Antirhea ovatifolia (M.E.Jansen) Chaw
Chaw, S.M. (1992) Tulane Studies Zoology Botany 28: 98.
Usually flowers and fruits as a shrub 1-3 m tall.
Stipules triangular, pubescent, about 0.5-4 mm long. Leaf blades about 1.5-6.5 x 0.7-3.5 cm, petioles about 0.5-1 cm long. Lateral veins about 5 or 6 on each side of the midrib. Oil dots minute, scarcely visible with a lens. Domatia are tufts of hair. Petioles clothed in pale tortuous, +/- erect hairs.
Peduncles long and slender, about 10-30 mm long, sometimes could be mistaken for pedicels. Calyx lobes dimorphic, two lobes oblong, about 0.3-0.8 mm long and two filiform or lanceolate, about 0.9-1.8 mm long. Corolla tube about 4-5 mm long, lobes orbicular, about 0.9-1.1 mm diam. Stamens about 1.5-2 mm long. Style about 2 mm long.
Cotyledons ovate, about 7.5-12 x 4-5 mm, stipulate. Cotyledonary stipules about 2 mm long. First pair of leaves opposite, hairy on both the upper and lower surfaces, stipulate, stipules about 2 mm long clothed in white hairs. At the tenth leaf stage: leaf blade +/- ovate, hairy on both the upper and lower surfaces. Midrib raised on the upper surface of the leaf blade. Stipules about 4 mm long, hairy on the outer surface, interpetiolar, abruptly narrowed into a long acuminate point at the apex. Seed germination time 168 to 209 days.