Flora of North America species comparison

12–50 cm.

ascending to erect, 15–25(–35) cm, glabrous, not glaucous.

cauline 5–15 pairs (distal ones much-reduced), 5–30(–46) × 4–15 mm, blade base tapered to acute to cuneate, margins sharply dentate, especially distally, or entire, apex obtuse to acute.

basal and cauline, leathery or not, glabrous, sometimes glaucous;

basal and proximal cauline 48–110 × 10–18 mm, blade oblanceolate to elliptic, base tapered, margins entire, apex obtuse to acute;

cauline 5–8 pairs, petiolate, 30–80(–120) × 4–18 mm, blade lanceolate to linear, base tapered, apex acute.

(2–)5–15(–40) cm, verticillasters (2 or)3–7(–12), cymes 1- or 2(or 3)-flowered;

proximal bracts elliptic to lanceolate, 2–5 × 1–3 mm;

peduncles and pedicels glandular-pubescent.

interrupted or continuous, ± secund, 13–48 cm, axis glabrous, verticillasters 6–14, cymes 2–4(–8)-flowered, 2 per node;

proximal bracts lanceolate, 8–50(–100) × 2–10(–20) mm;

peduncles and pedicels glabrous.

calyx lobes elliptic to ovate, 3.5–5 × 1.5–2.2 mm;

corolla unlined internally, 22–27 mm, glandular-pubescent internally, tube 4–5 mm, throat 6–7 mm diam.;

pollen sacs 1.2–1.5 mm;

staminode 16–19 mm;

style 18–25 mm.

calyx lobes ovate to obovate, 3–5 × 1.8–3 mm, glabrous;

corolla bluish lavender, with reddish purple nectar guides, ventricose, (17–)21–26(–30) mm, glabrous externally, sparsely yellow- or white-villous internally abaxially, tube 5–8 mm, throat gradually inflated, not constricted at orifice, 6–10 mm diam., rounded abaxially;

stamens: longer pair reaching orifice, pollen sacs divergent, sigmoid, 1.6–2.2 mm, dehiscing incompletely, proximal 1/3 indehiscent, connective not splitting, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode 12–15 mm, reaching orifice, 0.3–0.5 mm diam., tip straight, distal 4–6 mm densely pilose, hairs golden yellow, to 1.5 mm;

style 17–20 mm.

7–10 × 5–7 mm.

8–10 × 5–7 mm.

= 16.