FIGURE 2. Phaius duongae Aver, V.C in Phaius Duongae (Orchidaceae, Collabieae), A New Cauline Species From Southern Vietnam

FIGURE 2. Phaius duongae Aver, V.C. Nguyen & Vuong, sp. nov. A. Flowering plant. B. Flower, frontal and side view. C. Flattened flower, lip removed. D. Lip, adaxial and abaxial surface. E. Keel on the lip disc. F. Transversal section of the keel in the middle part of the disc. G. Column, half-side and frontal view. All are drawn from the type specimen Nguyen Van Canh AL 2050 by L. Averyanov.