Dalea foliosa |
Dalea urceolata |
|
---|---|---|
leafy prairie-clover |
pineforest prairie clover |
|
Stems | 3–8 dm, eglandular. |
|
Inflorescences | spikes, densely flowered, not involucrate, 8–10 mm diam.; axis not visible, 1.5–4.5 cm; bracts persistent through anthesis, 4.8–5.4 mm. |
|
Peduncles | 0–2 cm. |
|
Stamens | 5, 5.4–7.2 mm, filaments distinct to 2.7–3.7 mm, anthers 0.6–0.9 mm. |
|
Corollas | lavender-purple; not conventionally papilionaceous; banner 5.2–6 mm, blade ovate to suborbiculate, 2.1–2.5 × 2.6–3.2 mm; epistemonous petals attached at separation of filaments, blades 2.7–3 × 0.8–1 mm. |
|
Calyces | subsymmetric, 3.8–4.4 mm, glabrous or lobes sometimes pilosulous; tube 2.4–2.7 mm, with 0 glands between ribs, lobes triangular-lanceolate or adaxial pair ovate-triangular. |
|
Legumes | 2.5–3 mm, glabrous, dotted with small glands distally. |
|
Seeds | 1.8–2 mm. |
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Perennial | herbs, erect, glabrous proximal to inflorescences. |
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Principal | leaves 3–5.5 cm; leaflets 19–29(or 31), blades oblong-oblanceolate to -elliptic, 5–10 mm. |
|
Dalea | urceolata is remarkable for its reduced corolla with two epistemonous petals and is rare throughout most of its range. |
|
2n | = 14. |
|
Dalea foliosa |
Dalea urceolata |
|
Phenology | Flowering late summer–fall. | |
Habitat | Limestone glades, prairie remnants. | |
Elevation | 100–300 m. (300–1000 ft.) | |
Distribution |
AL; IL; TN
|
sw United States; Mexico |
Discussion | Dalea foliosa is rare and in 1991 was designated federally as endangered. At that time, there were 14 known populations, only four of which had state or Nature Conservancy protection. The species is in the Center for Plant Conservation’s National Collection of Endangered Plants. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 3 (1 in the flora). Variety tripetala (Paul G. Wilson) Barneby occurs in south-central Mexico (Michoacán to Morelos) and has fewer stamens (5–7) than var. urceolata (7–10). Variety lucida (Rose ex Rydberg) Barneby occurs in Durango and lacks the epistemonous petals; the banner is the only petal. (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 | ||
Subordinate taxa | ||
Synonyms | Petalostemon foliosus | |
Name authority | (A. Gray) Barneby: Mem. New York Bot. Gard. 27: 245. (1977) | Greene: Leafl. Bot. Observ. Crit. 1: 199. (1906) |
Web links |