4. Epigeneium nakaharae (Schlechter) Summerhayes, Kew Bull. 12: 263. 1957.
台湾厚唇兰 tai wan hou chun lan
Dendrobium nakaharae Schlechter, Repert. Spec. Nov. Regni Veg. 2: 169. 1906 ["nakaharaei"]; D. sanseiense Hayata; Epigeneium sanseiense (Hayata) Summerhayes.
Rhizome creeping, with slender and curved roots. Pseudobulbs tufted on rhizome, nearly prostrate below middle and ascending above, ovoid-oblong, 13-30 × 6-10 mm, 1-leaved, with yellowish green or yellow scalelike sheaths at base. Leaf blade erect, elliptic to oblong-obovate, 2-5 × 0.9-1.5 cm, thickly leathery, base contracted, shortly petiolate, articulate, apex rounded and slightly emarginate. Inflorescence 1-flowered; peduncle short, with long sheaths; floral bracts ovate, 3-4 mm, acute. Flower with yellowish green sepals and petals, lip white, all tinged with purplish brown; pedicel and ovary 2-3 cm. Dorsal sepal ovate-lanceolate, 10-17 × 7-8 mm, acute; lateral sepals falcate-lanceolate, 12-19 × 6-8 mm, acute. Petals narrowly oblong, 12-18 × ca. 4 mm; lip pandurate in outline, 12-19 × 7-9 mm, 3-lobed; lateral lobes erect; mid-lobe orbicular or broadly obovate, 7-8 mm, apex rounded and apiculate or slightly emarginate; disk with 2 longitudinal lamellae adaxially. Column ca. 2 mm, foot 6-10 mm. Fl. Oct-Feb.
● Epiphytic on tree trunks in broad-leaved forests; 700-2400 m. Taiwan.