| 1 | Hypanthium 5 — 10( — 15) mm long, tubular, dilated at base; leaves with tip of lobes obtuse to acuminate; indumentum varying |
| 1' | Hypanthium shorter, 5 by 4 mm, ± urceolate; leaves finely reddish brown pubescent below, tip of lobes obtuse |
| 2 | Bracts large, 20-30 mm; young branches patently hairy; leaves reddish villous beneath |
| 2' | Not this combination |
| 3 | Leaves on flowering shoots 4-11 cm across, rarely more |
| 3' | Leaves on flowering shoots larger, 11-18 cm across |
| 4 | Leaves glabrous to glabrescent below; divided 1 /4-1 /2, tip of lobes obtuse to subacute, rarely acute |
| 4' | Leaves densely dark brown appressed hairy below, deeply divided, 2/3-3/4, lobes narrowly triangular, tip acuminate |
| 5 | Inflorescences racemes 20-30 cm long |
| 5' | Inflorescences corymbose to racemose, up to 20 cm long.. |
