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.

persistent.

terminal, racemes, on lateral twigs, on previous year’s shoots or older woody stems.

articulated with calyx tube.

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.

sepals 5;

petals 4–5, connate for nearly their entire lengths, corolla cylindric or urceolate;

stamens 10, included;

anthers ± without awns, tubules 1–1.5 mm, with terminal pores.

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

[4-], 5-, [pseudo 8-, or pseudo 10]-locular.

ca. 1 mm.

10–25, (ca. 1 mm).

= 24.