Flora of North America species comparison

glabrous or minutely hispidulous.

glabrous.

basal and proximal absent at flowering;

cauline blades 1-nerved, linear or filiform to narrowly oblanceolate or lanceolate, 0.5–2.2(–4) mm wide, little reduced distally.

basal sometimes persistent, proximal usually absent at flowering;

cauline blades 1-nerved, narrowly elliptic-oblanceolate to elliptic-lanceolate, 1–2 mm wide, reduced distally.

cylindric, 1–1.5 mm diam.

campanulate, 4–7 mm diam.

1(–2; each enclosed by conduplicate inner phyllary);

corollas yellow, (1.5–)2–3.5 mm.

8–15;

corollas white, drying light yellow or reddish, 6–7.5 mm.

1, sometimes 2 (functionally staminate; corollas broadly obdeltate-funnelform, throats widely flaring, lobes 1/3 corolla lengths, recurved-coiling).

(16–)20–30(–40).

(2–6, sessile to subsessile, in compact glomerules) in flat-topped arrays.

borne singly or in loose, open arrays.

1–1.8(–2.5) mm, faces densely strigoso-sericeous;

pappi (rays, readily falling) of 1 series of narrowly lanceolate-oblong scales.

0.9–1.6 mm, faces without oil cavities, densely strigoso-sericeous (hair apices prominently bulbous-capitate);

pappi coroniform or of 1 series of basally connate scales 0.1–0.3 mm (obscured by cypsela indument).

apices flat.

apices flat.

= 8, 16, 24, 32.

= 8.