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slimspike prairie clover

Stems

(2.5–)3–7 dm, glandular-tuberculate.

Inflorescences

spikes, densely flowered, not obviously involucrate, 5.5–7.5 mm diam.;

axis not visible, (1.5–)2.5–9(–13) cm;

bracts early deciduous or proximals persistent, interfloral ones held in place by crowded flowers, 2.5–4.5 mm.

Peduncles

(1–)2–20(–25) cm.

Stamens

5, 5.2–7.4 mm, filaments distinct to 3–4.3 mm, anthers 0.6–0.9 mm.

Corollas

white;

not conventionally papilionaceous;

banner 5.3–6.8 mm, blade deltate-obcordate, 2.8–3.5(–4) × 2.6–3.6(–5.2) mm; epistemonous petals attached at or near separation of filaments, blades 3–3.9 × 0.5–0.9 mm.

Calyces

asymmetric, deeply recessed opposite banner, 2.5–3.8 mm, glabrous or pilosulous;

tube 1.7–2.5(–2.8) mm, with 1 or 2 blister glands between ribs, adaxial with 3–7, lobes triangular-subulate or adaxial pair broadly triangular.

Legumes

2.5–2.9 mm, pilosulous distally, sometimes also gland-dotted.

Seeds

apparently unknown.

Perennial

herbs, erect, pilosulous throughout or in part.

Principal

leaves 2.5–5.5(–6.5) cm;

leaflets 13–41(–49), blades oblong to oblanceolate or oblong-elliptic, 2–14 mm, surfaces glandular-verruculose abaxially.

Dalea phleoides

Distribution
from USDA
sc United States
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

B. L. Turner (2013) divided Dalea phleoides into three species: D. phleoides, distinguished from D. drummondiana by longer leaf blades and calyces, and D. carrizoana, based on the absence of indument and an allopatric distribution (from DeWitt to Maverick counties) south of the range of the other two species; the latter two are treated here as synonyms of D. phleoides var. microphylla.

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

Key
1. Leaflets 13–21(–25), blades 5–14 mm.
var. phleoides
1. Leaflets 25–41(–49), blades 2–7 mm.
var. microphylla
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. nana, D. neomexicana, D. obovata, D. ornata, 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. phleoides var. microphylla, D. phleoides var. phleoides
Synonyms Petalostemon phleoides
Name authority (Torrey & A. Gray) Shinners: Field & Lab. 17: 83. (1949)
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