Dalea ornata |
Dalea albiflora |
|
---|---|---|
Blue Mountain prairie-clover, ornate dalea, western prairie clover |
whiteflower prairie clover |
|
Stems | (2–)2.5–6(–7) dm, dotted with small, raised glands. |
(2–)2.5–5(–7) dm, sparsely gland-dotted distally. |
Inflorescences | spikes, densely flowered, not involucrate, 13–16 mm diam.; axis not visible, (1–)1.5–5 cm; bracts deciduous, interfloral ones often held in place by crowded flowers, (3–)4–7.5(–8.5) mm. |
spikes, densely flowered, not involucrate, 7–10 mm diam.; axis not visible, (1–)1.5–6(–7) cm; bracts early deciduous to persistent, 1.5–3.2 mm. |
Peduncles | 1–11 cm. |
0.5–8.5 cm. |
Stamens | 5, (7.3–)7.7–12 mm, filaments distinct to (3.6–)4.7–7.6 mm, anthers 1–1.4 mm. |
10, (5–)6–8 mm, filaments distinct to 3.5–4.5 mm, anthers 0.4–0.6 mm. |
Corollas | usually rose-purple to lilac, rarely white; not conventionally papilionaceous; banner 7–9 mm, blade ovate to oblong-ovate, 3.3–4.5 × (2–)2.3–4 mm; epistemonous petals attached at separation of filaments, blades (3.3–)3.5–5 × 1.4–2 mm. |
white; not conventionally papilionaceous; banner plane, (4.4–)5–6.4 mm, blade oblong-ovate, not peltate, proximally cordate to cuneate, (2.6–)3–4 × (2–)2.2–3.4 mm; epistemonous petals attached high on stamen tube, just proximal to separation of filaments, blades (2.7–)3.1–4.4 × (0.8–)1.3–1.9(–2.2) mm. |
Calyces | subsymmetric, (3.6–)3.9–6.3(–6.7) mm, pilose throughout or distally; tube (2.4–)2.7–3.6(–3.8) mm, with 2–9 small glands between ribs, lobes lanceolate to ovate. |
asymmetric, recessed opposite banner, (2.8–)3.2–5.1 mm, pilosulous; tube (1.9–)2–3(–3.3) mm, with 3–6 glands between ribs, lobes triangular. |
Legumes | 3–3.5 mm, pilosulous distally and gland-dotted. |
2.2–2.9 mm, villosulous distally and gland-dotted. |
Seeds | 2–2.4 mm. |
1.6–2 mm. |
Perennial | herbs, erect, glabrous proximal to inflorescence. |
herbs, erect, ± silky-villosulous. |
Principal | leaves 2.5–5.5(–6.5) cm; leaflets 5 or 7 (or 9), blades oblanceolate to obovate, 7–22 mm. |
leaves 1–4 cm; leaflets (13–)17–35(–41), blades oblanceolate to linear-elliptic, (1.5–)2–7(–10) mm. |
2n | = 14. |
= 14, 24. |
Dalea ornata |
Dalea albiflora |
|
Phenology | Flowering spring–early summer. | Flowering fall (spring–summer). |
Habitat | Rocky, sandy, or clay soils in dry areas, often among sagebrush. | Open woodlands, grasslands, roadsides. |
Elevation | 100–2000 m. (300–6600 ft.) | 1000–2300 m. (3300–7500 ft.) |
Distribution |
CA; ID; NV; OR; WA
|
AZ; NM; Mexico (Chihuahua, Durango, Sinaloa, Sonora)
|
Discussion | Dalea ornata is nearly endemic to the Columbia-Snake river basin. In California, the species is known only from the Shaffer Mountain region in Lassen County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Dalea albiflora is a complex and variable species that could use further morphological and cytological studies. While herbarium specimens cannot be sorted into varieties in any consistent way, in the field, delicate plants with slender, creeping rootstocks may grow with, and appear quite distinct from, plants with a stout caudex; such plants have been called D. ordiae. There are few chromosome counts available; preliminary study suggests that the former plants are tetraploid and the latter diploid (D. E. Ward et al. 1993). (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 | ||
Synonyms | Petalostemon ornatus | D. ordiae |
Name authority | (Douglas) Eaton & Wright: Man. Bot. ed. 8, 219. (1840) — (as ornatum) | A. Gray: Smithsonian Contr. Knowl. 5(6): 38. (1853) |
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