FNA: Dalea foliosa vs. Dalea emarginata

	Dalea foliosa	Dalea emarginata
	leafy prairie-clover	wedgeleaf prairie clover
Stems	3–8 dm, eglandular.	(1.5–)2–6 dm, with scattered, small, raised glands distally.
Inflorescences	spikes, densely flowered, not involucrate, 8–10 mm diam.; axis not visible, 1.5–4.5 cm; bracts persistent through anthesis, 4.8–5.4 mm.	spikes, densely flowered, inconspicuously involucrate (lowest bracts not subtending flowers), 8.5–10.5(–11) mm diam.; axis not visible, 1–4(–4.5) cm; bracts persistent through anthesis, 1–2.5 mm.
Peduncles	0–2 cm.	(6–)10–35(–40) cm.
Stamens	5, 5.4–7.2 mm, filaments distinct to 2.7–3.7 mm, anthers 0.6–0.9 mm.	5, sometimes with vestiges of alternate filaments, 3.8–4.6 mm, filaments distinct to 0.9–1.2 mm, anthers 0.5 mm.
Corollas	lavender-purple; not conventionally papilionaceous; banner 5.2–6 mm, blade ovate to suborbiculate, 2.1–2.5 × 2.6–3.2 mm; epistemonous petals attached at separation of filaments, blades 2.7–3 × 0.8–1 mm.	magenta-purple; not conventionally papilionaceous; banner 3.8–4.4 mm, blade ovate, 1.8 × 1.2 mm; epistemonous petals attached at or abaxial pair just proximal to filament separation, blades 1.6–2 × 0.5–0.9 mm.
Calyces	subsymmetric, 3.8–4.4 mm, glabrous or lobes sometimes pilosulous; tube 2.4–2.7 mm, with 0 glands between ribs, lobes triangular-lanceolate or adaxial pair ovate-triangular.	asymmetric, recessed opposite banner, 3–4.2 mm, densely pilosulous; tube 1.8–2.2 mm, with 4–7 blister glands between ribs, lobes ovate.
Legumes	2.5–3 mm, glabrous, dotted with small glands distally.	2.4–2.8 mm, pilosulous distally and gland-dotted.
Seeds	1.8–2 mm.	1.6–1.9 mm.
Perennial	herbs, erect, glabrous proximal to inflorescences.
Principal	leaves 3–5.5 cm; leaflets 19–29(or 31), blades oblong-oblanceolate to -elliptic, 5–10 mm.	leaves (1–)1.5–3.5 cm; leaflets (5–)11–17, blades oblong-oblanceolate or obovate, 4–9 mm.
Annual		herbs (sometimes overwintering), erect, ± glabrous proximal to inflorescence.
2n	= 14.

	Dalea foliosa	Dalea emarginata
Phenology	Flowering late summer–fall.	Flowering fall–winter.
Habitat	Limestone glades, prairie remnants.	Beaches, dunes, sandy soils.
Elevation	100–300 m. (300–1000 ft.)	0–200 m. (0–700 ft.)
Distribution	AL; IL; TN [WildflowerSearch map] [BONAP county map]	LA; TX; Mexico (Tamaulipas, Veracruz) [BONAP county map]
Discussion	Dalea foliosa is rare and in 1991 was designated federally as endangered. At that time, there were 14 known populations, only four of which had state or Nature Conservancy protection. The species is in the Center for Plant Conservation’s National Collection of Endangered Plants. (Discussion copyrighted by Flora of North America; reprinted with permission.)	Dalea emarginata was first described under Petalostemon but was rejected from that genus by D. K. Wemple (1970) because of its annual habit. R. C. Barneby (1977c) considered it to be taxonomically isolated within Dalea. Adaxial surfaces of the leaflets often become a remarkable blue-green in drying, a trait observed also in several other daleas that were placed in Petalostemon and in the evidently distantly related yellow-petaled D. nana. In Texas, D. emarginata is known from the southern half of the state, east of the Big Bend region. (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. 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. 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
Synonyms	Petalostemon foliosus	Petalostemon emarginatus
Name authority	(A. Gray) Barneby: Mem. New York Bot. Gard. 27: 245. (1977)	(Torrey & A. Gray) Shinners: Field & Lab. 17: 84. (1949)
Web links	Local Web sites: IL Wildflowers WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local Web sites: LA Plants WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Dalea emarginata

leafy prairie-clover

wedgeleaf prairie clover

Stems

3–8 dm, eglandular.

(1.5–)2–6 dm, with scattered, small, raised glands distally.

Inflorescences

spikes, densely flowered, not involucrate, 8–10 mm diam.;

axis not visible, 1.5–4.5 cm;

bracts persistent through anthesis, 4.8–5.4 mm.

spikes, densely flowered, inconspicuously involucrate (lowest bracts not subtending flowers), 8.5–10.5(–11) mm diam.;

axis not visible, 1–4(–4.5) cm;

bracts persistent through anthesis, 1–2.5 mm.

Peduncles

0–2 cm.

(6–)10–35(–40) cm.

Stamens

5, 5.4–7.2 mm, filaments distinct to 2.7–3.7 mm, anthers 0.6–0.9 mm.

5, sometimes with vestiges of alternate filaments, 3.8–4.6 mm, filaments distinct to 0.9–1.2 mm, anthers 0.5 mm.

Corollas

lavender-purple;

not conventionally papilionaceous;

banner 5.2–6 mm, blade ovate to suborbiculate, 2.1–2.5 × 2.6–3.2 mm; epistemonous petals attached at separation of filaments, blades 2.7–3 × 0.8–1 mm.

magenta-purple;

not conventionally papilionaceous;

banner 3.8–4.4 mm, blade ovate, 1.8 × 1.2 mm; epistemonous petals attached at or abaxial pair just proximal to filament separation, blades 1.6–2 × 0.5–0.9 mm.

Calyces

subsymmetric, 3.8–4.4 mm, glabrous or lobes sometimes pilosulous;

tube 2.4–2.7 mm, with 0 glands between ribs, lobes triangular-lanceolate or adaxial pair ovate-triangular.

asymmetric, recessed opposite banner, 3–4.2 mm, densely pilosulous;

tube 1.8–2.2 mm, with 4–7 blister glands between ribs, lobes ovate.

Legumes

2.5–3 mm, glabrous, dotted with small glands distally.

2.4–2.8 mm, pilosulous distally and gland-dotted.

Seeds

1.8–2 mm.

1.6–1.9 mm.

Perennial

herbs, erect, glabrous proximal to inflorescences.

Principal

leaves 3–5.5 cm;

leaflets 19–29(or 31), blades oblong-oblanceolate to -elliptic, 5–10 mm.

leaves (1–)1.5–3.5 cm;

leaflets (5–)11–17, blades oblong-oblanceolate or obovate, 4–9 mm.

Annual

herbs (sometimes overwintering), erect, ± glabrous proximal to inflorescence.

= 14.

Dalea emarginata

Phenology

Flowering late summer–fall.

Flowering fall–winter.

Habitat

Limestone glades, prairie remnants.

Beaches, dunes, sandy soils.

Elevation

100–300 m. (300–1000 ft.)

0–200 m. (0–700 ft.)

Distribution

AL; IL; TN

[WildflowerSearch map]

[BONAP county map]

LA; TX; Mexico (Tamaulipas, Veracruz)

[BONAP county map]

Discussion

Dalea foliosa is rare and in 1991 was designated federally as endangered. At that time, there were 14 known populations, only four of which had state or Nature Conservancy protection. The species is in the Center for Plant Conservation’s National Collection of Endangered Plants.

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

Dalea emarginata was first described under Petalostemon but was rejected from that genus by D. K. Wemple (1970) because of its annual habit. R. C. Barneby (1977c) considered it to be taxonomically isolated within Dalea. Adaxial surfaces of the leaflets often become a remarkable blue-green in drying, a trait observed also in several other daleas that were placed in Petalostemon and in the evidently distantly related yellow-petaled D. nana. In Texas, D. emarginata is known from the southern half of the state, east of the Big Bend region.

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

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. 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. 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

Synonyms

Petalostemon foliosus

Petalostemon emarginatus

Name authority

(A. Gray) Barneby: Mem. New York Bot. Gard. 27: 245. (1977)

(Torrey & A. Gray) Shinners: Field & Lab. 17: 84. (1949)

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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Flora of North America species comparison

Dalea foliosa

Dalea emarginata

Dalea foliosa

Dalea emarginata