Flora of North America species comparison

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

ascending to erect, 4–20(–25) 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 or basal and proximal cauline sometimes glabrate or glabrous abaxially;

basal and proximal cauline petiolate, 15–50(–60) × 5–18(–23) mm, blade oblanceolate to elliptic, base tapered, margins entire or remotely serrate distally, apex obtuse to acute;

cauline 2–4 pairs, sessile, 15–60 × 3–8 mm, blade oblanceolate to lanceolate, rarely pandurate, base tapered to clasping, margins entire or remotely serrate, 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.

continuous, cylindric to ± secund, 1–13 cm, axis glandular-pubescent, verticillasters 2–6, cymes 2- or 3(or 4)-flowered, 2 per node;

proximal bracts lanceolate, rarely oblanceolate, 12–42(–76) × 1–12(–16) 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, 6–10(–12) × 1.6–2.6(–3) mm, glandular-pubescent;

corolla lavender to purple or pink, with reddish purple nectar guides, ventricose, 18–28 mm, densely white-lanate internally abaxially, tube (6–)8–12 mm, throat abruptly inflated, prominently constricted at orifice, 7–12 mm diam., rounded abaxially;

stamens: longer pair reaching orifice, pollen sacs opposite, explanate, 0.8–1.2 mm, dehiscing completely, sutures smooth;

staminode 16–18 mm, prominently exserted, 0.2–0.3 mm diam., tip coiled, distal 8–11 mm densely pilose, hairs orange or yellowish orange, to 1.3 mm;

style 15–23 mm.

6–9 × 4–5 mm.

7–11 × 5–7 mm.

= 64.