Flora of North America species comparison

basal and cauline;

blades ± oblanceolate, 1–2(–3)+ cm, 2(–3)-pinnati-palmately lobed.

basal and cauline, blades ± spatulate, 1–2(–3) cm, 1(–2)-pinnati-palmately lobed.

2–4(–5) mm diam.

3–6(–8) mm diam.

5–8(–17+) in 1–2+ series.

(20–)40–60+ in 2–4+ series.

4–8+;

corollas 1.5–2.5 mm.

4–6+;

corollas 1.5–2 mm.

mostly scattered along stems.

mostly scattered along stems.

bodies ± obovate to lanceolate, (1.5–)2.5–3+ mm, usually winged (wings entire or ± sinuate to incised, each shoulder usually distally projecting as spinelike tooth), faces glabrous or ± scabrellous to hirtellous;

pappi 0 (persistent stylar sheaths indurate, spinelike, 1–2+ mm, erect or slightly inflexed).

bodies oblanceolate to oblong-cuneate, 1.8–2.2 mm, wings transversely rugulose or ribbed on proximal 9/10, shoulders ± spinose laterally, faces distally villous to pilose or arachnose;

pappi 0 (persistent stylar sheaths indurate, spinelike, 0.8–1.5 mm, usually inflexed).

= ca. 92 (as S. pterosperma), 110+ (from Portugal), 118–120.

= ca. 114 (as S. nasturtifolia).