Flora of North America species comparison

erect, sometimes ascending, 30–63 cm, glabrous, not glaucous.

decumbent to ascending, 5–26 cm, usually ± fistulose, glutinous and covered with sand, not glaucous.

basal and cauline, or basal absent, not leathery, glabrous or retrorsely hairy, not glaucous;

basal and proximal cauline 30–90(–116) × 5–26 mm, blade oblanceolate, base tapered, margins entire, apex obtuse to acute;

cauline 6–12 pairs, sessile, 25–113 × 3–13 mm, blade lanceolate to linear, base tapered to truncate, apex obtuse to acute.

basal and cauline, not leathery, glutinous and covered with sand, not glaucous;

basal and proximal cauline 18–80 × 4–15 mm, blade oblanceolate, base tapered, margins entire, crisped, apex obtuse to acute;

cauline 2–5 pairs, sessile, 15–75 × 2–8 mm, blade oblanceolate to lanceolate, base tapered to truncate, margins crisped, apex rounded or obtuse to acute.

continuous, sometimes interrupted, secund, 16–30 cm, axis glabrous, verticillasters 7–11, cymes 1–4-flowered, (1 or)2 per node;

proximal bracts lanceolate to linear, 10–72 × 1–12 mm;

peduncles and pedicels glabrous.

continuous, cylindric, 4–15 cm, axis glutinous and covered with sand, verticillasters 4–10, cymes 1–6-flowered, 2 per node;

proximal bracts lanceolate, 14–45 × 2–5(–8) mm;

peduncles and pedicels glutinous and covered with sand.

calyx lobes lanceolate to elliptic, 3–5 × 2–2.6 mm, glabrous;

corolla lavender to violet, with reddish purple nectar guides, ventricose, 26–34 mm, glabrous externally, sparsely to densely white-villous internally abaxially, tube 7–8 mm, throat gradually to abruptly inflated, not constricted at orifice, 7–10 mm diam., rounded abaxially;

stamens: longer pair exserted, pollen sacs opposite, navicular, 1.4–1.9 mm, dehiscing completely, sides glabrous, sutures smooth or papillate;

staminode 14–16 mm, reaching orifice or exserted, 1–1.2 mm diam., tip straight, glabrous;

style 14–18 mm.

calyx lobes lanceolate, 5–6.5 × 1–2 mm, glutinous and covered with sand;

corolla lavender to blue-lavender, with violet nectar guides, weakly ventricose, 14–17 mm, glabrous externally, usually glutinous and covered with sand distally, especially on lobes, glabrous internally, tube 5–6 mm, throat gradually inflated, not constricted at orifice, 5–6 mm diam., slightly 2-ridged abaxially;

stamens: longer pair reaching orifice, pollen sacs opposite, navicular, 0.9–1.4 mm, dehiscing completely or incompletely, connective splitting or not, sides glabrous, sutures papillate;

staminode: 8–9 mm, included, 0.3–0.5 mm diam., tip straight, distal 4–5 mm sparsely papillate, papillae violet, to 0.2 mm;

style 10–12 mm.

9–14 × 5–6 mm.

3.5–6.5 mm.

= 16.