Baptisia lactea
Baptisia lanceolata
western white indigo
gopher weed
petiolate;
stipules caducous, lanceolate, 2–8 mm;
petiole 5–15 mm;
leaflets 3, blades obovate.
subsessile or petiolate;
stipules caducous, small;
petiole 0.1–12 mm mid stem;
leaflets 3, blades obovate to oblanceolate.
8–20-flowered, terminal, stiffly erect, ebracteate.
1–5-flowered, terminal, bracteate.
3–10 mm.
2–10 mm.
18–25 mm;
calyx 7–8 mm, glabrous;
corolla white, 16–23 mm.
20–27 m;
calyx 8–10 mm, pubescent;
corolla yellow, 19–25 mm.
black in age, ascending to spreading-pendent, plump, ellipsoid-cylindric, 23–50 × 10–30 mm, smooth.
ascending, suborbicular to lanceoloid, 10–25 × 10–12 mm, woody.
20–30.
10–40.
= 18.
Baptisia lactea
Baptisia lanceolata
Varieties 2 (2 in the flora).
Baptisia lactea forms hybrids with B. lanceolata, B. nuttalliana, B. sphaerocarpa (B. × sulphurea Engelmann), and B. tinctoria (B. × deamii Larisey).
Peripheral intergradation between var. lactea and var. pendula occurs (hence their treatment as varieties); they are not known to co-occur at present.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Varieties 2 (2 in the flora).
Occasional plants in regions of contact between varieties of Baptisia lanceolata may be difficult to identify. D. Isely (1981) recognized isolated populations from central Florida as belonging to var. elliptica; these appear to belong to var. lanceolata, although they may be relics of ancestral hybridization and/or gene flow between the two.
Baptisia lanceolata hybridizes with B. perfoliata.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Legumes 10–15 mm wide; mature stipes about as long as calyces; c United States. | var. lactea |
1. Legumes 15–30 mm wide; mature stipes much longer than calyces; se United States. | var. pendula |
1. Leaflet blades to 15 mm wide; petioles 0.1–2 mm mid stem; ne Florida, Georgia, South Carolina. | var. lanceolata |
1. Leaflet blades 16+ mm wide; petioles 4–12 mm mid stem; Alabama, westernmost Florida, Georgia. | var. elliptica |
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