Flora of North America species comparison

glabrous or sparsely villous.

usually densely villous, rarely sparsely so, hairs often viscid when fresh, or glabrate on submerged stems.

alternate or fascicled;

stipules symmetrical;

petioles of basal leaves 0.3–0.8 cm, those of distal leaves 0.2–2.5 cm;

blade 0.8–4(–8.5) cm, apex sometimes glandular-mucronate, surfaces shiny, glabrous, rarely ciliate or minutely pellucid-punctate.

alternate, sometimes fascicled;

stipules often asymmetrical;

petioles of basal leaves (0.5–)0.8–1.6 cm, those of distal leaves 0.5–2.8 cm;

blade (0.4–)1–6(–9.5) cm, apex glandular-mucronate, surfaces not shiny, usually densely hirtellous, rarely glabrous abaxially.

anthers on short filaments 0.5–1.1 mm, those on long filaments 0.8–1.2 mm;

ovary 6–14 mm, apex truncate, glabrous or with scattered hairs, stigma usually as long as anthers, rarely exserted beyond them.

anthers on short filaments (0.7–)0.9–1.8 mm, those on long filaments (0.8–)1.1–2.2 mm;

ovary 6–10 mm, apex truncate, densely hirtellous, sometimes only on apical 1/2, stigma usually as long as anthers, rarely exserted beyond them.

10–17(–25) × 2–3 mm, pedicel 10–35 mm.

(20–)24–32 × 2–4 mm, pedicel 7–38(–60) mm.

7–14 per locule.

10–15 per locule.

= 16.

= 16 (32).