Flora of North America species comparison

usually 1, erect (scapiform, not branched).

basal and cauline (basal usually developing after flowers); alternate;

petiolate (petiole lengths 1–2 times blades) or sessile;

blades (basal) palmately nerved, orbiculate to polygonal or lobed (cauline leaves lance-ovate to linear, bractlike or scale-like), margins denticulate, abaxial faces gray-tomentose, adaxial tomentulose, glabrescent.

cylindric to subturbinate, 10–15 mm diam. (larger in fruit).

convex, foveolate (socket margins ± membranous), epaleate.

100–200(–300+), pistillate, fertile;

corollas yellow (drying pinkish).

(20–)30–40, functionally staminate;

corollas yellowish, tubes longer than campanulate throats, lobes 5, erect, linear;

styles not divided.

persistent, usually ± 21 in (1–)2 series, erect, distinct, lance-linear to linear, subequal, margins scarious (apices greenish or yellow-green).

0 (or indistinct, bractlets intergrading with bractlike cauline leaves).

(erect at flowering, nodding in fruit) radiate, borne singly.

narrowly cylindric or ± prismatic, 5(–10)-ribbed, glabrous;

pappi readily falling or fragile, of 60–100+, white, barbellulate or smooth bristles.

= 30.