Erect or spreading shrub, 0.5-1.5 m tall, non-sprouting. Branchlets sparsely to densely appressed-pubescent at flowering, sometimes patchily glabrescent. Leaves usually subterete, thick, slightly to markedly compressed-pentagonal to-heptagonal in cross-section, shallowly grooved longitudinally, 2-9 (-12.5) cm long, 1-2 mm diam., glabrous; longitudinal veins 6 or 7 all around (2 marginal, 3 below and 1 or 2 above), alternating with grooves. Leaves rarely flat or concave, linear to very narrowly obovate, 2-6 mm wide, with prominent marginal veins and longitudinal veins 3 below, 1 above (sometimes upper vein obscure). Inflorescence a solitary axillary umbelliform raceme, with 8-14 flowers; pedicels cream-white, glabrous. Perianth cream-white. Pistil 5-9.5 mm long; gland subglobular, ±compressed, 0.2 mm high. Fruit 1-3 per axil, scarcely woody, sessile, obliquely ovate-acuminate (almost straight abaxially), usually slightly recurved, 0.6-0.8 cm long, 0.3-0.35 cm wide, scarcely beaked but with prominent readily broken apiculum. Seed ±elliptic-rhombic, 4.8-5.5 mm long, very shortly winged; wing extending very narrowly down both sides and around base of body, sometimes notched, dark blackish brown.