Flora of North America species comparison

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Dalea nana

dwarf dalea, dwarf prairie-clover
Stems

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

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

0–3.5 cm.
Stamens

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

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

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

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

1.8–2.2 mm.
Perennial

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

leaves 1–2.5(–3) cm;

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

Dalea nana
Distribution
from USDA
sw United States; n Mexico
[WildflowerSearch map]
[BONAP county map]
Discussion

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.
Parent taxa 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. 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
Name authority 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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