Flora of North America species comparison

erect, tan to brown, glabrous.

erect, tan, villous to woolly.

basal withering before flowering;

cauline margins entire, faces usually eglandular, sometimes sparsely stipitate-glandular, abaxial glabrous or villous.

basal withering by flowering;

cauline margins entire, faces gland-dotted (in pits), rarely also stipitate-glandular (glands sometimesobscured by tomentum), abaxial usually woolly, sometimes villous.

cylindric to narrowly obconic, 4–6 mm.

narrowly obconic, 5–7 mm.

3–10;

corollas white to pale lavender (color more intense in tubes);

style-branch appendages truncate-penicillate, 0.1–0.3 mm.

3–6;

corollas usually white, sometimes pale lavender (color more intense in tubes);

style-branch appendages truncate-penicillate or lanceolate, 0.3–0.9 mm.

purple-tipped, faces glabrous, stipitate-glandular or gland-dotted;

inner scarious.

green or purple-tipped, faces villous to woolly, gland-dotted or not;

inner scarious.

borne ± singly, at ends of branchlets.

borne singly or in corymbiform arrays, usually in axils of leaves.

tan, equal to or shorter than cypselae.

white or tan, longer than cypselae.

= 10.