Flora of North America species comparison

simple or branched, 5–30(–47) cm;

branches spreading-ascending, obtusely quadrangular proximally to quadrangular with wings on angles distally, glabrous or sparsely scabridulous.

simple or branched, 7–120 cm;

branches ascending, spreading, or arching, quadrangular-ridged to winged distally, glabrate or scabridulous to sparsely scabrous, especially on angles or also on faces near nodes.

spreading;

blade linear-elliptic to elliptic, 6–40 x 0.8–5 mm, not fleshy, margins entire, abaxial midvein sparsely scabrous, adaxial surface scabrous;

axillary fascicles absent or shorter than subtending leaves.

spreading to ascending;

blade narrowly linear to linear or linear-lanceolate, 7.5–50 x 0.5–4(–5) mm, not fleshy, margins entire, abaxial midvein sometimes scabrous, adaxial surface scabrous;

axillary fascicles absent or shorter than subtending leaves.

racemes, flowers 2 per node;

bracts longer than pedicels.

racemes, short to elongate, flowers 1 or 2 per node;

bracts longer than pedicels.

spreading-ascending, (0.8–)1.5–5.3(–6.5) mm, glabrous.

spreading-ascending, 1–5(–6) mm, glabrous, rarely scabrous.

calyx hemispheric-campanulate, tube 1.5–3 mm, glabrous, lobes triangular-lanceolate, 1.1–4(–5) mm, unequal, mid adaxial shortest;

corolla pale to dark pink, with 2 yellow lines and red spots in abaxial throat, or lines faint or absent, (8–)10–15 mm, throat pilose externally and villous within across bases and sinus of adaxial lobes, lobes: abaxial slightly spreading to projected, adaxial slightly spreading or projected distal to corolla mouth, 1.6–6 mm, unequal, pilose or densely so externally;

proximal and distal anthers parallel to filaments, pollen sacs 1–2 mm;

style included, (3–)4–7.5 mm.

calyx tubular-campanulate to hemispheric, tube (2–)3–5 mm, glabrous, rarely scabrous on major veins, lobes triangular, lanceolate, or triangular-subulate, not keeled, 0.8–3(–5) mm;

corolla pink to rosy pink, with 2 yellow lines and red spots in abaxial throat or these pale or absent, 9–36 mm, throat pilose externally and villous within across bases and sinus of adaxial lobes, lobes: abaxial spreading to reflexed or projected to somewhat spreading (small-flowered plants), adaxial erect to reflexed, 2.5–11 mm, pilose externally;

proximal anthers parallel to filaments, distal oblique or perpendicular to filaments (parallel in small-flowered plants), pollen sacs 0.9–4.5 mm;

style included or exserted, 6.5–21 mm.

globular, 5–6 mm.

globular, 4–6(–7) mm.

brown, 0.9–1.5 mm.

dark brown, 0.7–1.4 mm.

= 28.

= 28.