Flora of North America species comparison

erect, glabrous or puberulent.

1–4, (5–)10–18(–25) cm, glabrous or sparsely glandular-pubescent.

basal and cauline, cauline smaller, opposite, sometimes alternate distally;

petiole present or absent;

blade not fleshy, ± leathery or not, margins entire.

basal and proximal cauline, blade oblanceolate, (8–)25–90 × (1–)3–13 mm, surfaces glabrous;

cauline 1–4 pairs, blade narrowly lanceolate to linear, 2–22 × 1–3 mm.

1–7 cm, verticillasters 4–10, interrupted, glandular-pubescent;

bracts lanceolate, proximal ones 3–9 × 1–3 mm.

terminal, spikelike, secund racemes;

bracts present.

present or absent;

bracteoles absent.

0–7 mm, glandular-pubescent.

bisexual;

sepals 5, proximally connate, calyx radially symmetric, cylindric to funnelform, lobes triangular to narrowly ovate;

corolla greenish white, creamy white, or pale lavender, bilaterally symmetric, bilabiate, tubular-funnelform, tube base not spurred or gibbous, throat not densely pilose internally, lobes 5, abaxial 3, adaxial 2;

stamens 4, proximally adnate to corolla, didynamous, filaments glabrous;

staminode 1, ± filiform;

ovary 2-locular, placentation axile;

stigma capitate.

calyx tube 1–2 mm, glandular-pubescent, lobes triangular to narrowly ovate, 2.5–3 × 1.4–2 mm;

corolla pale lavender, 9–14 mm, glabrous externally, palate and proximal parts of abaxial limb glandular-pubescent, hairs to 0.1 mm, tube 1–2 mm, pollen sacs 0.3–0.4 mm, explanate;

staminode 4–5 mm;

style 6–7 mm.

capsules, dehiscence septicidal.

6.5–9 × 4–5 mm.

10–20, tan or brown, ellipsoid to fusiform or ellipsoid-disciform, wings present.

brown, elliptic-disciform, 2.4–3 mm.

= 8.