Baptisia perfoliata (L.) R.Br. x B. tinctoria (L.) R.Br.
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Authority
Isely, Duane. 1981. Leguminosae of the United States. III. Subfamily Papilionoideae: tribes Sophoreae, Podalyrieae, Loteae. Mem. New York Bot. Gard. 25 (3): 1-264.
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Family
Fabaceae
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Scientific Name
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Description
Species Description - Plant glabrous, wiry-stemmed. Lower leaves trifoliate, short-petioled; dwindling into the upper that are usually simple and sessile. Stipules persistent, small, asymmetric, some semiperfoliate or partially fused, foliaceous, or deciduous. Corolla yellow, ca. 13-15 mm. Ovules ca. 14. Legumes stipitate, broadly ovoid, 1-1.2 cm, thick-walled, dark brown, short-beaked.
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Discussion
? B. microphylla Nutt. (1834); ? Pericaulon microphyllum (Nutt.) Raf. (1837). B. stipulacea Ravenel (1856). B. microphylla var axillaris Canby (1879). B. perfoliata var lobata Canby (1879). B. microphylla auct. B. tinctoria x perfoliata. Ravenel (1856) collected these plants several times over a 30-year period during the last century and named them Baptisia stipulacea. From among his specimens, Canby (1879) named a variety each of B. perfoliata and B. microphylla, suggesting that the latter might be a hybrid. The Ravenel collections and a specimen of Nuttall’s were the only ones known to Larisey (1940a), who listed them under the earlier B. microphylla. The continuing existence of the populations has recently been verified by Alston and Turner (in herb), who reported “Both parents present in about equal numbers. The hybrids estimated at about 5-10% of the population” (Alston s.n., May 8, 1963).
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Distribution
Aiken, South Carolina. Sand hills, oak-pine woodland. April-May.
United States of America North America|