Flora of North America species comparison

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Dalea multiflora

Dalea purpurea

roundhead prairie clover

purple prairie-clover
Stems

3–8 dm, glandular-punctate.

2–9 dm, eglandular or with few scattered glands.
Inflorescences

spikes, densely flowered, nearly globose, inconspicuously involucrate (lowest bracts not subtending flowers), 7–9 mm diam.;

axis not visible, 0.4–1(–1.2) cm;

bracts early deciduous or proximals persistent, interfloral ones held in place by crowded flowers, 2–2.4 mm.

spikes, densely flowered, not involucrate, 7–12 mm diam.;

axis not visible, (1–)1.5–7 cm;

bracts persistent through anthesis, (2.3–)2.7–5.8(–7) mm.
Peduncles

(0–)0.5–3(–7) cm.

(0–)3–15 cm.
Stamens

5, (5–)5.2–7.6 mm, filaments distinct to 2.5–4.5 mm, anthers 0.7–1.2 mm.

5, 5.6–8.5(–9) mm, filaments distinct to 3–5.2(–5.5) mm, anthers (0.7–)0.8–1.3(–1.4) mm.
Corollas

white;

not conventionally papilionaceous;

banner (4–)4.2–5.7 mm, blade deltate-obovate, 2.3–3.4 × 2.4–3.7(–4.2) mm; epistemonous petals attached at separation of filaments, blades 2.3–3.5 × 1.5–2.1 mm.

rose, magenta, pale purple, lilac, or pink;

not conventionally papilionaceous;

banner (4.3–)4.7–6.7(–7.2) mm, blade ovate to suborbiculate, 1.7–2.6(–2.8) × 1.7–2.8(–3.2) mm; epistemonous petals attached at separation of filaments, blades 2.5–3.8(–4) × 0.8–1.3(–1.5)mm.
Calyces

subsymmetric, (2.9–)3–4.2(–4.4) mm, glabrous, lobes ciliolate;

tube 1.6–2.6 mm, not deeply recessed opposite banner, with 1(–3) small blister glands between ribs, lobes lanceolate to triangular, ± unequal, abaxial pair longest.

subsymmetric, 3.2–4.5 mm, pilosulous, base with antrorse hairs;

tube (1.7–)2–2.8(–2.9) mm, with 0 glands between ribs, lobes lanceolate to ovate, adaxial pair broadest.
Legumes

2.5–3 mm, glabrate, with ± prominent elongated glands on sides.

2.1–2.6 mm, distally pilosulous and gland-dotted.
Seeds

1.6–2 mm.

1.6–2.1 mm.
Perennial

herbs, erect to spreading, glabrous.

herbs, erect to spreading, glabrous, puberulent, pilose, or tomentulose.
Principal

leaves 2–3 cm;

leaflets (7 or)9 or 11(or 13), blades oblong to elliptic-oblanceolate, or linear-oblong, 7–13 mm.

leaves 1.7–4(–4.5) cm;

leaflets 3 or 5(or 7), blades linear to linear-elliptic, (7–)10–24(–28) mm.

Dalea multiflora

Dalea purpurea
Phenology Flowering late spring–early fall.
Habitat Prairies, rocky hills.
Elevation 0–700 m. (0–2300 ft.)
Distribution
from FNA
CO; KS; MO; NE; OK; TX
[WildflowerSearch map]
[BONAP county map]
from USDA
North America
[WildflowerSearch map]
[BONAP county map]
Discussion

Dalea multiflora shows considerable geographic variation in stature. Its floral structure is similar to that of D. candida var. candida, and individuals intermediate between the two species occur (R. C. Barneby 1977c). In Texas, D. multiflora is known from the eastern two-thirds of the state.

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

Varieties 2 (2 in the flora).

Dalea purpurea is characteristic of prairies and has a wide geographical distribution. It is sometimes cultivated for its showy purple flowers and drought tolerance. Livestock find it palatable; it decreases with grazing.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Spikes (8–)9.5–12 mm diam.; peduncles 0–10 cm (often absent or very short on side shoots).
var. purpurea
1. Spikes 7–9 mm diam.; peduncles 3–15 cm.
var. arenicola
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. 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. 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. 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. 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. purpurea var. arenicola, D. purpurea var. purpurea
Synonyms Petalostemon multiflorus, Kuhnistera multiflora Petalostemon purpureus
Name authority (Nuttall) Shinners: Field & Lab. 17: 82. (1949) Ventenat: Descr. Pl. Nouv., plate 40. (1801)
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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