KEY TO THE SPECIES

1	Corolla with free petals. Ovary cells and style arms 6-9(-12). Whole plant glabrous. Leaflets usually entire or sparsely crenate. Main inflorescence branches borne along an elongated axis with caducous bracts; peduncles of the umbellules mostly aggregated into pseudo-whorls. Gastonia serratifolia
1'	Corolla calyptrate. Ovary cells and style arms 12-18(-22). Young parts with scurfy tomentum, persisting on the ovary and bracts. Leaflets strongly crenate. Main inflorescence branches borne sub- umbellately on a short axis with persistent bracts; peduncles of the umbellules scattered Gastonia spectabilis