Flora of North America species comparison

blades green, usually oblanceolate, sometimes obovate or narrowly elliptic, 10–30 × 3–12 mm, margins usually serrulate from apex to at least mid blade, surfaces usually glandular abaxially, usually glabrous adaxially.

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, lobes vestigial, glabrous;

corolla white, white with pink striping, or pink, cylindric-urceolate to globose, 4–7 × 3–5 mm, thin, glaucous;

filaments glabrous.

calyx 21–29 × 7–13 mm;

corolla white, 3–5 mm;

filaments ciliate.

usually blue, glaucous, rarely dull black, 5–9 mm diam.

shiny black, 7–9 mm diam. 2n = 24.

ca. 1 mm.

= 24.