Baptisia cinerea
Baptisia arachnifera
grayhairy wild indigo
cobwebby wild indigo
blackening upon drying, petiolate;
stipules mostly deciduous, lanceolate, 10–30 mm;
petiole 5–14 mm;
leaflets 3, blades oval to broadly oblanceolate.
sessile;
stipules absent or appearing so;
leaflet 1, blade broadly ovate, surfaces with cobwebby hairs.
5–20-flowered, axillary, secund, bracteate, bracts deciduous.
8–12-flowered, terminal, bracteate.
4–8 mm.
2 mm.
21–29 mm;
calyx 6–8 mm, glabrous or puberulent;
corolla yellow, 20–28 mm.
11–13 mm;
calyx 4–5 mm, pubescent;
corolla yellow, 9–11 mm.
ascending, ovoid, 20–30 × 6–10 mm, papery to ± woody.
ascending, suborbicular to broadly lanceoloid, 8–12 × 6–9 mm, beaks attenuate, somewhat woody, tomentose.
2–4.
2–4.
Baptisia cinerea
Baptisia arachnifera
Baptisia cinerea closely resembles B. bracteata; the floral bracts in B. cinerea are deciduous (versus persistent in B. bracteata), pedicels are shorter (4–8 versus 10–18 mm), legumes are smaller (2–3 versus 3–4 cm) with appressed (versus spreading) hairs, and leaflets are larger and readily blacken upon drying.
Baptisia cinerea and B. bracteata are essentially allopatric. Hybrids between B. cinerea and other species of Baptisia have not been reported; occasional hybrids between B. cinerea and others (for example, B. lactea) would not be surprising.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Baptisia arachnifera is known only from Brantley and Wayne counties.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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