Dalea albiflora |
Dalea tenuis |
|
---|---|---|
whiteflower prairie clover |
pinkglobe prairie clover |
|
Stems | (2–)2.5–5(–7) dm, sparsely gland-dotted distally. |
1.5–4(–5) dm, sparsely glandular-punctate. |
Inflorescences | 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. |
spikes, densely flowered, not involucrate, 7–12 mm diam.; axis not visible, 0.5–2.5 cm; bracts persistent through anthesis, 1.5–4.5 mm. |
Peduncles | 0.5–8.5 cm. |
2.5–18 cm. |
Stamens | 10, (5–)6–8 mm, filaments distinct to 3.5–4.5 mm, anthers 0.4–0.6 mm. |
5, 6–8.5 mm, filaments distinct to 2.5–4.8 mm, anthers 0.8–1 mm. |
Corollas | 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. |
pink; not conventionally papilionaceous; banner 4.6–5.8 mm, blade ovate, 2.2–2.5 × 1.5–2.8 mm; epistemonous petals attached at separation of filaments, blades 2.7–3.1 ×1–1.3 mm. |
Calyces | 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. |
subsymmetric, 3–5.2 mm, silky-pilosulous, base with subappressed and retrorse hairs; tube 2–3.1 mm, with 0 glands between ribs, lobes subulate or adaxial pair triangular-ovate. |
Legumes | 2.2–2.9 mm, villosulous distally and gland-dotted. |
3.6 mm, glabrous or apically pilosulous, eglandular. |
Seeds | 1.6–2 mm. |
apparently unknown. |
Perennial | herbs, erect, ± silky-villosulous. |
herbs, erect, glabrous or sparsely pilosulous. |
Principal | leaves 1–4 cm; leaflets (13–)17–35(–41), blades oblanceolate to linear-elliptic, (1.5–)2–7(–10) mm. |
leaves 1.5–3.5 cm; leaflets 3 or 5, blades linear, 6–15 mm. |
2n | = 14, 24. |
|
Dalea albiflora |
Dalea tenuis |
|
Phenology | Flowering fall (spring–summer). | Flowering late spring–early summer (fall). |
Habitat | Open woodlands, grasslands, roadsides. | Rocky limestone soils. |
Elevation | 1000–2300 m. (3300–7500 ft.) | 200–600 m. (700–2000 ft.) |
Distribution |
AZ; NM; Mexico (Chihuahua, Durango, Sinaloa, Sonora)
|
OK; TX |
Discussion | 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.) |
Dalea tenuis is largely a species of central Texas occurring as far east as McLennan County and south to Bandera County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | D. ordiae | Petalostemon violaceus var. tenuis, P. tenuis |
Name authority | A. Gray: Smithsonian Contr. Knowl. 5(6): 38. (1853) | (J. M. Coulter) Shinners: Field & Lab. 17: 84. (1949) |
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