OregonFlora species comparison

1–many from basal leaf rosettes; erect; simple or branched from bases, often woolly-pubescent at nodes; otherwise glabrous.

obovate to linear-elliptic, 5–40 cm;

margins entire or dentate to denticulate, rarely lobed;

teeth few, triangular;

tips usually obtuse.

few to numerous, alternate, linear, 2–30 mm; much reduced distally;

margins entire or lightly denticulate;

tips acute;

surfaces woolly-pubescent basally, sessile.

solitary terminal heads.

± hemispheric, 3–6+ mm wide.

conic;

paleae 0.

(5)8–13, pistillate;

rays 3–10 mm, exceeding involucres, spreading, yellow

10–40+; bisexual;

corollas narrowly tubular below, widened distally, 3–4 mm, yellow;

lobes 5, spreading;

stamens 5, partly exserted from corolla throats;

stigmas slightly exserted from stamen tubes.

4–15; in 1 equal series; erect in flower, reflexed in fruit, 3–7 mm;

lobes lance-ovate; parallel-veined;

tips acute;

surfaces glabrous.

columnar-fusiform, truncate, 1.5–2.5 mm, brown, puberulent with minute, globular trichomes that are mucilaginous when wetted, 4-ribbed;

pappi 0 or of deciduous, minutely barbed bristles, 1–4 mm, white.

radiate, nodding in bud; on cloudy days; and at night; erect in fruit;

peduncles 2–12 cm, glabrous.

=18.