Flora of North America species comparison

erect, slender, rounded, smooth, glabrous or stipitate-glandular proximal to heads.

erect and slender or short and branched, prominently striate-angled, glabrous, eglandular.

often withering and sparse by flowering;

sessile;

blades (1-nerved) filiform to linear-oblanceolate, 10–30 × 1–3 mm (slightly fleshy), bases narrowed, margins entire (revolute), apices acute (mucronate), faces glabrous, gland-dotted.

(reduced) proximal often withered and absent at flowering;

sessile;

blades oblanceolate to narrowly oblong, 5–10(–25) × 1–3(–7) mm (thin), bases narrowed, margins entire or finely serrate (teeth aristate), faces eglandular, not resinous (distal reduced to linear or oblong scales).

funnelform;

staminate 3–5 mm, pistillate 3–5 mm.

broadly campanulate to hemispheric;

staminate 5–9 mm, pistillate 9–14 mm.

ca. 25;

corollas 2.5 mm.

20–30;

corollas 3–5 mm.

15–22;

corollas 4 mm.

20–30;

corollas 4.5–6 mm.

lanceolate (not keeled), 1–4 mm, margins ciliate, chartaceous, apices acute to acuminate (abaxial faces scurfy-glandular).

narrowly lanceolate, 2–6 mm (not keeled), medians green or brown, margins scarious, apices acute or acuminate (erose, abaxial faces glabrous, eglandular).

borne singly or in (pedunculate clusters) in loose paniculiform or racemiform arrays.

usually borne singly (terminal on slender branches).

2–3 mm, 10-nerved, glabrous or ciliate along nerves;

pappi 7–10 mm.

3–5 mm, strongly 5–10-nerved, papillose-roughened, glandular;

pappi 15–20 mm (often brownish).

= 18.

= 18.