Flora of North America species comparison

blades pale green or glaucous abaxially, slightly darker pale green adaxially, ovate to elliptic, rarely obovate, 25–39 × 16–20 mm, margins entire to obscurely serrate, abaxial surface glabrous, eglandular (sometimes hairy or glandular along midvein), adaxial surface usually glabrous (sometimes hairy and/or glandular).

blades pale green, glaucous, obovate to oblong, 22–40 × 12–20 mm, coriaceous, surfaces glabrous or glandular-hairy abaxially, glabrous and lustrous adaxially.

bracts ± persistent.

slender, 0.8–1.2 cm.

calyx pale green or glaucous, lobes vestigial or absent, glabrous;

corolla pink, bronze-pink, or greenish white, globose, sometimes urceolate, 5–7 × 4–5 mm, thin, glaucous;

filaments glabrous or pilose basally.

calyx 21–29 × 7–13 mm;

corolla white, 3–5 mm;

filaments ciliate.

blue, dull purplish black, or black, sometimes glaucous, 8–10 mm diam.

shiny black, 7–9 mm diam. 2n = 24.

ca. 1 mm.

= 24, 48.