Monographs Details: Sullivantia hapemanii (J.M.Coult. & Fisher) J.M.Coult.
Authority: Soltis, Douglas E. 1991. A Revision of Sullivantia (Saxifragaceae). Brittonia. 43 (1): 27-53.
Description:Species Description - Plants 5-60 cm in height, not stoloniferous. Stem erect. Basal leaf blades 1-11 cm broad, incisely 5-13-lobed for 1/4-1/2 the blade length; lobes cuneate to subovate or subovate and once or twice dentately to subcrenately toothed. Stipules mem- branous and inconspicuous; margins entire or erose with a few long bristles to rarely sublaciniate. Inflorescence erect, primary and higher order branches per- pendicular to central axis. Calyx narrowly turbinate-campanulate, 1.8-3.3 mm long, 1.2-2.5 mm wide; lobes triangular to triangular-ovate, 0.6-1.7 mm long, 0.6-1.2 mm wide. Petals 2.5-3.1 mm long; blade ovate and abruptly clawed to ovate-lanceolate and gradually narrowed into claw, 1-1.8 mm wide; claw 1/5- 1/4 total petal length. Ovary at least 4/5 inferior. Capsules at maturity cylindric to cylindric-ovate, 3.25-8 mm long, 1.5-4 mm wide. Seeds dark red-brown, 0.9- 1.7 mm long, 0.3-0.6 mm wide, the main body (not including winged-margin) 0.7-1 mm long. 2n = 14.
Key to varieties of Sullivantia hapemanji
1 Ovary ca as long as broad at anthesis; fruit less than 2.5 times longer than broad at maturity (usually ca 2 times longer than broad); Laramie and Big Horn mts., Wyoming and Montana ...2a.var.hapemanii
1 Ovary ca 2 times longer than broad at anthesis; fruit at least 2.5 times longer than broad at maturity; western slope of Rocky Mts., west-central Colorado ... 2b. var. purpusii