Flora of North America species comparison

1–few, with several rosettes.

1.

blades narrowly white-margined;

basal oblanceolate, 4–23 × 0.3–1.2(–2) cm, basal leaves generally longer than lowest internode;

cauline leaves opposite, proximal blades oblanceolate to oblong, distal linear-oblong.

blades not white-margined;

basal spatulate-obovate, 15–60 (including proximal petiolar portions) × 3–17 cm;

cauline leaves generally whorled, blade widely elliptic to ovate, apex obtuse to acute (proximal) to acuminate (distal).

narrow, 1.5–4(–5) cm wide, interrupted proximally, ± continuous distally.

dense, sometimes interrupted proximally.

calyx 3–7(–12) mm;

corolla greenish white to pale or medium blue, usually dark blue- to purple-dotted and/or with a dark blue, purple, or green central stripe (except in var. idahoensis), 6–12 mm, lobes oblong-obovate-elliptic, widest near midlength, abruptly tapering to acute to short-acuminate apex;

androecial corona scales present, variable among the varieties;

style slender, distinct;

nectaries and foveae 1 per corolla lobe, foveae distal to nectary, opening into an elliptic-oblong to lance-ovate differentiated area on the corolla surface, rim fringed all around but with fringes shorter distally, or not fringed toward distal end.

calyx 7–15 mm;

corolla white or pale greenish yellow, pale yellow near midvein, sometimes with violet-blue tinge, not spotted, 5.3–11 mm, lobes ovate-oblong, apex acuminate;

androecial corona a dense fringe to 5 mm;

style short, ± stout and indistinctly differentiated from summit of ovary;

nectaries and foveae 1 per corolla lobe, foveae round or nearly so, opening directly adaxial to nectary, without a differentiated area on the corolla surface, rim raised, with long, incurved fringes all around.

 = 78.