Perennial shrub, up to 3 m high; branches corymbose, erect, glabrous. Leaves opposite, orbicular, shortly cuspidate, 1-nerved, glabrous. Flowers few at apex of branches. Hypanthium tomentose outside, pale yellow; tube subcylindrical, ribbed; sepals orbicular. Petaloid floral glands 4, anther-like, very thick, shortly stalked. Anthers oblong, obtuse. Flowering time Mar.?.
Like G. oppositifolia but leaves broadly elliptic to orbicular.