Stems almost completely 4-lined to 2-lined. Leaves broadly ovate or broadly elliptic or ovate -oblong to linear; tertiary reticulate venation dense to lax; pale laminar glands dense (especially in upper leaves) to very few. Sepals broadly elliptic to linear-lanceolate, obtuse to acuminate, entire or ± eroded-denticulate to subfimbriate. Petals with black laminar glands rather numerous to few, mostly linear to mostly punctiform, or absent; black marginal glands present. Capsule with vittae all linear and vertical or some lateral, oblique and irregular to elongate-vesicular.