KEY TO THE SPECIES

1Fruiting calyx urceolate, 2-2.5 mm long, with deltoid teeth. Corolla 2-2.5 mm long. Leaves membranaceous, glabrescent or puberulent
1'Fruiting calyx campanulate, 5 mm long, with lanceolate teeth. Corolla 5.5-6 mm long. Leaves chartaceous to coriaceous, tomentose or densely woolly