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.

branched, 15–70 cm;

branches laxly and widely spreading, proximal arching upward, subterete proximally, quadrangular, with siliceous ridges and wings on angles distally, glabrous, sometimes 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 to spreading-ascending;

blade linear, 8–30 x 0.5–2.3(–3) mm, not fleshy, margins entire, siliceous, adaxial surface finely scabrous;

axillary fascicles absent.

racemes, elongate, flowers 2 per node;

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

racemiform, with lateral branches bearing solitary flowers, flowers 1 per node;

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

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

spreading to spreading-ascending or arching, 3–14 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 campanulate, tube 3–5.5 mm, glabrous, lobes lanceolate, 1.3–2.5 mm;

corolla pale pink (sometimes nearly translucent), with 2 yellow or pale lines and pale purple spots in abaxial throat, 8–12 mm, throat pilose externally and villous within across bases and sinus of adaxial lobes, lobes: abaxial spreading, adaxial reflexed-spreading, 3–5 mm, glabrous externally;

proximal anthers parallel to filaments, distal perpendicular or oblique to filaments, pollen sacs 0.8–1.5 mm;

style exserted, 3–5 mm.

globular, 4–7 mm.

obovoid, 4–6(–7) mm.

tan to brown, 0.5–1.5 mm.

tan to pale brown, 0.8–1 mm.

= 28.