Brexia coursiana H. Perrier

Schatz, George E. & Lowry Ii, Porter P., 2004, A synoptic revision of Brexia (Celastraceae) in Madagascar, Adansonia (3) 26 (1), pp. 67-81 : 76

6. Brexia coursiana H. Perrier

Bull. Soc. Bot. France 89: 221 (1942). — Type: Cours 1194, Madagascar, Prov. Toamasina, Varania [Varahina]-(Onibé), dist. d’Ambatondrazaka , 850 m, Nov. 1938, bud (holo-, P!) .

Brexia coursiana is a sparsely branched shrub to treelet in mid-elevation subhumid forest from the region of Zahamena PN/RNI (Fig. 5). It can be recognized by its leaves with an acute apex, inflorescences usually borne on the main stem (cauli- flory), slender peduncles less than 1 mm broad with secondary axes branching well below the apex, a distinctly 5-lobed calyx, and petaloid disc segments with an irregularly laciniate margin.

CONSERVATION STATUS. — With an AO of 200 km 2, and only 2 subpopulations, both of which are encompassed within the Zahamena protected area, Brexia coursiana is assigned a preliminary status of Endangered (EN B1ab2ab).

MATERIAL EXAMINED. — MADAGASCAR: Andrianjafy 326, Zahamena RNI; Cours 1194, Varahina; Randrianjanaka 600, Zahamena RNI; Ratovoson 309, Zahamena RNI.