Flora of North America species comparison

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Dalea exserta

Dalea laniceps

Mexican prairie clover

woollyhead prairie clover
Stems

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

0.3–0.8 dm, eglandular.
Inflorescences

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.

spikes, densely flowered, not obviously involucrate, 15–20 mm diam.;

axis not visible, 0.7–3(–3.5) cm;

bracts persistent through anthesis, 6–9 mm.
Peduncles

(1–)2.5–14 cm.

absent.
Stamens

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

10, 10–11 mm, filaments distinct to 1.2–1.6 mm, anthers 0.5–0.6 mm.
Corollas

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.

clear yellow, reddish brown in age; papilionaceous;

banner 7–8.2 mm, blade reniform, 1.8–2.4 × 1.9–2.8 mm; epistemonous petals attached distal to middle of stamen tube;

wings 2.4–2.7 × 1.2–1.4 mm;

keel connate valvately, blades 3.2–4 × 1.6–2 mm.
Calyces

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.

somewhat asymmetric, slightly recessed opposite banner, 7.8–8.7 mm, densely pilose;

tube 2.5–2.9 mm, with 2 or 3 small glands between ribs, lobes triangular-aristate, becoming plumose.
Legumes

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

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

1.6–1.8(–2) mm.

2.3–3 mm.
Annual

herbs, erect, glabrous proximal to inflorescences.

Principal

leaves 3–10 cm;

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

leaves (1–)1.5–3.5 cm;

leaflets 3, blades rhombic-ovate to elliptic-oblanceolate, 5–18 mm, surfaces apparently eglandular.
Perennial

herbs, erect to ascending, silvery-pilose.
2n

= 14 (Mexico).

= 14.

Dalea exserta

Dalea laniceps
Phenology Flowering fall–spring. Flowering summer–fall.
Habitat Openings in woods, disturbed ground. Rocky slopes and hills, deserts, grasslands, open pine woods.
Elevation 1000–1200 m. (3300–3900 ft.) 900–2500 m. (3000–8200 ft.)
Distribution
from FNA
AZ; Mexico; Central America
[BONAP county map]
from FNA
TX; Mexico (Chihuahua, Coahuila, Durango, Nuevo León, San Luis Potosí, Zacatecas)
[BONAP county map]
Discussion

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.)

In the flora area, Dalea laniceps is limited to the southeastern area of trans-Pecos Texas.

(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. 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. flavescens, D. foliosa, D. formosa, D. frutescens, D. gattingeri, D. grayi, D. greggii, D. hallii, D. jamesii, D. lachnostachys, D. lanata, 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 Parosela exserta
Name authority (Rydberg) Gentry: Publ. Carnegie Inst. Wash. 527: 138. (1942) Barneby: SouthW. Naturalist 15: 390. (1971)
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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