Table 1.

Comparison of main features separating S.lushanensis and S.folgneri.

	S. lushanensis	S. folgneri
Leaf blade	denssely greenish-grey-tomentose abaxially	densely white-tomentose abaxially
Stipule	scale-like, 1–1.5 mm long	lanceolate, 3–4.5 mm long
Petiole	sparsely greenish-grey-tomentose	densely white-tomentose
Inflorescence	sparsely white vilous	densely white tomentose
Pedicel	9.4–18.6 mm long	5–8 mm long
Petal	5.9–7.1 mm× 4–6.1 mm	5–5.8 mm× 2.5–4.2 mm
Style	glabrous	tomentose basally