Flora of North America species comparison

ascending to erect, 20–60 cm, glaucous, sometimes not.

glabrous, glaucous, sometimes not.

glabrous, glaucous;

basal and proximal cauline 28–100 × 2–11 mm, blade oblanceolate to elliptic, base tapered, margins entire, apex obtuse to acute;

cauline 3–6 pairs, sessile, (11–)30–80(–120) × 2–9 mm, blade lanceolate to linear or linear-subulate, base clasping to auriculate-clasping, margins entire, apex rounded to acute.

basal and cauline, sometimes basal few (P. subulatus), or essentially cauline (P. centranthifolius), opposite, leathery, rarely not (P. alamosensis, P. parryi), glabrous, rarely scabrous, glaucous, rarely not;

basal and proximal cauline petiolate;

cauline sessile or short-petiolate, blade ovate, oblanceolate, lanceolate, oblong, elliptic, linear, or linear-subulate, margins entire, rarely toothed.

interrupted, cylindric, 6–26 cm, axis glabrous, verticillasters 5–9, cymes 1–4-flowered;

proximal bracts lanceolate to linear, 6–33 × 1–4 mm;

peduncles and pedicels erect, glabrous.

± interrupted, cylindric or ± secund, axis glabrous, rarely scabrous, cymes 2 per node, sometimes 1 per node (P. alamosensis);

peduncles and pedicels spreading to ascending or erect.

calyx lobes ovate to lanceolate, 2–4.5 × 1.4–2.1 mm, margins entire or erose, glabrous or ± glandular along margins;

corolla scarlet, without nectar guides, nearly radially symmetric, weakly bilabiate, salverform, 18–26 mm, glabrous externally, glabrous internally, tube 4–7 mm, 1.6–3 times as long as calyx lobes, throat slightly inflated, 3–5 mm diam., rounded abaxially;

stamens: longer pair reaching orifice, pollen sacs explanate, 0.7–0.9 mm, sutures smooth;

staminode 13–14 mm, essentially terete, 0.1 mm diam., tip straight, glabrous, rarely distal 1–2 mm sparsely papillate, papillae yellow, to 0.2 mm;

style 10–19 mm.

calyx lobes: entire or erose, ± scarious, glabrous or sparsely glandular or glandular-pubescent;

corolla red, scarlet, crimson, magenta, pink, orange, lavender, violet, reddish violet, or purple, bilaterally symmetric or nearly radially symmetric, bilabiate or weakly bilabiate, not personate, salverform, tubular-salverform, or tubular-funnelform, sometimes ventricose, glabrous or glandular-pubescent to glandular externally, glabrous or glandular-pubescent internally abaxially or wholly, throat slightly to gradually inflated, not constricted at orifice, rounded or slightly 2-ridged abaxially;

stamens included or longer pair reaching orifice, filaments glabrous, pollen sacs opposite, dehiscing completely, explanate, sometimes navicular, connective splitting, sides glabrous, sutures smooth, sometimes papillate;

staminode included, flattened distally or ± terete, 0.1–1(–2.5) mm diam., tip straight or recurved, glabrous or distal 10–40(–70)% papillate or hairy, papillae or hairs to 1.5 mm;

style glabrous.

6–8 × 4–5 mm.

glabrous.

brown to black, angled, 1–4 mm.

= 16.