Flora of North America species comparison

erect, branched distally.

mostly cauline;

proximal opposite, distal alternate; ± sessile;

blades linear, margins entire or toothed, faces hirsute or villous and (distal leaves) sparsely glandular-pubescent.

± campanulate to cylindric or ellipsoid, 3–12+ mm diam.

flat to convex (setulose), paleate (paleae falling, in 1 series between rays and disc, distinct).

3–8, pistillate, fertile;

corollas yellow, turning reddish (lobes ± parallel).

4–35, bisexual and fertile;

corollas yellow to reddish, tubes ± equaling narrowly funnelform throats, lobes 5, lance-deltate (anthers ± dark purple; styles glabrous proximal to branches).

3–8 in 1 series (± lance-linear, herbaceous, each fully enveloping a ray ovary, abaxially hirsute or villous and sparsely glandular-pubescent or eglandular).

radiate, borne singly or in loose, ± corymbiform arrays.

(brown to black) similar to rays (± scabrous);

pappi of 10 white, oblong scales (apices obtuse).

(black) obcompressed, clavate (10-ribbed, straight, basal attachments centered, apices beakless, faces glabrous or ± scabrous);

pappi 0.

bracts: pit-glands, tack-glands, and/or spines 0 at tips.

= 8.