Flora of North America species comparison

ascending or erect, rarely decumbent, (8–)16–50(–60) cm, glabrous, not glaucous.

ascending, 7–20(–28) cm, retrorsely hairy, hairs appressed, white, scalelike, not glaucous.

basal and cauline, or basal not persisting, ± leathery or not, glabrous, not glaucous;

basal and proximal cauline (18–)35–180 × (3–)6–15(–24) mm, blade oblanceolate to oblong or linear, base tapered, margins entire, apex obtuse to acute;

cauline 3–5(or 6) pairs, sessile or proximals sometimes short-petiolate, 34–115 × 2–14 mm, blade oblanceolate to oblong or linear, base tapered, apex obtuse to acute.

cauline, opposite, glabrous abaxially, glabrate or retrorsely hairy, hairs appressed, white, scalelike, adaxially, not glaucous;

cauline 4–7 pairs, short-petiolate or sessile, 17–35 × 3–7 mm, blade oblanceolate to lanceolate, proximals sometimes spatulate, base tapered, margins entire, apex rounded to obtuse or acute.

interrupted or continuous, secund, (1–)6–18(–25) cm, axis glabrous or sparsely glandular-pubescent, verticillasters (2 or)3–7(–9), cymes (1 or)2–5-flowered, 2 per node;

proximal bracts lanceolate to linear, 25–70(–95) × (1–)3–12(–20) mm;

peduncles and pedicels glabrous or glandular-pubescent.

interrupted, secund, 1–11 cm, axis glandular-pubescent distally, sometimes also retrorsely hairy proximally, hairs appressed, white, scalelike, verticillasters 2–5(–7), cymes 1- or 2(or 3)-flowered, 2 per node;

proximal bracts lanceolate, 4–26 × 1–7 mm;

peduncles and pedicels ascending to erect, glandular-pubescent.

calyx lobes ovate to lanceolate, (4–)4.8–11 × 1.3–3.2(–3.7) mm, glabrous or glandular-pubescent;

corolla blue to lavender, with reddish purple nectar guides, ventricose, 18–33 mm, sparsely to moderately glandular-pubescent externally, glabrous, rarely sparsely white-villous, internally abaxially, tube 6–11 mm, throat gradually inflated, slightly constricted at orifice, 6–11 mm diam., rounded abaxially;

stamens: longer pair reaching orifice, pollen sacs divergent to opposite, navicular to navicular-sigmoid, (1.3–)1.5–2.4 mm, dehiscing incompletely, proximal 1/5 indehiscent, connective not splitting, sides moderately pubescent, hairs white, to 0.8 mm, sutures denticulate, teeth to 0.1 mm;

staminode 11–19 mm, reaching orifice, 0.3–0.8 mm diam., tip straight to recurved, distal 3–7 mm sparsely to moderately villous, hairs yellow, to 0.8 mm;

style 12–22 mm.

calyx lobes ovate to lanceolate, 3.5–5.5(–6.5) × 1.7–2.1 mm, glandular-pubescent;

corolla violet to reddish purple, without nectar guides, funnelform, 14–18 mm, glandular-pubescent externally, glabrous internally, tube 5–6 mm, throat gradually inflated, 4.5–6 mm diam., 2-ridged abaxially;

stamens included or longer pair reaching orifice, filaments glabrous, pollen sacs parallel, 0.9–1.2 mm, distal 1/2–2/3 indehiscent, sides glabrous, sutures denticulate, teeth to 0.1 mm;

staminode 7–8 mm, exserted, 0.4–0.6 mm diam., glabrous;

style 10–13 mm.

6–10 × 5–6.5 mm.

6–9 × 4–5 mm.

= 16.