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Gregg's dalea, Gregg's prairie clover

Comanche Peak prairie clover

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.

2n

= 14 (Mexico).

Dalea greggii

Dalea reverchonii

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
from FNA
AZ; NM; TX; Mexico (Chihuahua, Coahuila, Durango, Nuevo León, San Luis Potosí, Tamaulipas, Zacatecas, south as far as Oaxaca)
[WildflowerSearch map]
[BONAP county map]
from FNA
TX
[BONAP county map]
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 Fabaceae > subfam. Faboideae > Dalea Fabaceae > subfam. Faboideae > Dalea
Sibling taxa
D. albiflora, D. aurea, D. bartonii, D. bicolor, D. brachystachys, D. cahaba, D. candida, D. carnea, D. carthagenensis, D. compacta, D. cylindriceps, D. emarginata, D. enneandra, D. exigua, D. exserta, D. feayi, D. filiformis, D. flavescens, D. foliosa, D. formosa, D. frutescens, D. gattingeri, D. grayi, D. hallii, D. jamesii, D. lachnostachys, D. lanata, D. laniceps, D. lasiathera, D. leporina, D. lumholtzii, D. mollis, D. mollissima, D. multiflora, D. nana, D. neomexicana, D. obovata, D. ornata, D. phleoides, D. pinnata, D. pogonathera, D. polygonoides, D. pringlei, D. pulchra, D. purpurea, D. reverchonii, D. sabinalis, D. scandens, D. scariosa, D. searlsiae, D. tentaculoides, D. tenuifolia, D. tenuis, D. urceolata, D. versicolor, D. villosa, D. wrightii
D. albiflora, D. aurea, D. bartonii, D. bicolor, D. brachystachys, D. cahaba, D. candida, D. carnea, D. carthagenensis, D. compacta, D. cylindriceps, D. emarginata, D. enneandra, D. exigua, D. exserta, D. feayi, D. filiformis, D. flavescens, D. foliosa, D. formosa, D. frutescens, D. gattingeri, D. grayi, D. greggii, D. hallii, D. jamesii, D. lachnostachys, D. lanata, D. laniceps, D. lasiathera, D. leporina, D. lumholtzii, D. mollis, D. mollissima, D. multiflora, D. nana, D. neomexicana, D. obovata, D. ornata, D. phleoides, D. pinnata, D. pogonathera, D. polygonoides, D. pringlei, D. pulchra, D. purpurea, D. sabinalis, D. scandens, D. scariosa, D. searlsiae, D. tentaculoides, D. tenuifolia, D. tenuis, D. urceolata, D. versicolor, D. villosa, D. wrightii
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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