Flora of North America species comparison

glabrous or sparsely and unevenly tomentose when young.

glabrous or sparsely tomentose.

usually 1.

usually single (erect), sometimes 2–6 (branching from bases, arching upward).

evenly distributed; petiolate;

blades ovate to oblanceolate, 2–10 × 0.5–2(–4) cm, bases tapered, margins lobulate to dentate, ultimate margins often secondarily dentate to denticulate (distal leaves sessile).

(sometimes subsucculent) evenly distributed; ± petiolate (proximal);

blades linear-lanceolate to lanceolate 2–5(–7+) × 0.5–2(–3+) cm, bases tapered, margins subpinnatifid to dentate or subentire (mid and distal leaves sessile, bases clasping).

0.

± 13;

corolla laminae 8–11 mm.

± 21, 4–6 mm, tips usually green, sometimes black.

± 21 (sometimes fewer), 5–7(–8) mm, tips black.

of 2–4(–6+) bractlets (prominent, black-tipped, lengths about 1/4 phyllaries).

of 5–8+ lanceolate to lance-linear or filiform bractlets (0.5–3 mm, usually inconspicuous).

8–20 in loose, corymbiform arrays.

usually 3–10(–20+) in open, cymiform arrays, sometimes borne singly (depauperate plants).

usually sparsely hairy, sometimes nearly glabrous.

hirtellous-strigose.

= 40.

= 40.