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, 50–80 cm;

branches ascending, subterete, ridged proximally, quadrangular-ridged distally, glabrous or scabridulous.

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-ascending, widely spaced;

blade linear to linear-filiform, 10–30 x 0.5–1.4 mm, not fleshy, margins entire, adaxial surface scabrous;

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, nodes widely spaced;

bracts much longer than pedicels.

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

erect-ascending, 0.5–4(–5) 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 funnelform-obconic, tube 4–6 mm, glabrous, lobes triangular-subulate, keeled, 1.3–2.8 mm;

corolla pink to rose pink, with 2 yellow lines and dark purple spots in abaxial throat, 15–23 mm, throat pilose externally and villous within across bases and sinus of adaxial lobes, lobes: abaxial spreading, adaxial reflexed-spreading, 6–7(–8) mm, abaxial pilose externally, adaxial glabrous externally;

proximal anthers parallel to filaments, distal perpendicular to filaments, pollen sacs 2–3 mm;

style exserted, 10–16 mm.

globular, 4–7 mm.

globular, 4–5(–6) mm.

tan to brown, 0.5–1.5 mm.

black, 0.6–1 mm.

= 28.

= 28.