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Texas indigo

Carolina indigo

Habit Herbs, perennial, pubescent, glabrate, hairs crisped, curling. Herbs, perennial, herbaceous or suffrutescent, sparsely strigose, hairs appressed.
Stems

erect to procumbent, branched, 3–5 dm;

from stout rootstock.

erect or ascending, often bushy, branched, 7–15 dm.

Leaves

2.5–4.5 cm;

stipules subulate, 5–8 mm;

petiole 0.4–0.6 cm;

stipels absent;

petiolules 0.5–1 mm;

leaflets (3 or)5–9, usually opposite, rarely subopposite, blades obovate, 18–25 × 5–7 mm, terminal leaflet equal to or slightly larger than laterals, primarily wider distally, base cuneate, apex acute, mucronate, surfaces strigose abaxially, glabrous or glabrate adaxially.

2–8.5 cm;

stipules narrowly triangular, 0.5–1 mm;

petiole 0.5–1.3 cm;

stipels 0.5–1 mm;

petiolules 1–1.3 mm;

leaflets (7 or)9–13, ± opposite, blades obovate to oblanceolate, 8–20(–25) × 2–12 mm, base cuneate, apex broadly acute or obtuse, mucronate, surfaces strigulose, pale abaxially.

Racemes

20–30+-flowered, lax, 3–10 cm.

15–40-flowered, lax, 4–12 cm.

Peduncles

2–5 cm.

1–2 cm.

Pedicels

1–1.5 mm.

1–2(–3) mm.

Flowers

8–10 mm;

calyx 3–4 mm, lobes narrowly long-triangular;

corolla reddish.

6–9 mm;

calyx 1.5–2 mm, lobes deltate;

corolla dark pinkish buff to ochroleucous.

Legumes

gray-brown, deflexed, cylindric, straight, 18–27 mm, leathery, glabrate.

dark brown, deflexed, ovoid or oblong, straight, 7–9 mm, woody, glabrate or sparsely strigulose.

Seeds

7 or 8, yellowish green becoming brown in age, often with brown mottling, cuboid.

2 or 3, yellowish tan, bluntly ellipsoidal.

2n

= 32.

Indigofera texana

Indigofera caroliniana

Phenology Flowering Apr–Jun. Flowering Jun–Jul.
Habitat Granite-based soils. Pinelands, pine-palmetto, scrub oak communities, sandhills, hammocks, roadsides.
Elevation 200–700 m. (700–2300 ft.) 0–200 m. (0–700 ft.)
Distribution
from FNA
TX
from FNA
AL; FL; GA; LA; NC; SC
[WildflowerSearch map]
[BONAP county map]
Discussion

Indigofera texana is known only from central Texas, in Blanco, Burnet, Gillespie, Kerr, Llano, Mason, and Menard counties.

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

Indigofera caroliniana Walter is an illegitimate later homonym that pertains here; the name by Walter is also the basis of Anila caroliniana.

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

Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Indigofera Fabaceae > subfam. Faboideae > Indigofera
Sibling taxa
I. caroliniana, I. colutea, I. decora, I. hirsuta, I. kirilowii, I. lindheimeriana, I. miniata, I. oxycarpa, I. pilosa, I. sphaerocarpa, I. spicata, I. suffruticosa, I. tinctoria
I. colutea, I. decora, I. hirsuta, I. kirilowii, I. lindheimeriana, I. miniata, I. oxycarpa, I. pilosa, I. sphaerocarpa, I. spicata, I. suffruticosa, I. texana, I. tinctoria
Synonyms I. miniata var. texana Anila caroliniana, I. disperma
Name authority Buckley: Proc. Acad. Nat. Sci. Philadelphia 13: 451. (1862) Miller: Gard. Dict. ed. 8, Indigofera no. 3. (1768)
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