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).

deciduous, rarely subpersistent, (usually distichous).

solitary flowers in axils of proximalmost leaves of leafy shoots of current year.

continuous with calyx tube.

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.

sepals 5, (ca. 2 mm);

petals 5, connate for nearly their entire lengths, corolla (closed in bud), globose to urceolate;

stamens 10, included;

anthers with conspicuous awns, tubules ca. 1-2 mm, with terminal pores.

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

5-locular (each locule containing 10-50 ovules).

ca. 1 mm.

(3-)10-35.

= 24, 48.