Flora of North America species comparison

simple or branched, 10–100 cm;

branches ascending to spreading, quadrangular, sharply ridged to winged distally, glabrate, sometimes scabrous.

simple or branched, 70–160 cm;

branches stiffly erect or arching-ascending, terete, faintly ridged, glabrous.

spreading, sometimes arching, ascending, or reflexed;

blade narrowly linear to linear-lanceolate, 10–70 x 0.3–6 mm, not fleshy, margins entire, adaxial surface scabrous;

axillary fascicles absent or shorter than subtending leaves.

strongly-ascending;

blade linear-lanceolate, 10–50 x 1–3 mm, fleshy, margins entire, adaxial surface with sessile, dome-shaped hairs;

axillary fascicles absent.

racemes, elongate, flowers 2 per node;

bracts shorter than, or longer than, or both shorter and longer than, pedicels.

racemes, elongate, flowers 1 or 2 per node, some flowers pseudoterminal;

bracts both shorter and longer than, or longer than, pedicels.

ascending-spreading, some upcurved distally, 6–25 mm, glabrous.

strongly ascending, 5–25 mm, glabrous.

calyx obconic to hemispheric, tube 2.3–5.5 mm, glabrous, lobes subulate to triangular-subulate, 0.3–2 mm;

corolla pink to rose purple, with 2 yellow lines and red spots in abaxial throat, 7–23 mm, throat pilose externally and glabrous within across bases and sinus of adaxial lobes, lobes: abaxial projected or spreading, adaxial projected over distal anthers, 2–8 mm, abaxial pilose externally, adaxial glabrous externally or pilose proximally;

proximal anthers perpendicular or oblique to filaments, distal perpendicular and vertical to filaments, pollen sacs 1–4 mm;

style exserted, 6.7–18 mm.

calyx narrowly campanulate, tube 4–6.5 mm, glabrous, lobes deltate, 0.5–0.9 mm;

corolla pink, without 2 yellow lines and with dark pink spots in abaxial throat, 25–35 mm, throat pilose externally and villous within across bases and sinus of adaxial lobes, lobes: abaxial spreading, adaxial reflexed-spreading, 6–14 mm, pilose or sparsely so externally;

proximal and distal anthers parallel to filaments, pollen sacs 2.8–5 mm;

style exserted, 15–28 mm.

globular, 4–7 mm.

subglobular to globular, 5–7 mm.

tan to brown, 0.5–1.5 mm.

dark brown to blackish, 1.1–1.5 mm.

= 28.

= 28.