Actinoscirpus grossus (L.f.) Goetgh. & D.A.Simpson, Kew Bull. 46(1): 171. 1991.

Bhandari, Prabin, Chaudhary, Satyam, Neupane, Ajay, Zhou, Shi-Liang & Zhang, Shu-Ren, 2021, Taxonomic notes on Cyperaceae of Nepal: new records of a genus, six species and other noteworthy species, PhytoKeys 180, pp. 141-156 : 141

Actinoscirpus grossus (L.f.) Goetgh. & D.A.Simpson, Kew Bull. 46(1): 171. 1991.

Scirpus grossus L.f., Suppl. Pl. 104. 1782.

Schoenoplectus grossus (L.f.) Palla, Allg. Bot. Z. Syst. 3. 1911.

Type.

India, collector unknown s.n. [lectotype, designated by Goetghebeur and Simpson 1991, pg. 171: LINN (Herb no. 71/32 image!)].

Description.

Perennial herbs, stolon bearing. Culm up to 2 m high, acutely 3-angled, smooth or scabrid. Leaves linear, 8-19 mm wide, margin entire to scabrid. Involucral bracts leaf-like exceeding inflorescence to 60 cm. Inflorescence in terminal anthela bearing many spikelets. Spikelets ovoid-ellipsoid, 2-4 × 2-3 mm. Glumes broadly ovate or elliptic to oblong, brownish, 2-3 × 1.5-2.5 mm, membranous, abaxially pubescent, margin ciliate, apex apiculate or mucronate, single-veined. Perianth bristles 6, retrorsely scabrous or plumose, slightly shorter to slightly longer than achene. Stamens 3, longer than achene. Anthers 1.5 mm. Style 1 mm long. Stigmas 3, 1 mm long. Achene 3-sided, obovoid, 1.5 × 1-1.3 mm, brownish, smooth.