OregonFlora species comparison

erect; simple to distally much branched, glabrous to villous or puberulent.

ovate to lanceolate in outline, 2–12 × 1–4 cm;

margins often dentate, 1–2–pinnately lobed;

surfaces glabrous or minutely pilose;

primary lobes in 2–3(4) pairs; secondary lobes ovate to oblanceolate.

basal and cauline, alternate, bases often with lobed, fringed, or clasping auricles;

margins entire to dentate, often 1–3-times pinnately lobed;

surfaces glabrous, strigillose, floccose, or lightly to densely villous, abundantly punctate-glandular;

basal often withered by flowering, sessile or petiolate.

clusters in panicle-like arrays.

3–3.5 × 5–12 mm.

campanulate or hemispheric.

flat to rounded or conic, sometimes exceeding involucres in fruit;

paleae 0.

10–40;

rays 3–6 mm, white.

pistillate, sometimes vestigial or 0;

rays ovate-elliptic;

tips acute or truncate, sometimes 2–4-lobed.

corollas 1–3 mm, yellow.

numerous; bisexual;

corollas tubular, linear or gradually widened distally, 4–5-lobed;

lobes triangular;

stamens included or slightly exserted;

stigma lobes at tips of stamen tubes.

with chartaceous margins; inner not membranetipped.

in 3–6 series;

surfaces glabrous, villous, or minutely glandular; inner equal, linear-lanceolate to lanceolate or ovate; outer equal or gradually shorter, lanceolate; ovate or triangular;

margins membranous or chartaceous;

tips acute or obtuse.

1–2 mm, brown, glabrous, 5–8-ribbed;

pappi 0 or of low crowns.

obconic or columnar, glabrous or gland-dotted;

veins 5–10+;

pappi usually of low crowns, rarely of scales or 0.

5–25;

peduncles 1–10 cm, glabrous or puberulent.

usually radiate, sometimes disciform;

peduncles glabrous to strigillose or villous.

=18.