Flora of North America species comparison

ascending to erect, 18–80 cm, glabrous or retrorsely hairy, hairs pointed, not glaucous.

ascending to erect, 8–28(–40) cm, retrorsely hairy.

cauline, opposite, glabrous, sometimes glaucous;

cauline 7–15 pairs, short-petiolate or sessile, (20–)40–100(–120) × (7–)10–30(–38) mm, blade ovate to lanceolate, base tapered to truncate, margins subentire or serrate, apex acute.

basal and cauline, not leathery, retrorsely hairy, hairs sometimes appressed, white, scalelike, sometimes basal and proximal cauline glabrate or glabrous abaxially;

basal and proximal cauline petiolate, 15–60(–78) × 4–12(–17) mm, blade spatulate to oblanceolate, base tapered, margins entire or dentate-serrate, apex rounded to obtuse or acute;

cauline 3 or 4 pairs, sessile or proximals short-petiolate, 20–50(–75) × 2–5(–10) mm, blade lanceolate to oblanceolate, base tapered to clasping, margins entire or obscurely and remotely dentate, apex obtuse to acute.

interrupted, ± secund, (2–)7–40 cm, axis glabrous or retrorsely hairy, verticillasters (3–)5–14, cymes 2–7-flowered, 2 per node;

proximal bracts lanceolate, (6–)23–70(–115) × (1–)4–28(–35) mm;

peduncles and pedicels ascending to erect, glabrous or retrorsely hairy.

± interrupted, cylindric, (3–)6–18 cm, axis glandular-pubescent and, sometimes, retrorsely hairy, verticillasters 3–6, cymes 2–5-flowered, 2 per node;

proximal bracts lanceolate, 18–46 × 2–12 mm;

peduncles and pedicels glandular-pubescent.

calyx lobes ovate to obovate or lanceolate, 2.5–6 × 1.3–1.8 mm, glabrous except for margins sometimes ciliate;

corolla lavender to purple or violet, with reddish purple nectar guides, weakly ventricose, 24–38 mm, glabrous externally except lobe margins densely white-ciliate, glabrous internally, tube 7–9 mm, throat gradually inflated, 9–10 mm diam., rounded abaxially;

stamens: longer pair reaching orifice or exserted, filaments white-lanate distally, rarely glabrous, pollen sacs parallel, 1.6–2.1 mm, distal 1/2–2/3 indehiscent, sides hispidulous, hairs white, to 0.2 mm near point of attachment of connective, sutures denticulate, teeth to 0.2 mm;

staminode 16–19 mm, reaching orifice or barely exserted, 0.4–0.5 mm diam., distal 2–5 mm sparsely to moderately lanate, hairs white, to 2 mm;

style 18–25 mm.

calyx lobes lanceolate, 5.5–8 × 1.2–2 mm, glandular-pubescent;

corolla light blue to bluish purple or magenta, with reddish violet nectar guides, ventricose, 14–22 mm, sparsely white-lanate internally abaxially, tube 5–7 mm, throat abruptly inflated, not constricted at orifice, (3–)5–7 mm diam., rounded abaxially;

stamens: longer pair reaching orifice, pollen sacs opposite, explanate, 0.7–1(–1.2) mm, dehiscing completely, sutures smooth;

staminode 8–9 mm, exserted, 0.3–0.5 mm diam., tip straight to recurved, distal 5–7 mm moderately to densely pilose, hairs yellow or orangish yellow, to 1.2 mm;

style 9–10 mm.

6–9 × 4–5 mm.

(6–)8–11 × 4.5–7 mm.

= 64.