OregonFlora species comparison

not woody.

erect or decumbent, branched proximally, distally, or throughout, woolly-pubescent.

opposite;

proximal often alternate, 1–8 cm;

surfaces woolly-pubescent, or adaxially glabrate and green, sessile or petiolate.

cauline, usually opposite; upper sometimes alternate, lanceolate or oblanceolate to linear, bases auriculate-clasping;

margins usually pinnately toothed or lobed, rarely entire;

tips acute;

surfaces usually somewhat woolly, sessile or petiolate.

raceme- or panicle-like arrays, or heads solitary.

3–11 mm.

campanulate or hemispheric, 3–12+ mm in diameter.

flat to columnar;

paleae 0.

(0)5–15;

corollas 5–20 mm, yellow.

pistillate, fertile;

rays slightly to well exceeding involucres, bright yellow, rarely white or pale yellow;

lobes distinct to minute or absent.

20–200.

bisexual;

corollas tubular, narrowed in lower half, exceeding involucres, yellow, puberulent;

lobes 5, triangular; erect or spreading;

stamens slightly exserted;

stigmas slightly exserted.

in 2–3 equal series; lance-linear, woolly tomentose.

in few equal series; erect, linear-lanceolate; midribs evident;

tips acute or obtuse;

surfaces woolly-pubescent.

2–5 mm, brown, pappi of 6–12 erose or lacerate scales, 0.3–2 mm.

linear-clavate or flattened, ribbed or angled, truncate, glabrous or pubescent;

pappi 0 or of 6–12 persistent, lacerate scales in 1–2 series.

solitary or few in open panicle-like arrays;

peduncles 3–30 cm, woolly-tomentose.

radiate, rarely discoid; erect;

peduncles bractless or few-bracted.