Baptisia lactea
Baptisia perfoliata
western white indigo
cat-bells
petiolate;
stipules caducous, lanceolate, 2–8 mm;
petiole 5–15 mm;
leaflets 3, blades obovate.
sessile;
stipules absent;
leaflet 1, blade perfoliate, broadly ovate-elliptic.
8–20-flowered, terminal, stiffly erect, ebracteate.
1-flowered, axillary, ebracteate.
3–10 mm.
absent.
18–25 mm;
calyx 7–8 mm, glabrous;
corolla white, 16–23 mm.
15–17 mm;
calyx 5–7 mm, glabrous;
corolla bright yellow, 13–15 mm.
black in age, ascending to spreading-pendent, plump, ellipsoid-cylindric, 23–50 × 10–30 mm, smooth.
ascending, ovoid, 10–15 × 8–12 mm, abruptly beaked, woody.
20–30.
2–4.
= 18.
Baptisia lactea
Baptisia perfoliata
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.)
Baptisia perfoliata forms hybrids with B. alba, B. lanceolata, and B. tinctoria; F1 hybrids with the latter are called B. × microphylla Nuttall.
(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 |
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