Flora of North America species comparison

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Dalea brachystachys

Dalea flavescens

Canyonlands prairie clover
Stems

(0.5–)1–3.5(–4) dm, eglandular or sparsely glandular-verruculose.

(2.5–)3–4.5 dm, glandular-tuberculate.
Inflorescences

spikes, densely flowered, not obviously involucrate, 8–11 mm diam.;

axis not to partially visible, 0.3–1.6 cm;

bracts deciduous near anthesis, 2.5–6 mm.

spikes, densely flowered, not involucrate, 8.5–12(–13) mm diam.;

axis not visible, (1–)1.5–7(–10) cm;

bracts deciduous, interfloral ones often held in place by crowded flowers, 2.5–5.5(–6.5) mm.
Peduncles

1–7 cm.

(4–)7–20(–25) cm.
Stamens

(9 or)10, 3.5–5.5 mm, filaments distinct to 1–1.4(–2) mm, anthers 0.3–0.5(–0.6) mm.

5, (5.5–)6.2–10(–12.7) mm, filaments distinct to 3.4–6.2(–8.7) mm, anthers 0.9–1.6 mm.
Corollas

clear yellow, pinkish or brownish in age; papilionaceous;

banner 2–3.4(–6) mm, blade deltate-ovate or cordate, 1–2 × 1–2 mm; epistemonous petals attached proximal to middle of stamen tube;

wings 1–2(–2.9) × 0.7–1.1(–1.8) mm;

keel connate valvately, blades 1.8–2.8(–3.8) × 1.3–2(–2.4) mm.

white, ochroleucous in drying;

not conventionally papilionaceous;

banner 5–7.4(–8.4) mm, blade broadly triangular to ovate, 2.6–4.2 ×2.2–3.9(–4.5) mm; epistemonous petals attached at separation of filaments, blades 3–3.9(–4.5) × 0.9–1.6(–1.9) mm.
Calyces

subsymmetric, (3.5–)4.4–5.8(–6) mm, pilose;

tube 1.5–2.1 mm, with (0–)3 glands between ribs, lobes triangular-aristate.

asymmetric, deeply recessed opposite banner, (3–)3.3–4.7(–5.2) mm, pilosulous, especially distally;

tube (2–)2.2–2.8 mm, with 0–3 small, pale blister glands between ribs, lobes lanceolate.
Legumes

2.3–2.6 mm, pilosulous and, sometimes, gland-dotted distally.

3.1–3.7 mm, pilosulous distally and dotted with small glands.
Seeds

1.4–1.7 mm.

2.1–2.4 mm.
Annual

herbs (monocarpic), erect or diffuse, glabrous proximal to inflorescences.

Principal

leaves 0.8–2.5(–3) cm;

leaflets (3 or)5–11, blades oblanceolate to linear-oblanceolate, 2–14(–16) mm.

leaves (2–)2.5–4(–4.5) cm;

leaflets 5 or 7, blades oblong-obovate to narrowly oblong-elliptic, 7–17(–19) mm, surfaces glandular-punctate to glandular-verruculose abaxially.
Perennial

herbs, erect, pilosulous except stems glabrous.
2n

= 14.

Dalea brachystachys

Dalea flavescens
Phenology Flowering late summer–fall (spring). Flowering late spring–summer.
Habitat Dry, open habitats in deserts, desert grasslands, open oak, juniper, or pine woodlands. Dry hills, sandy or rocky places, desert shrub communities, sometimes on limestone.
Elevation 1300–2500 m. (4300–8200 ft.) 900–1600 m. (3000–5200 ft.)
Distribution
from FNA
AZ; NM; TX; Mexico (Chihuahua, Coahuila, Durango, Puebla, San Luis Potosí, Sonora, Tamaulipas, Zacatecas)
from FNA
AZ; UT
[WildflowerSearch map]
[BONAP county map]
Discussion

Dalea brachystachys is found as far south as southeastern Puebla. In the flora area, it is most common in extreme southeastern Arizona and adjacent southwestern New Mexico, with scattered populations through much of both states. Unlike most annual Dalea species, it is rarely weedy.

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

The distributions of Dalea flavescens and D. searlsiae are nearly discrete.

(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. 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
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. 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
Synonyms D. lemmonii Petalostemon flavescens, D. epica
Name authority A. Gray: Smithsonian Contr. Knowl. 5(6): 39. (1853) (S. Watson) S. L. Welsh ex Barneby: Mem. New York Bot. Gard. 27: 231. (1977)
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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