Flora of North America species comparison

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Dalea flavescens

Dalea exserta

Canyonlands prairie clover

Mexican prairie clover
Stems

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

ribbed, (1.5–)5–10(–12) dm, glandular-verrucose distally.
Inflorescences

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.

spikes, relatively densely flowered, not involucrate, 13–16 mm diam.;

axis usually not visible, (1.5–)2–8 cm;

bracts deciduous by anthesis, (3–)4–8 mm.
Peduncles

(4–)7–20(–25) cm.

(1–)2.5–14 cm.
Stamens

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.

8–10, (7.5–)8–11 mm, filaments distinct to 0.1–1.6 mm, anthers 0.4–0.5 mm.
Corollas

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.

white, sometimes banner purplish in age;

not conventionally papilionaceous;

banner 4.9–7.3 mm, blade lanceolate-oblong to oblong-elliptic, 3–4.8 × 2.2–2.3 mm; epistemonous petals attached near or proximal to middle of stamen tube, blades somewhat unequal, laterals (2–)3.4–5 × 1–1.8 mm, abaxials 3–3.7 × 1.1–1.6 mm.
Calyces

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.

asymmetric, recessed opposite banner, 4.8–7 mm, glabrous;

tube (2.5–)2.7–3.8 mm, with 2–4(–8) large glands between ribs, lobes triangular-aristate.
Legumes

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

2.2–2.8 mm, pilosulous distally and dotted with small glands.
Seeds

2.1–2.4 mm.

1.6–1.8(–2) mm.
Perennial

herbs, erect, pilosulous except stems glabrous.

Principal

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.

leaves 3–10 cm;

leaflets 19–37, blades oblong-elliptic to oblanceolate, 2–9 mm.
Annual

herbs, erect, glabrous proximal to inflorescences.
2n

= 14 (Mexico).

Dalea flavescens

Dalea exserta
Phenology Flowering late spring–summer. Flowering fall–spring.
Habitat Dry hills, sandy or rocky places, desert shrub communities, sometimes on limestone. Openings in woods, disturbed ground.
Elevation 900–1600 m. (3000–5200 ft.) 1000–1200 m. (3300–3900 ft.)
Distribution
from FNA
AZ; UT
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; Mexico; Central America
[BONAP county map]
Discussion

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

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

The existence of Dalea exserta in the flora area rests on specimens collected in 1939 by Goodding in Sycamore Canyon, near Ruby in Santa Cruz County. Because it is an annual that often grows in disturbed ground, it may be found again there or at some other locality in southern Arizona.

(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. 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. 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
Synonyms Petalostemon flavescens, D. epica Parosela exserta
Name authority (S. Watson) S. L. Welsh ex Barneby: Mem. New York Bot. Gard. 27: 231. (1977) (Rydberg) Gentry: Publ. Carnegie Inst. Wash. 527: 138. (1942)
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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