Click the number at the start of a key lead to highlight both that lead and its corresponding lead. Click again to show only the two highlighted leads. Click a third time to return to the full key with the selected leads still highlighted.
1 Inflorescences usually 4-many-flowered; leaves conduplicate in bud, bases truncate or rounded to cordate (rarely cuneate); petioles usually at least 10 mm; [collectively widespread]. | |
2 Margins of mature leaves with 2-6 teeth per cm; lateral leaf veins or their forks usually extending into teeth (as readily visible without magnification); ovary summit densely lanuginose. | |
2 Margins of mature leaves with 4-10 (-15) teeth per cm; lateral leaf veins mostly becoming indistinct near margin and not entering teeth; ovary summit glabrous, sparsely pubescent, or densely lanuginose. | |
6 Petals 2.6-5.8 mm long, 1-3 mm wide, sometimes andropetalous; plants cespitose; primary stems tending to be stiffly erect | |
6 Petals 6-10 mm long, 2.5-4 (-5) mm wide, not andropetalous; plants rhizomatous and in loosely scattered colonies; stems straggling-ascending | |
7 Plants rhizomatous, shrubs 0.2-2.5 m tall; petals 2.6-7.7 mm long. | |
8 Petals 2.6-5.8 mm long, 1-3 mm wide, sometimes andropetalous; leaves elliptic to oblanceolate or oblong-elliptic; sepals ± recurving | |
7 Plants not rhizomatous, shrubs to 8 m tall or trees to 20 m tall; petals (6-) 8-20 mm long. | |
10 Young leaves at flowering half-expanded or more and unfolding, often reddish, and sparsely pubescent or glabrescent on the lower surface; proximal flowering pedicels 1-1.5 cm long; sepals ascending to recurving | |