(from Greek for an oak wood: growing on trees). Gesneriaceae. Prostrate or climbing woody plants, sometimes grown under glass, but apparently not offered in this country. Flowers white or yellowish, mostly large, on short axillary usually solitary pedicels; calyx large, oblique, 5-parted; corolla-tube prominently ventricose, declinate, gibbous or saccate at base, the 5 lobes broad and spreading and only slightly unlike; stamens affixed in the base of the corolla, 4 perfect; disk-glands large at rear, small or wanting in front; style elongated: fruit fleshy, ovate, becoming 2-valved: leaves opposite, thickish. - Some 15 species in Cent, and S. Amer., closely allied to Episcia. Warmhouse plants, requiring the treatment of other gesneriads. One species is offered abroad: D. Turrialvae, Hanst., from Costa Rica: tall shrub: leaves broadly ovate, blistered, metallic-colored: flowers large, white, pendulous, the lower lobe toothed, calyx red. D. punctata, Lindl.=Episcia punctata. L H B