Greeniopsis discolor Merr., PJS

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 : 300

Greeniopsis discolor Merr., PJS 12 c (1917) Bot. 163.

Materials examined. Table 2. Fig. 4A

Small tree about 5 m high. Leaves elliptic, 15–26 × 5–10 cm, subcoriaceous, with densely hairy abaxially. Inflorescences terminal, pubescent, many-flowered. Calyx 2 mm, obtuse, puberulous. Corolla white, rarely yellow, campanulate, densely pubescent, lobes 1 mm, tube 3–4 mm. Fruits ellipsoid, 4 mm, brown, pubescent, with calyx remnants.

This species is highly similar to G. multiflora and G. pubescens in terms of reproductive structures, but is easily distinguished by its white, woolly hairs on the abaxial surface of the leaf ( Alejandro et al. 2010).