Flora of North America species comparison

erect or rarely decumbent, to 100 cm, glabrous and sometimes glaucous or sparsely to densely puberulent, sometimes mixed with longer, spreading hairs.

petiole 0–2 mm;

blade linear or narrowly lanceolate to elliptic or ovate, 1.5–7 cm.

open or dense racemes, axis straight;

buds erect.

axis erect, or prostrate to decumbent (C. davyi, C. prostrata);

buds erect.

floral tube 2–10 mm;

sepals reflexed individually or in pairs;

corolla bowl-shaped, petals lavender to purple, purplish red, or dark wine-red, often with red or purple spot near middle, tip, or base, 9–25 mm;

stamens 8, subequal;

ovary 8-grooved, length less than 8 times width;

stigma as long as or exserted beyond anthers.

floral tube funnelform to obconical, 2–15 mm;

sepals reflexed individually or in pairs;

petals lavender-pink to dark wine-red, shading white or yellow near middle or base, usually purplish red-spotted, obovate to obdeltate, unlobed, claw inconspicuous or absent;

stamens 8, subequal.

10–30 mm, beak 0–2 mm.

conspicuously 8-ribbed;

subsessile.

brown or gray, 1–2 mm, scaly, crest 0.2 mm.