1 | Inflorescence-branches glabrous |
1' | Inflorescence-branches rufous-puberulent or -tomentellous |
2 | Leaves usually broadly ovate, often cuspidate; female perianth ellipsoid or infundibuliform, not constricted at apex, with acute, erect lobes |
2' | Leaves usually elliptical or broadly oblong, not cuspidate |
3 | Female perianth densely rufous-puberulent, narrowly tubular |
3' | Female perianth lightly rufous-puberulent, subtubular or ellipsoid |