Flora of North America species comparison

1.

1–few.

blades not white-margined;

basal spatulate or oblanceolate to elliptic-obovate, 7–50 × 1–15 cm, apex rounded to acute;

cauline leaves whorled, blade oblong-lanceolate.

blades white-margined;

basal oblanceolate, 2–10 × 0.5–1 cm;

cauline leaves whorled at least proximally on main stem, usually opposite on branches, distal blades linear-lanceolate.

elongate, open proximally, ± dense distally.

diffuse, often branching at or near base of main stem.

calyx 10–25 mm;

corolla pale yellowish green, purple-dotted, occasionally suffused with purple distally, 12–25 mm, lobes elliptic-oblong to obovate, apex [obtuse or] acute to short-acuminate;

androecial corona scales 7–9 mm, deeply multicleft;

style slender, distinct;

nectaries and foveae 2 per corolla lobe, foveae narrowly elliptic, opening directly adaxial to nectary, each opening with a ± even fringe all around, the pair opening into a green but not rimmed area on the corolla surface.

calyx (2–)5–12 mm;

corolla greenish white, often purple-dotted, 8–14 mm, lobes elliptic-obovate, apex abruptly acuminate;

androecial corona a fringe, sometimes scarcely developed;

style slender, distinct;

nectaries and foveae 1 per corolla lobe, foveae opening distal to nectary, into a differentiated area on the corolla surface that is proximally oblong with a raised rim fringed ± 1/2 its height, distally wider with rim fringed to base.

 = 78.