— 752 — 



254. — Habitat in Japonia, in China, in desertis 

 soongoricis et in provinciis caucasicis. 



Species valde polymorpha. Radix fibrosa, annua. 

 Caules caespitosi, prostrati, apice adscendentes, ra- 

 mosi, glabri, spithamaei usque sesquipedales. ^Va- 

 ginae ad basin fissae, striato-sulcatae, v. omnino 

 patenter hirsutae, v. sparse pilosae, v. praecipue 

 apicem versus margine ciliatae, caeterum glabrae 

 v. totidem glabrae, supremae magis elongatae la- 

 mina minima terminatae. Ligula brevis, truncata, 

 glabra v. plus minus ciliata. Folia e basi cordata 

 amplexicauli oblongo - lanceolata v. ovato - lanceo- 

 lata, utrinque glabra v. plus minus pilosula, mar- 

 gine basi tantum v. a basi ad medium v. ad apicem 

 pilis elongatis ciliata, culmi internodio plerumque 

 longiora v. rarius breviora. — Spicae solitariae v. 

 binae v. ternae v. saepius iterato bifidae subdigi- 

 tato - aggregatae , in apice ramorum elongatorum 

 nudorum terminales v. rarius ex vagina suprema 

 vix exsertae. Spiculae 3 — 10 in quavis spica, 

 alternae, solitariae, adpressae, rhacheos internodio 

 paullo usque sesqui longiores , basi rudimento pe- 

 dicelliformi spiculae tabescentis minimo v. usque 

 spiculam dimidiam aequante instructae. Rhacheos 

 internodia articulata, glabra v. apice pilis singulis 

 barbulata v. suprema pilorum série vestita. Glu- 

 mae flores includentes. Gluma inferior ovato -lan- 

 ceolata, herbacea, acuta, mutica, dorso convexa, 

 7 — 9-nervia, nervis in dorso glumae sub lente sca- 

 bris; gluma superior inferiorem subaequans, lan- 

 ceolata, carinata, scariosa, scabra utrinque nervo 

 unico laterali vix conspicuo percursa, apice acuta, 



