Flora of North America species comparison

erect, not fleshy, hirsutulous.

slender, 30–55 cm.

cauline, in whorls of 3;

petiole absent;

blade not fleshy, not leathery, margins entire.

blade filiform-linear, 30–60 x 2–3 mm, proximals longer than distals.

terminal, racemes;

bracts present.

racemes of paired flowers, occupying to 2/3 height of stem, bracts resembling foliage leaves.

present;

bracteoles absent.

11–30 mm.

sepals 5, calyx nearly radially symmetric, broadly campanulate, lobes deltate;

petals 5, corolla yellow, bilabiate, subrotate, abaxial lobes 3, adaxial 2;

stamens 4, didynamous, filaments glabrescent proximally, villous distally;

staminode 0;

ovary 2-locular, placentation axile;

stigma clavate.

10–26 x 7–16 mm;

calyx 3–5 x 4–7 mm, lobes broadly deltate, 1–1.5 mm;

corolla abruptly inflating just beyond calyx, 24–30 mm diam., externally pubescent, internally glabrous, lobes orbiculate;

filaments 8–11 mm, anthers included, base bluntly sagittate, glabrous, locules equal, 5 mm;

ovary ovoid, 4–5 x 2–4 mm;

style incurving at maturity, 5–6 mm.

dehiscence loculicidal.

with persistent calyces, globular-ovoid, 8–10 x 5–8 mm.

100+, dark brown, ellipsoid, wings absent or present.

reticulate, 2 mm.