FNA: Dalea bicolor var. argyrea vs. Dalea bicolor

	Dalea bicolor var. argyrea	Dalea bicolor
	silver prairie clover	silver prairie clover
Habit	Shrubs, relatively erect, low and rounded, pilosulous distally.
Stems	(2–)4–9 dm, glandular-tuberculate or -verrucose distally.
Inflorescences	spikes, relatively densely flowered, not involucrate, 8–10 mm diam.; axis not to partially visible, 0.5–4 cm; bracts persistent or deciduous, 1–5.5(–6) mm.
Peduncles	0–4(–5) cm.
Stamens	10, 5.6–10.5(–12) mm, filaments distinct to (1.7–)2–4 mm, anthers 0.6–1 mm.
Corollas	bicolored, banner yellowish or white, reddish in age, epistemonous petals rose-purple to pink or violet; papilionaceous; banner 3.2–7.5(–8) mm, blade deltate-cordate to orbiculate, (2.2–)2.8–4.8(–5.8) × 2.4–5.2 mm; epistemonous petals attached near or proximal to middle of stamen tube; wings 3.6–5.5 × 1.8–3 mm; keel connate valvately, blades 4.6–7 × 2.1–4.4 mm.
Calyces	subsymmetric, (3.5–)3.8–5 mm, densely short-pubescent; tube 2.6–3.2 mm, with 2–4 blister glands between ribs, lobes broadly triangular-apiculate, unequal, abaxial longest.
Legumes	2.2–2.7 mm, usually pilosulous distally, rarely glabrous, and dotted with small glands.
Seeds	apparently unknown.
Principal	leaves 1–3.5 cm; leaflets (5 or)7–13, blades obovate to obovate-oblong, (2–)3–9 mm.

	Dalea bicolor var. argyrea	Dalea bicolor
Phenology	Flowering (summer–)fall(–winter).
Habitat	Rocky slopes, open and brushy areas, often on limestone soils.
Elevation	400–2100 m. (1300–6900 ft.)
Distribution	NM; TX; Mexico (Coahuila, Nuevo León, Tamaulipas) [BONAP county map]	sw United States; Mexico [WildflowerSearch map] [BONAP county map]
Discussion	Variety argyrea occurs in trans-Pecos Texas and Val Verde County, and in southeastern New Mexico in Chaves, Eddy, and Lincoln counties. (Discussion copyrighted by Flora of North America; reprinted with permission.)	Varieties 5 (1 in the flora). Only var. argyrea enters the flora area; the other varieties are confined to Mexico. Variety orcuttiana Barneby occurs in Baja California, var. naviculifolia (Hemsley) Barneby in Oaxaca, var. canescens (M. Martens & Galeotti) Barneby in Oaxaca and Puebla, and var. bicolor is widely distributed in central and northern Mexico. (Discussion copyrighted by Flora of North America; reprinted with permission.)
Source	FNA vol. 11.	FNA vol. 11.
Parent taxa	Fabaceae > subfam. Faboideae > Dalea > Dalea bicolor	Fabaceae > subfam. Faboideae > Dalea
Sibling taxa		D. albiflora, D. aurea, D. bartonii, 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. wrightii
Subordinate taxa		D. bicolor var. argyrea
Synonyms	D. argyrea
Name authority	(A. Gray) Barneby: Mem. New York Bot. Gard. 27: 427. (1977)	Humboldt & Bonpland ex Willdenow: Hort. Berol. 2: plate 89. (1809): Enum. Pl., 787. (1809)
Web links	WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Dalea bicolor

silver prairie clover

Habit

Shrubs, relatively erect, low and rounded, pilosulous distally.

Stems

(2–)4–9 dm, glandular-tuberculate or -verrucose distally.

Inflorescences

spikes, relatively densely flowered, not involucrate, 8–10 mm diam.;

axis not to partially visible, 0.5–4 cm;

bracts persistent or deciduous, 1–5.5(–6) mm.

Peduncles

0–4(–5) cm.

Stamens

10, 5.6–10.5(–12) mm, filaments distinct to (1.7–)2–4 mm, anthers 0.6–1 mm.

Corollas

bicolored, banner yellowish or white, reddish in age, epistemonous petals rose-purple to pink or violet; papilionaceous;

banner 3.2–7.5(–8) mm, blade deltate-cordate to orbiculate, (2.2–)2.8–4.8(–5.8) × 2.4–5.2 mm; epistemonous petals attached near or proximal to middle of stamen tube;

wings 3.6–5.5 × 1.8–3 mm;

keel connate valvately, blades 4.6–7 × 2.1–4.4 mm.

Calyces

subsymmetric, (3.5–)3.8–5 mm, densely short-pubescent;

tube 2.6–3.2 mm, with 2–4 blister glands between ribs, lobes broadly triangular-apiculate, unequal, abaxial longest.

Legumes

2.2–2.7 mm, usually pilosulous distally, rarely glabrous, and dotted with small glands.

Seeds

apparently unknown.

Principal

leaves 1–3.5 cm;

leaflets (5 or)7–13, blades obovate to obovate-oblong, (2–)3–9 mm.

Dalea bicolor

Phenology

Flowering (summer–)fall(–winter).

Habitat

Rocky slopes, open and brushy areas, often on limestone soils.

Elevation

400–2100 m. (1300–6900 ft.)

Distribution

NM; TX; Mexico (Coahuila, Nuevo León, Tamaulipas)

[BONAP county map]

sw United States; Mexico

[WildflowerSearch map]

[BONAP county map]

Discussion

Variety argyrea occurs in trans-Pecos Texas and Val Verde County, and in southeastern New Mexico in Chaves, Eddy, and Lincoln counties.

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

Varieties 5 (1 in the flora).

Only var. argyrea enters the flora area; the other varieties are confined to Mexico. Variety orcuttiana Barneby occurs in Baja California, var. naviculifolia (Hemsley) Barneby in Oaxaca, var. canescens (M. Martens & Galeotti) Barneby in Oaxaca and Puebla, and var. bicolor is widely distributed in central and northern Mexico.

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

Source

FNA vol. 11.

Parent taxa

Fabaceae > subfam. Faboideae > Dalea > Dalea bicolor

Fabaceae > subfam. Faboideae > Dalea

Sibling taxa

D. albiflora, D. aurea, D. bartonii, 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. wrightii

Subordinate taxa

D. bicolor var. argyrea

Synonyms

D. argyrea

Name authority

(A. Gray) Barneby: Mem. New York Bot. Gard. 27: 427. (1977)

Humboldt & Bonpland ex Willdenow: Hort. Berol. 2: plate 89. (1809): Enum. Pl., 787. (1809)

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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Dalea bicolor var. argyrea

Dalea bicolor

Dalea bicolor var. argyrea

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