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.

erect, elongate main stem overtopping lateral branches, simple or branched, 5–75 cm;

branches spreading-ascending to upward arching, terete, ridged proximally, obtusely quadrangular, ridged distally, +/- fleshy, 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.

spreading;

blade linear to linear-elliptic, 10–40 x 0.5–3.5 mm, fleshy, wrinkled when dry, margins entire, adaxial surface with sessile, dome-shaped hairs;

axillary fascicles absent or shorter than subtending leaves.

racemes, elongate, flowers 2 per node;

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

racemes, elongate, flowers 2 per node, distal nodes usually widely spaced;

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

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

spreading-ascending, 2.5–11 mm, glabrous, +/- fleshy.

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 obconic to hemispheric, tube 2–5 mm, glabrous, lobes deltate, 0.7–2 mm, fleshy;

corolla pink to rosy pink, with 2 yellow lines and red spots in abaxial throat, 7.5–21 mm, throat pilose externally and villous, glabrate, or glabrous within across bases and sinus of adaxial lobes, lobes: abaxial spreading, adaxial reflexed, 2.5–6 mm, abaxial pilose externally, adaxial glabrous externally;

proximal anthers parallel to filaments, distal parallel or perpendicular to filaments, pollen sacs 1.2–2.3 mm;

style included or exserted, 6–13 mm.

globular, 4–7 mm.

globular, 5–7 mm.

tan to brown, 0.5–1.5 mm.

dark brown, 0.6–1.6 mm.

= 28.

= 28.