Flora of North America species comparison

ascending to erect, 32–100 cm, glabrous, slightly glaucous.

glabrous or retrorsely hairy, glaucous or not.

glabrous, not glaucous;

basal and proximal cauline 40–80(–150) × 14–40(–60) mm, blade spatulate to obovate, oblanceolate, or elliptic, base tapered, margins entire, apex rounded to obtuse;

cauline 3–7 pairs, sessile, (11–)20–135 × 9–50 mm, blade spatulate to elliptic, ovate, or subcordate, base truncate to broadly cordate-clasping, apex rounded to acute or mucronate.

basal and cauline, opposite, leathery or not, glabrous, puberulent, or retrorsely hairy, glaucous or not;

basal and proximal cauline petiolate;

cauline sessile or short-petiolate, blade subcordate, ovate, spatulate, oblanceolate, lanceolate, elliptic, or linear, margins entire.

secund, (3–)6–44 cm, axis glabrous, verticillasters 3–15, cymes 2–4(–8)-flowered;

proximal bracts suborbiculate, ovate, or lanceolate, (4–)16–60 × (2–)5–45 mm;

peduncles and pedicels erect, glabrous.

interrupted, ± secund to secund, rarely cylindric, axis glabrous, sometimes retrorsely hairy, cymes 2 per node, sometimes 1 per node (P. labrosus);

peduncles and pedicels spreading to ascending or erect.

calyx lobes ovate, 1.6–6 × 1.4–3 mm, margins entire or erose, glabrous;

corolla red to crimson, with reddish violet nectar guides, bilaterally symmetric, weakly bilabiate, tubular, 22–30 mm, densely yellow-villous internally abaxially, tube 6–8 mm, throat 6–8 mm diam., constricted at orifice, rounded abaxially, abaxial lobes spreading to reflexed, adaxial lobes projecting to erect;

stamens included, pollen sacs divergent, 1.5–1.9 mm, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode 15–17 mm, included or slightly exserted, tip straight to recurved, distal 1–3 mm sparsely lanate, hairs yellow, to 1.5 mm;

style 18–28 mm, usually exserted.

calyx lobes: margins entire or erose, broadly scarious, sometimes scarious (P. labrosus), glabrous or glandular-pubescent;

corolla red to scarlet or orange, rarely yellow, bilaterally symmetric or nearly radially symmetric (P. eatonii), weakly to strongly bilabiate, not personate, salverform, tubular-funnelform, or tubular, glabrous externally, glabrous or hairy internally abaxially, throat slightly to gradually inflated, not constricted to constricted at orifice, rounded to slightly 2-ridged abaxially;

stamens included to exserted, filaments glabrous, pollen sacs parallel, divergent, or opposite, navicular, dehiscing incompletely, proximal 1/4–1/2 indehiscent, connective not splitting, sides glabrous or hispidulous to lanate-villous;

sutures papillate or denticulate, papillae or teeth to 0.1 mm;

staminode included or slightly exserted, flattened distally, 0.3–0.9 mm diam., tip straight, rarely recurved, glabrous or distal 5–20% hairy, hairs to 1.5 mm;

style glabrous.

10–15 × 5–9 mm.

glabrous.

brown to dark brown, angled, 1.4–4.2 mm.