Schradereae

Ordas, Jorge Anton D., Pinarok, Neil Alejandro A., Romeroso, Roanne B., Alejandro, Grecebio Jonathan D. & Banag-Moran, Cecilia I., 2019, A checklist of Rubiaceae species from Eastern Samar, Visayas, Philippines, Check List 15 (2), pp. 295-312 : 308

Tribe Schradereae

Schradera monocephala (Merr.) Puff, Buchner & Greimler, Blumea 43 (1998) 299.

Materials examined. Table 2. Fig. 7D

Tall shrub about 5 m high. Leaves oblong-elliptic to lanceolate, thick and subcoriaceous, nerves not prominent on both sides. Inflorescence axillary, globose heads. Calyx truncate. Flower white, valvate. Fruits brownish, with calyx remnant.

This species is widespread on the Philippines, but this is the first report of its occurrence on Samar. It is commonly mistaken as a species of Morinda due to similar infructescences. Only 2 Schradera species , both endemics, are currently recognized in the Philippines; S. elmeri Puff, Buchner & Greimler is restricted to the province of Davao in Mindanao.. Schradera monocephala is easily recognizable from S. elmeri by its leaves that have inconspicuous nerves and fruitlets that appear to be completely free from each other.