 11. | FNA vol. 11. | ||||
Parent taxa | Fabaceae > subfam. Faboideae > Dalea | Fabaceae > subfam. Faboideae > Dalea | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Name authority | Torrey ex A. Gray: Mem. Amer. Acad. Arts, n. s. 4: 31. (1849) | B. L. Robinson & Fernald: Proc. Amer. Acad. Arts 30: 115. (1894) | ||||
Web links |