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gentry's indigobush

Gattinger prairie clover, purpletassels

Habit Shrubs or subshrubs, relatively erect, sparsely pilosulous or glabrous proximal to inflorescences.
Stems

3–6(–12) dm, glandular-tuberculate distally.

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

Inflorescences

spikes, relatively densely flowered, not involucrate, 11–15 mm diam.;

axis not to partially visible, 1–2(–2.5) cm;

bracts persistent or deciduous, (2.5–)3–5.5 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

(0–)0.2–2.2 cm.

0.5–2.5 cm.

Stamens

10, 8–9.5 mm, filaments distinct to 2.6–3.5 mm, anthers 0.7–1 mm.

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

Corollas

bicolored, banner whitish, reddish in age, epistemonous petals rose-purple; papilionaceous;

banner 6.2–6.7 mm, blade flabellate, 3–3.5 × 3.9–4.2 mm; epistemonous petals attached proximal to middle of stamen tube;

wings 4.9–5.8 × 2.2–3 mm;

keel connate valvately, blades 5–6.2 × 3.2–4.4 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, 5.2–7.8 mm, sparsely pilosulous;

tube 2.5–3.1 mm, with 0–2 glands between ribs, lobes lanceolate-acuminate, each with several elongated, pricklelike glands (gland spurs).

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

3 mm, pilosulous distally, eglandular.

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

Seeds

1.5 mm.

2.2 mm.

Principal

leaves 3–6 cm;

leaflets 19–35, blades oblong-elliptic to obovate, 2.5–8 mm.

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 tentaculoides

Dalea gattingeri

Phenology Flowering spring (fall). Flowering late spring–summer.
Habitat Rocks in canyons, rocky volcanic slopes in desert mountains. Cedar glades and barrens, on rocky, calcareous soils.
Elevation 900–2200 m. (3000–7200 ft.) 150–500 m. (500–1600 ft.)
Distribution
from FNA
AZ; Mexico (Sonora)
[BONAP county map]
from FNA
AL; AR; GA; MO; TN
[WildflowerSearch map]
[BONAP county map]
Discussion

Dalea tentaculoides occurs in Santa Cruz and Pima counties. It is in the Center for Plant Conservation’s National Collection of Endangered Plants.

(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. 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. 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 Kuhnistera gattingeri, Petalostemon gattingeri
Name authority Gentry: Madroño 10: 238, plates 18, 19. (1950) (A. Heller) Barneby: Mem. New York Bot. Gard. 27: 274. (1977)
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