Flora of North America species comparison

erect, (40–)50–95(–120) cm, glabrous.

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

basal and cauline, glabrous;

basal and proximal cauline 30–160 × 6–50 mm, blade spatulate to obovate, base tapered, apex rounded to obtuse or acute;

cauline 4–8 pairs, sessile, 18–90(–110) × 15–50 mm, blade spatulate to orbiculate, base clasping, apex rounded to obtuse.

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, cylindric, 12–30(–40) cm, axis glabrous, verticillasters 3–7(–9), cymes 2–4-flowered;

proximal bracts ovate to elliptic or orbiculate, (9–)16–83 × (9–)16–54 mm;

peduncles and pedicels glabrous.

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, 7–11 × 2.5–4 mm, margins entire, rarely erose, herbaceous or narrowly scarious, glabrous;

corolla lavender to blue or pinkish blue, with magenta nectar guides, ampliate, 35–48 mm, glabrous externally, glabrous internally, tube 10–13 mm, throat abruptly inflated, 15–18 mm diam., rounded abaxially;

stamens included, pollen sacs opposite, 2.1–2.6 mm, sutures papillate;

staminode 16–21 mm, included or reaching orifice, 2–2.6 mm diam., tip recurved to coiled, distal 1–2 mm sparsely villous, hairs golden yellow, to 0.5 mm;

style 19–30 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.

16–20(–25) × 8–15 mm.

6–9 × 4–5 mm.

= 16.

= 16.