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 Plant a woody vine; corolla lobes subulate
..2 Plant a shrub; leaves spatulate, densely silky tomentose
....3 Stigmatic apex pubescent; anthers apically coherent; calyx lobed 1/3-1/2 to base; embryo curved
....3 Stigmatic apex glabrous; anthers rarely coherent apically; calyx lobed > 3/4 to base; embryo straight