Ophiorrhiza acuminata DC., Prodr. 4 (1830) 416. Materials examined. Table 2. Fig. 3D Small to medium-sized herb less than 1 m high, branching starts at upper portion of stem, forming dense cluster of leaves. Leaves elliptic, glabrous, membranous, apex strongly acuminate, base attenuate, somewhat decurrent. Inflorescence terminal cymes. Flowers white. Fruits loculicidally dehiscent. The species was only known from its type locality at Sorsogon, Luzon. This species however, is regarded as a “dubious taxon” by Pelser et al. (2011) based on the accounts of Merrill (1923) wherein he indicated “the type is a specimen collected at Sorsogon, Luzon, by Haenke. I know the species only by description”. Nevertheless this species is accepted, and we were able to re-collect it outside its type locality.

Published as part of 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, pp. 295-312 in Check List 15 (2) on page 305, DOI: 10.15560/15.2.295

{"references": ["Pelser P, Barcelona J, Nickrent D (2011) Co's Digital Flora of the Philippines. http: // www. philippineplants. org. Accessed on: 2018 - 10 - 16", "Merrill E (1923 - 1926). Enumeration of Philippine Flowering Plants (Volumes I - IV). Bureau of Printing, Manila."]}