in Latin (?). Perennis, innovationibus extravaginalibus. Culmi erecti, interdum ramos basilares flagelliformes radicantes demum ascendentes florentes procreantes, teretes, glaberrimi, 30 - 70 cm alti, plurinodes, superne simplices. Folia inferiora pubescentia, superiora plus minus glabra; vaginae teretes, laxiusculae, internodiis breviores, inferiores margine ciliatae. Ligula brevis, rotundata, membranacea, dorso pilis stipata. Laminae lineares, sensim acutatae, ad 12 cm lg., 4 mm lt., planae, rigidulae, margine incrassato saepe undulato scaberimae, tenuinerves. Racemi in apice culmorum tenuium 1-2, robustorum 3, arcte approximati, 6-9 cm lg., ad 3mm lt., suberecti, rhachi recta, latitudina fere spicularum, dorso plana spiculis destituta, ventre carinata spiculifera, utrinque scabra, margine longe at rigidiuscule ciliata. Spiculae in singulis rhachoes nodis binae, ideoque plus minusve disticncte 4- seriales, appresse imbricatae, altera cujusvis paris pedicellulo minuto (0.3 mm lg. ) altera pedicello circ. 1mm longo fulta, pedicellis linearbus apice haud dilatatis hipidulis. Spiculae lanceolatae, 4 mm lg., bicolores, dorso livide virides v. violascentes, ventre castaneae v. demum atrofuscae. Gluma I 0.5 mm longa vel brevior, interdum obsoleta, ovata v. suborbicularis, saepe bilobulata, enervis; II spiculam aequans, a rhachi aversa, lanceolata, acuminata, in aristam rectam tenuem scabrum 10 - 12 mm longam abiens, dorso plana, nervis 5 prominulis scabris percursa, margine anguste inflexa, flexuris superne aculeolatis, livide virens v. violascens. III (fertilis) versus rhachin spectans, ceterum ut in charatere generis descripte. Anthaerae 2 mm longae.