Nissolia laxior (B.L.Rob.) Rose
-
Authority
Rudd, Velva E. 1956. A revision of the genus Nissolia. Contr. U. S. Natl. Herb. 32: 173-206.
-
Family
Fabaceae
-
Scientific Name
-
Type
Type locality: "Barranca of Beltran," Jalisco, Mexico. Type collected by Pringle (No. 4379), cited below.
-
Description
Description - Climbing vine, the stems crisp-pubescent, glabrate, usually beset with glandular setae; stipules broadly lanceate, acute to acuminate, entire or sometimes glandular-denticulate, about 7-10 mm. long, (1.5-) 2-3 mm. wide at base, the upper surface subglabrous, the lower surface pubescent, usually densely white-tomentose, especially toward the apex; leaves 5-10 cm. long: leaflets ovate to elliptic, 15-50 mm. long, 10-25 mm. wide, acute to obtuse, mucronulatc, the base obtuse, the upper surface subglabrous, the lower moderately crisp-pubescent to subglabrous; inflorescences fasciculate, about 8-20-flowered, the pedicels 8-13 mm. long; flowers 9-11 mm. long, the standard straight or slightly recurved; cal^yx 6-7 mm. long, subglabrous to pubescent, especially along the margin, sometimes beset with glandular setae, the tube 2.5-3 mm. long, 2.5-3 mm. in diameter, the teeth subulate, 3-4 mm. long; mature fruit and seed not seen.
-
Discussion
The broadly lanceate stipules, 2-3 mm. wide at the base, usually tomentulose beneath, serve as ready identification for this species. In general, N. laxior appears to be closely related to N. schottii, N. montana, and N. pringlei rather than to N, confertiflora ( =N. hirsuia), to which it was originally referred.