Graptopetalum rusbyi
San Francisco River leatherpetal
with ascending, slender branches, 3–10 mm thick.
rosettes densely ces-pitose, 10–50-leaved, 2–6(–10) cm diam.;
blade green or reddish, rhombic-obovate to oblanceolate, 1.5–5 × 0.8–1.8 cm, rough (especially on margins and keel with peglike or subclavate papillae 0.05–0.1 mm and often narrower), apex with slender apiculum 1–3 mm, surfaces not glaucous.
mostly flat cymes;
floral stems 0.4–1.8 dm;
proximal leaves 2–18 mm;
branches mostly 2–5, circinate or not, 1–12-flowered.
mostly 3–8 mm.
(5–)6–7(–8)-merous;
corolla 14–21 mm diam., tube [0.7–]2–3.5 mm, lobes 7–10.5 × 1.2–2.5 mm;
pistils not hollowed near base, gradually narrowed to styles 1–1.5 mm.
= 62, 63, 64, 66, ca. 93, 124.
Graptopetalum rusbyi
Southward in Mexico, the corolla tube in Graptopetalum rusbyi tends to be shorter. The Mexican plants have been confused with G. occidentale Rose of Sinaloa (R. V. Moran 1984).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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