Flora of North America species comparison

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Dalea candida

Dalea pinnata

white prairie-clover

summer farewell
Stems

2.5–10 dm, minutely gland-dotted or eglandular.

(3–)4.5–9(–10) dm, finely to coarsely glandular-tuberculate proximal to inflorescences.
Inflorescences

spikes, densely to somewhat loosely flowered, cylindric, not involucrate, 6–9.5(–10) mm diam.;

axis visible or not, especially in fruit, (1–)1.5–5.5(–7.5) cm;

bracts early deciduous or proximals persistent, interfloral ones held in place by crowded flowers, 2.5–5.5 mm.

spikes, densely flowered, appearing capitate, conspicuously involucrate, with several whorls of clearly differentiated sterile bracts proximal to spike, 6–13 mm diam.;

axis not visible, 0.6–1.2 cm;

bracts deciduous, basal involucral bracts persistent, becoming transitional to foliage leaves, 5–8 mm.
Peduncles

0–5.5(–7.5) cm.

absent.
Stamens

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

5, 8.8–10.8 mm, filaments distinct to 4.2–5.5 mm, anthers 0.6–0.9 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 2–3.1 × 1.1–2.6 mm.

white;

not conventionally papilionaceous;

banner (5–)5.4–8.6 mm, blade lanceolate to oblong-elliptic, proximally cuneate (subhastate), 2.7–4.3 × 0.6–1.4 mm; epistemonous petals attached at separation of filaments, blades 3–5 × 0.5–1.4 mm.
Calyces

subsymmetric, (2.9–)3–4.2(–4.4) mm, pilosulous or tube glabrous;

tube 1.9–2.7 mm, not deeply recessed opposite banner, with 1 (or 2) glands between ribs, lobes lanceolate to triangular, ± unequal, abaxial pair longest.

subsymmetric, slightly recessed opposite banner, 4.5–7.8(–8.2) mm, pilose;

tube (1.5–)1.7–2.3(–2.7) mm, with 0 glands between ribs, lobes linear, becoming plumose.
Legumes

(2.6–)2.8–4(–4.5) mm, glabrate or distally pilose, with ± prominent, elongated to circular glands on sides.

2.5–3 mm, pilosulous distally, eglandular.
Seeds

1.7–2.3 mm.

1.7 mm.
Perennial

herbs, erect to diffusely spreading, glabrous throughout or proximal to inflorescence.

herbs, erect, glabrous proximal to inflorescences.
Principal

leaves (1.5–)2–6 cm;

leaflets 5–9, blades oblong to obovate or narrowly elliptic-oblanceolate, (6–)9–35 mm.

leaves 1–2.5 cm;

leaflets 3–11(or 13), blades linear or elliptic-oblanceolate, 5–11 mm.

Dalea candida

Dalea pinnata
Distribution
from USDA
North America; n Mexico
[WildflowerSearch map]
[BONAP county map]
from USDA
se United States
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

Varieties candida and oligophylla were treated as separate species by D. K. Wemple (1970) and are fairly well defined. In regions of overlap, var. oligophylla normally occupies higher, drier sites than var. candida.

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

Varieties 3 (3 in the flora).

Dalea pinnata, with its headlike spikes and conspicuous involucres, resembles a member of the Asteraceae. This resemblance is heightened after the petals drop because the slender, plumose calyx-lobes begin to resemble a pappus.

The varieties of Dalea pinnata have limited geographical overlap and var. pinnata is the most widespread.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Spike axis not visible; calyx tube glabrous.
var. candida
1. Spike axis partially visible, especially in fruit; calyx tube usually pubescent, sometimes glabrous.
var. oligophylla
1. Leaflets 3.
var. trifoliata
1. Leaflets 5–11(or 13).
→ 2
2. Involucres: 6–9 mm wide; stems finely glandular-tuberculate proximal to spikes.
var. pinnata
2. Involucres 10–13 mm wide; stems coarsely glandular-tuberculate proximal to spikes.
var. adenopoda
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. 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. 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. 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. candida var. candida, D. candida var. oligophylla
D. pinnata var. adenopoda, D. pinnata var. pinnata, D. pinnata var. trifoliata
Synonyms Petalostemon candidus Kuhnia pinnata, Kuhnistera pinnata, Petalostemon pinnatus
Name authority Willdenow: Sp. Pl. 3: 1337. (1802) (J. F. Gmelin) Barneby: Mem. New York Bot. Gard. 27: 278. 1977 · Summer-farewell
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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