Bulbophyllum samoanum is a member of Orchidaceae family .It is a small epiphyte with a clustered or weakly spreading habit; rhizome short, 2 mm in diameter. Pseudo bulbs pear-shaped, 1.2-1.5 x 0.7-0.8 cm. Leaves oblong-oblanceolate, obtuse, 6.5-14 cm long, 1-2.2 cm wide, slender petiolate. Inflorence erect, one-flowered, 6-12 cm long; peduncle short, terete, 1-3.5 cm long; bract minute, ovate, apiculate. Flower greenish yellow with reddish purple marking; pedicle and ovary 5-8.5 mm long. Lip very fleshy, slightly arcuate, ovate-sublinguiform, articulate at base, obtuse at apex, 2.5-4 x 1.5-2 mm; disc sulcate, glabrous. Column 3-4 mm long with two subulate apical satelidia; foot 2 mm long.

Reference:
Cribb, Phillip & Whistler, W. Arthur. 1996. Orchids of Samoa. The Royal Botanic Gardens. United Kingdom.