OregonFlora species comparison

often much branched from base and clump-forming.

erect, spreading, or prostrate, often clump-forming; simple to well branched;

branches often in pairs beneath terminal heads, floccose-tomentose.

basal and cauline, mostly opposite, sometimes alternate distally, becoming bracteate and whorled below heads, linear to ovate, lanceolate, elliptic, oblanceolate, or obovate;

margins entire;

tips acute or obtuse;

surfaces floccose-tomentose, sessile.

3–18 mm, linear or narrowly oblanceolate, mostly 6–12 × as long as wide.

heads solitary or in tightly clustered glomerules of 2–4 heads.

0.

unlobed.

obovoid;

surfaces glabrous.

0.

cylindric, 0.6–1.2 mm, brown.

obovoid or cylindric, glabrous;

pappi 0.

largest 4–6 mm in diameter.

disciform; ± spherical.

20–80, 1.5–2.7 mm.

wings inflexed.

0.7–1.4 mm;

lobes usually 4.

0.

20–100+, pistillate, enclosed by paleae;

corolla tubes filiform;

styles exserted.

2–10, staminate;

corollas 4–5- lobed;

stamens included.