Pouzolzia parvifolia Wight, Icon. Pl. Ind. Orient. 6: 39, t. 2092, f. 1. 1853; Gonostegia matsudae (Yamamoto) Yamamoto & Masamune; G. neurocarpa (Yamamoto) Yamamoto & Masamune; Memorialis matsudae Yamamoto; M. neurocarpa Yamamoto; M. parvifolia (Wight) Weddell.

Herbs or subshrubs ascending, ca. 25 cm, monoecious. Stems hirsute. Leaves all opposite, stipules broadly triangular-ovate, 1-1.5 mm; petiole absent or nearly so; leaf blade ovate, elliptic, or rarely lanceolate, 0.4-3 × 0.2-0.8 cm, herbaceous, 3-veined, often inconspicuous, both surfaces subglabrous or somewhat hirsute, base rounded or truncate, apex obtuse or slightly acute. Glomerules bisexual, 2-9 mm in diam. Male flowers: pedicel 0.5-1 mm; buds ca. 1.2 mm in diam.; perianth lobes (3 or)4, obovate, ca. 1.1 mm, apex acute. Female flowers shortly pedicellate; perianth tube ovoid-ellipsoid, ca. 1.2 mm, always longitudinally 10-12-ribbed. Achene brownish to black, ovoid, ca. 1 mm. Fl. Apr-Jul, fr. Jul-Aug.

Open wet places at roadsides, grassy places in montane forests; 300-1500 m. Taiwan [Philippines, Sri Lanka].