Asymmetrical elongated-oval flower buds, calcarate or not.
Ovate-elliptic buds (0.6-)0.8-1.0(-1.2) cm long and (0.2-)0.5(-0.7) cm wide, non calcarate. Calyx with unequal lobes; the lateral ones almost glabrous, others are sericeous at the dorsal face; 4[degrees] lobe with gibbous base.
The anthers are typically caudate, with the pollen-bearing anther thecae extending below the attachment point of the filament (i.e., calcarate
or spurred anthers; Robinson, 1983, 1999) (Fig.