Flora of North America species comparison

erect, not fleshy, glabrous, hairy on 2 opposite sides.

sometimes with black streaks, simple or slightly branched, 5–20(–55) cm.

cauline, opposite;

petiole present or absent;

blade not fleshy to +/- fleshy, not leathery, margins coarsely toothed distally.

blade ovate-oblong to linear-lanceolate or +/- oblong, (2–)5–15 mm wide, margins crenate-serrate or coarsely dentate.

triangular, glabrous or puberulent, sometimes scabrid, teeth bristle-tipped or not, basal teeth slightly longer than others.

terminal, racemes, +/- secund;

bracts present.

present;

bracteoles absent.

sepals 4, calyx bilaterally symmetric, flattened laterally, ovate to suborbiculate, accrescent in fruit, lobes deltate;

petals 5, corolla yellow or yellowish [bronze to bluish], compressed, strongly bilabiate, narrowly campanulate, abaxial lobes 3, adaxial 2, adaxial lip galeate, ovate, obtuse, entire, with subapical tooth on each side;

stamens 4, didynamous, filaments lanate;

staminode 0;

ovary 2-locular, placentation axile;

stigma capitate.

13–15 mm;

tube straight;

throat +/- open;

teeth of galea (0.4–)0.6–1 mm.

13–16 mm, glabrous, scabrid, or puberulent.

dehiscence loculicidal longitudinally.

10–12 mm.

2–10[+], brown, kidney-shaped, flattened, wings present, absent in some R. major.

8–10, 4 mm.

= 11.