Dalea aurea |
Dalea pringlei |
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golden dalea, golden prairie clover |
Pringle's dalea, Pringle's prairie clover |
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Stems | (2–)3–7.5 dm, nearly eglandular. |
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Inflorescences | spikes, densely flowered, not involucrate, (12–)14–21 mm diam.; axis not visible, (1–)1.5–6 cm; bracts persistent to anthesis, 2.5–5.5 mm. |
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Peduncles | absent or very short, sometimes appearing relatively long due to small size of distalmost leaves. |
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Stamens | 10, 10–12.5 mm, filaments distinct to 2.5–3 mm, anthers 0.6–0.9 mm. |
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Corollas | clear yellow; papilionaceous; banner 6.3–8.6 mm, blade deltate-cordate, 3–4.2 × 3.2–4.4 mm; epistemonous petals attached near middle of stamen tube; wings 4.7–5.6 × 2–2.4 mm; keel connate valvately, blades (4.7–)5–7 × 2.6–3.2 mm. |
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Calyces | subsymmetric, 6.1–7.4 mm, silky-pilose; tube 2.2–2.8 mm, with 3 or 4 small glands between ribs, lobes lanceolate-aristate, becoming plumose. |
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Legumes | 3–3.5 mm, distally with 2 rows of ascending hairs on either side of a glabrescent row, eglandular. |
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Seeds | 2–2.4 mm. |
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Perennial | herbs, erect, pilose to pilosulous. |
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Principal | leaves 1–3.5(–4) cm; leaflets (3 or)5(or 7), blades obovate to oblong-oblanceolate, (3–)4–16(–20) mm. |
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2n | = 14, 24. |
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Dalea aurea |
Dalea pringlei |
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Phenology | Flowering summer–early fall. | |
Habitat | Open prairies, dry slopes, rocky or sandy areas, on limestone. | |
Elevation | 10–1800 m. (0–5900 ft.) | |
Distribution |
AZ; CO; KS; NE; NM; OK; SD; TX; WY; Mexico (Chihuahua, Coahuila)
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sw United States; n Mexico
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Discussion | Dalea aurea is sometimes cultivated in rock gardens or dry soil for its showy flowers with yellow petals. In Texas, the species is quite widespread. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 3 (1 in the flora). Two varieties of Dalea pringlei occur in Mexico. Variety multijuga Barneby is found in Chihuahua, Sinaloa, and Sonora, while var. oxyphyllidia Barneby is restricted to the Río Mayo area of Sonora. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | ||
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | D. ceciliana | |
Name authority | Nuttall ex Pursh: Fl. Amer. Sept. 2: 740. (1813) | A. Gray: Proc. Amer. Acad. Arts 17: 201. (1882) |
Web links |