1 | Twigs, lower side of leaves, hypanthium, and lower side of calyx lobes sparsely to moderately densely strigose-hirsute or villose, the hairs ± adpressed, up to 0.2 (rarely to 0.5) mm long. Calyx lobes elliptic or obovate, at base distinctly narrower than at maximum width, the apex rounded |
1' | Twigs, lower side of leaves, hypanthium, and lower side of calyx lobes densely hirsute, some of the hairs erect, c. 0.5 mm long. Calyx lobes triangular-ovate, at base very little or not narrower than at maximum width, the apex obtuse |