Flora of North America species comparison

erect, not fleshy, retrorsely short-strigose or glandular-hairy.

simple or with few ascending branches proximally, 6–30 cm, glandular-hairy.

cauline, opposite, sometimes some subopposite or alternate;

petiole absent;

blade not fleshy, not leathery, margins coarsely crenate-dentate.

4 or 5 pairs, ascending or divaricate, glandular-hairy;

blade ovate, 4–10(–12) x 2–7 mm, margins purple, apex acute.

terminal, spikelike racemes;

bracts present.

present;

bracteoles absent.

0.5–2 mm, glabrous.

sepals 4, calyx radially or bilaterally symmetric, not flattened laterally, tubular or campanulate, not accrescent in fruit, lobes triangular or lanceolate;

petals 5, corolla white with purple galea, yellow, or red-purple, strongly bilabiate, tubular-funnelform, abaxial lobes 3, adaxial 2, adaxial lip galeate;

stamens 4, didynamous, filaments glabrous, anther mucros equal or absent;

staminode 0;

ovary 2-locular, placentation axile;

stigma clavate, capitate, or +/- 2-lobed.

calyx tubular, 6–12 mm, tube 4–9.5 mm, hairy or glandular-hairy, lobes +/- equal, lanceolate, 2–4 x 1.5–2 mm, herbaceous, margins entire, apex acute, hairy or glandular-hairy;

corolla red-purple, 8–18 mm, glandular-hairy externally, throat with 2 yellow, ridgelike appendages, abaxial lobes spreading, adaxial projecting;

stamens included, pollen sacs yellow, 1–2 mm, mucronate distally, glabrous, dehiscing longitudinally in distal 3/4–4/5;

style 4–6 mm, glabrous;

stigma 2-lobed.

dehiscence loculicidal.

6–12 x 2–3 mm, glabrous.

150–450, white, reddish brown with age, ellipsoid or ellipsoid-oblong, wings absent.

0.3–0.5 mm, smooth.

racemes 2–18 cm;

flowers 1–12 pairs, interrupted proximally, dense distally, glandular-hairy;

peduncle absent;

bracts foliaceous, 7–9 x 6–7 mm, margins of distal bracts with 1 pair of teeth.

= 12.

= 48 (Europe).