Flora of North America species comparison

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Dalea exigua

Dalea gattingeri

Chihuahuan prairie clover

Gattinger prairie clover, purpletassels
Stems

1–4(–4.5) dm, eglandular or weakly gland-dotted.

1.5–3.5 dm, usually glabrous or glabrescent at base, pilosulous distally, eglandular or with scattered small glands.
Inflorescences

spikes, densely flowered, not involucrate, 5–8 mm diam.;

axis not visible, (0.8–)1.3–4.5(–6) cm;

bracts persistent through anthesis, 2.5–3.3 mm.

spikes, moderately densely flowered, not involucrate, (8–)9–10 mm diam.;

axis becoming partially visible, 1.5–7.5 cm;

bracts early deciduous or proximals persistent, interfloral ones held in place by crowded flowers, 3–5(–6) mm.
Peduncles

(2.5–)4–16 cm.

0.5–2.5 cm.
Stamens

4–7, 3–6 fertile, 3.2–4 mm, filaments distinct to 1 mm, anthers 0.2–0.3 mm.

5, 6.3–7.8 mm, filaments distinct to 3.8–5.4 mm, anthers 0.8–1 mm.
Corollas

lavender or pink-purple;

not conventionally papilionaceous;

banner 3.4–4.2 mm, blade ovate, 1.3–1.6 × 1–1.2 mm; epistemonous petals attached high on stamen tube, just proximal to separation of filaments, blades 1.7–2.3 × 0.9–1.1 mm.

rose-purple;

not conventionally papilionaceous;

banner 5.2–6.2 mm, blade ovate, 2.1–2.6 × (1.6–)2–2.8 mm; epistemonous petals attached at separation of filaments, blades 2.6–3.2 × 0.9–1.3 mm.
Calyces

asymmetric, recessed opposite banner, 3.8–4.3 mm, silky-pilose;

tube 1.9–2.2 mm, with 0 glands between ribs, lobes triangular-aristate.

subsymmetric, 4–5 mm, pilose-tomentulose;

tube 2–2.5(–2.7) mm, prominently to indistinctly 10-ribbed, ± circular in cross section, with 0 glands between ribs, lobes lanceolate or adaxial pair ovate.
Legumes

2.5 mm, pilosulous distally, eglandular.

2.8–3.3 mm, pilosulous distally and dotted with small glands.
Seeds

1.9–2.3 mm.

2.2 mm.
Annual

herbs, erect, glabrate.

Principal

leaves 1.5–5.5 cm;

leaflets 3 or 5, blades linear-oblanceolate to -elliptic, (0.5–)1–3.7(–4) cm.

leaves 2–3.5 cm;

leaflets 5 or 7(or 9), blades linear to linear-oblanceolate or linear-elliptic, 8–18 mm.
Perennial

herbs, diffusely spreading, distally pilosulous on stems.
2n

= 14.

Dalea exigua

Dalea gattingeri
Phenology Flowering fall. Flowering late spring–summer.
Habitat Grassy slopes, roadsides, open oak, juniper, or pine woodlands. Cedar glades and barrens, on rocky, calcareous soils.
Elevation 1500–2400 m. (4900–7900 ft.) 150–500 m. (500–1600 ft.)
Distribution
from FNA
AZ; NM; Mexico (Chihuahua, Sonora)
[BONAP county map]
from FNA
AL; AR; GA; MO; TN
[WildflowerSearch map]
[BONAP county map]
Discussion

Dalea exigua occurs in southeastern Arizona (Cochise, Pima, and Santa Cruz counties) and adjacent southwestern New Mexico. A disjunct population occurs in McKinley County, New Mexico.

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

Dalea gattingeri is a narrow habitat specialist that can be locally common in suitable habitat.

(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. 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. 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
Synonyms Petalostemon exilis Kuhnistera gattingeri, Petalostemon gattingeri
Name authority Barneby: Mem. New York Bot. Gard. 27: 200. (1977) (A. Heller) Barneby: Mem. New York Bot. Gard. 27: 274. (1977)
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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