Flora of North America species comparison

erect, (10–)20–250(–320) mm, nodes 3–6, internodes 1–6 mm, glandular-pubescent to glandular-villous.

erect to ascending-erect, 300–1200 mm, glabrous.

usually cauline, relatively even-sized or reduced distally;

petiole absent, bases of largest leaves often long-tapered to petiole-like extensions;

blade obovate, elliptic, or oblanceolate, (5–)7–35(–50) × (2–)3–18(–26) mm, margins entire, rarely toothed, plane, apex abruptly acuminate, acute-acuminate, or cuspidate to long-tapering or long-acuminate, surfaces glandular-pubescent.

cauline, relatively even-sized;

petiole absent;

blade elliptic to broadly elliptic-oblanceolate or elliptic-lanceolate, 15–60 × 4–21 mm, margins entire or serrate, plane or revolute, apex acute to obtuse or rounded, surfaces glabrous.

1–4(–8) mm in fruit.

6–15 mm in fruit.

2 per node, or 1 or 2 per node on 1 plant, chasmogamous.

2 per node, chasmogamous.

glandular-puberulent.

minutely glandular.

magenta with dark reddish spot on each side of mouth on interior lateral walls of throat, usually with reddish lines extending from throat onto midveins of lobes, throat floor yellow with reddish speckling and variable reddish markings, palate ridges yellow, tube-throat (9–)12–22 mm, limb 12–24 mm diam., not bilabiate.

deep red to scarlet, throat sometimes orange, not spotted or striped, palate ridges red to orange-red, tube-throat 27–33 mm, limb 12–16 mm diam., bilabiate, lobes oblong, each truncate-entire to slightly emarginate.

symmetrically attached to pedicels, inflated in fruit, 6–13(–15) mm, glandular-pubescent, tube strongly plicate, lobes slightly recurved, narrowly triangular, subequal, often slightly indurate, apex acuminate to attenuate, ribs broad, darkened, blackish, thickened, strongly raised, intercostal areas whitish, membranous.

not inflated in fruit, 18–25 mm, glabrous, tube slightly dilated distally, lobes unequal, apex acute, ribs green, intercostal areas light green.

(6–)7–13(–15) mm.

14–21 mm.

included, glabrous, sometimes ciliate.

exserted, glabrous.

included, lobes equal.

exserted, lobes equal.

= 20.