Dalea greggii |
Dalea reverchonii |
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Gregg's dalea, Gregg's prairie clover |
Comanche Peak prairie clover |
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Habit | Subshrubs, horizontal-spreading, mat-forming, at least young foliage silky-pilosulous. | |
Stems | procumbent or arching, often rooting along stems, 3–5(–20+) dm, eglandular or glandular-verruculose distally. |
1.5–2 dm, eglandular. |
Inflorescences | spikes, relatively densely flowered, not involucrate, 8–11 mm diam.; axis usually not visible, 0.4–3(–5.5) cm; bracts persistent, 2–4 mm. |
spikes, loosely flowered, not involucrate, 8–10 mm diam.; axis visible, 1.5–5 cm; bracts deciduous, 2.5 mm. |
Peduncles | 0–4(–6) cm. |
0–1 cm. |
Stamens | 10, 5.5–7.5 mm, filaments distinct to 1.7–2.4 mm, anthers 0.5–0.7 mm. |
5, 6.1–7.2 mm, filaments distinct to 3.3–4 mm, anthers 0.7–0.9 mm. |
Corollas | bicolored, banner cream to pale yellow, reddish in age, epistemonous petals pink to pink-purple; papilionaceous; banner 4.4–6.2 mm, blade deltate-cordate, 2.6–3.5 × 3.2–4.3 mm, proximal lobes connate, forming obconic pit; epistemonous petals attached proximal to middle of stamen tube; wings 3.2–4.6 × 1.6–2.4 mm; keel connate valvately, blades 4–4.8(–5.3) × 2.2–3.3 mm. |
magenta-purple; not conventionally papilionaceous; banner 4.3–4.6 mm, blade ovate to elliptic, 2.1–2.3 × 1.8–2 mm; epistemonous petals attached at separation of filaments, blades 2.6–3 × 1.1–1.3 mm. |
Calyces | subsymmetric, (4–)4.2–6 mm, silky-pilosulous; tube (2–)2.2–2.8(–3) mm, usually with 3–8(–10) blister glands between ribs (scattered or in a row), lobes triangular-acuminate to lanceolate or aristate, unequal, abaxial longest. |
subsymmetric, 4.2–4.6 mm, silky-pilosulous to -tomentulose, hairs subappressed; tube 1.9–2.1 mm, with ribs leading to sinuses stronger than those leading to lobes, tube appearing bluntly 5-angled, with 0 glands between ribs, lobes lanceolate-acuminate or adaxial pair triangular-acuminate. |
Legumes | 2.1–2.8 mm, pilosulous and gland-dotted distally. |
3.1–3.5 mm, pilosulous and gland-dotted distally. |
Seeds | 1.6–2 mm. |
1.3 mm. |
Principal | leaves 0.6–2.5(–3) cm; leaflets 5–9, blades obovate to oblanceolate, 2–7(–9) mm. |
leaves 2–3 cm; leaflets 7 or 9, blades linear-oblong or -oblanceolate, 5–12 mm. |
Perennial | herbs, decumbent, pilosulous. |
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2n | = 14 (Mexico). |
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Dalea greggii |
Dalea reverchonii |
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Phenology | Flowering spring, fall, (year-round). | Flowering spring–early summer (fall). |
Habitat | Rocky slopes, deserts, open woodlands, limestone soils. | Rocky limestone soils. |
Elevation | 600–1400 m. (2000–4600 ft.) | ca. 400 m. (ca. 1300 ft.) |
Distribution |
AZ; NM; TX; Mexico (Chihuahua, Coahuila, Durango, Nuevo León, San Luis Potosí, Tamaulipas, Zacatecas, south as far as Oaxaca)
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TX |
Discussion | Dalea greggii is cultivated as a ground cover and for erosion control in xeriscaping. In Texas, the species is known from the eastern trans-Pecos and Big Bend regions. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Dalea reverchonii occurs in Hood, Parker, and Wise counties in north-central Texas. It is in the Center for Plant Conservation’s National Collection of Endangered Plants. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Petalostemon reverchonii | |
Name authority | A. Gray: Pl. Nov. Thurb., 314. (1854) | (S. Watson) Shinners: Field & Lab. 17: 84. (1949) — (as reverchoni) |
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