Flora of North America species comparison

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Dalea wrightii

Dalea nana

Wright's dalea, Wright's prairie-clover

dwarf dalea, dwarf prairie-clover
Stems

0.4–2.6(–3.6) dm, eglandular.

(0.5–)1–3.5 dm, nearly eglandular.
Inflorescences

spikes, relatively densely flowered, not involucrate, 17–23 mm diam.;

axis not to partially visible, (1.5–)2–6 cm;

bracts deciduous near anthesis, 6–12 mm.

spikes, densely to loosely flowered, not involucrate, 7–13(–15) mm diam.;

axis not to partially visible, 0.5–4(–5) cm;

bracts deciduous at anthesis or later, 2.5–5.5 mm.
Peduncles

absent or very short.

0–3.5 cm.
Stamens

10, 10–13 mm, filaments distinct to 1.5 mm, anthers 0.5–0.7 mm.

10, (6–)6.4–10 mm, filaments distinct to 1.1–2.3 mm, anthers 0.4–0.7 mm.
Corollas

clear yellow, pinkish or orangish brown in age; papilionaceous;

banner 7.8–9.5 mm, blade cordate, 2–3 × 2.4–3.4 mm; epistemonous petals attached distal to middle of stamen tube;

wings 2.6–3.4 × 1.8–2.3 mm;

keel connate valvately, blades (2.6–)3–4(–4.2) × 1.6–2.2 mm.

clear yellow, purplish or brownish in age; papilionaceous;

banner (4–)4.4–5.5 mm, blade suborbiculate-cordate to reniform, 1.5–3.2 × (1.5–)2–3.6 mm; epistemonous petals attached near or distal to middle of stamen tube;

wings 2.1–3.7 × 0.9–1.8 mm;

keel connate valvately, blades 2.9–4.8 × 1.6–2.8 mm.
Calyces

somewhat asymmetric, slightly recessed opposite banner, (8.5–)9–12.3 mm, densely pilose;

tube (2.5–)2.7–3.5 mm, with 4 glands between ribs, lobes triangular-aristate, becoming plumose.

subsymmetric, 4.5–6.5(–7.5) mm, densely pilose;

tube 1.9–2.7 mm, with 3 or 4 small glands between ribs, lobes triangular-aristate, becoming plumose.
Legumes

2.8–3.5 mm, distally with 2 rows of ascending hairs on either side of a glabrescent row, eglandular.

2.5–3 mm, distally with 2 rows of ascending hairs on either side of a glabrescent row, eglandular.
Seeds

2–2.8 mm.

1.8–2.2 mm.
Perennial

herbs, erect to decumbent or ascending, silky-pilose.

herbs, prostrate, diffusely spreading, or erect, silky-pilosulous.
Principal

leaves 1–3.5 cm;

leaflets 5, blades rhombic-ovate to lanceolate, 4–15(–20) mm, surfaces apparently eglandular.

leaves 1–2.5(–3) cm;

leaflets (3 or)5(or 7), blades obovate to olanceolate, 3–15 mm, surfaces inconspicuously glandular-punctate abaxially.
2n

= 14.

Dalea wrightii

Dalea nana
Phenology Flowering early spring–fall.
Habitat Rocky grasslands, desert slopes, on limestone.
Elevation 500–1800 m. (1600–5900 ft.)
Distribution
from FNA
AZ; NM; TX; Mexico (Chihuahua, Coahuila, Sonora)
[WildflowerSearch map]
[BONAP county map]
from USDA
sw United States; n Mexico
[WildflowerSearch map]
[BONAP county map]
Discussion

Dalea wrightii occurs in southeastern Arizona, southern New Mexico, and trans-Pecos Texas.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Varieties 2 (2 in the flora).

Dalea nana shows extensive variability in a number of features, including habit, height, and bract shape.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Bracts 2–4 mm wide; spikes loosely flowered, axis partially visible.
var. nana
1. Bracts 1.2–2 mm wide; spikes densely flowered, axis not visible.
var. carnescens
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. 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. reverchonii, D. sabinalis, D. scandens, D. scariosa, D. searlsiae, D. tentaculoides, D. tenuifolia, D. tenuis, D. urceolata, D. versicolor, D. villosa
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. 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
Subordinate taxa
D. nana var. carnescens, D. nana var. nana
Synonyms D. wrightii var. warnockii
Name authority A. Gray: Smithsonian Contr. Knowl. 3(5): 49. (1852) Torrey ex A. Gray: Mem. Amer. Acad. Arts, n. s. 4: 31. (1849)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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