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 usually pale green or glaucous abaxially, green adaxially, elliptic, 20–80 × 9–32 mm, ± membranous, margins usually entire, inrolled on more-coriaceous blades, surfaces glabrous or densely hairy, rarely glandular.

2–7-flowered, sometimes flowers solitary.

subtended by leaflike bract (ca. as long as flower).

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.

corolla lobes spreading at anthesis, white to greenish white, sometimes purple veined, 4–8 mm;

filaments glabrous or hairy.

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

green, yellow-green, yellow, purple, or black, often lightly glaucous, 7–18 mm diam., sometimes hairy and sparsely glandular.

ca. 1 mm.

= 24.

= 24.