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 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 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.

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

filaments glabrous or hairy.

blue, dull purplish black, or black, sometimes glaucous, 8–10 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, 48.

= 24.