400 



to % lin. crasso sursum ad angulos perscabro, basin ver- 

 sus folioso; foliis patentibus confertis berbaceo-rigidulis 

 culmo mnlto brevioribus latiuseulis longe angustato - acu- 

 minatis planis striatis, margine carinaque superne serru- 

 latis If/a — ^ ^n- lat- ; spiculis subsenis co?igestis, omnibus 

 fiessilibus, fusco-brutineis v. atrosanguineis , in antbesi ob- 

 longis v. ovatis acutis, fructigeris crassiusculis obtusis, 

 5—7 lin. long. 2 — 3 lin, lat, ; bractea infima setacea ban 

 long a calde dilutata amplectente, spiculis breviore: squa- 

 mis magnis brunnescenti-fuscis v. interdura atrosanguineis, 

 carina flavidis, oblongis v. late ovatis acutiuseulis v. ob- 

 tusissimis, concoloratis v. margine hyalino-pallidis; utri- 

 culis rkarfarm-rraiifiiusculis squama brerioribux ac angustio- 

 rihm Pj-i — 1% Int. long, stramineo-albidis vertice ferru- 

 ginescentibus, cllipsoideis v. subrotundis aequilatero-trian- 

 gularibm. angulis obtusis superne seabridis, subtiliter wr- 

 eath dense celhiloso-punctulatis, rostro brevissimo ore In- 

 tegra; caryopsi arete inalusa utrkuhim mbaeqwnte obovata 

 c. pyriformi triangulari, angulis prominentihis, transversim 

 snbundulato-punctulata fusca v. atrofusca, styli basi tenui 

 terminata. — Species a 0. atratae f omnibus bene distincta. 

 C. melanantba C. A. Meyer in Ledeb. Fl. Altaica 4. 

 216 (v. e. authent). — Boott, 111. p. 211. — Steven pi. 

 Ross. rar. — C. nigra var. ft. Trevir. in Ledeb. Fl. Ross. 

 . Sibiria altaica. 



212. C. nivalis Boott. 



Glauco-virens ; rhizornate brevissimo, fibrillis longis 

 rigidulis dense pilosis, stolonifero; culmo subpedali (1— 

 2-pedaL, Boott) ereeto tenui firmo apice eernuo, basi dense, 

 mperne laxe foliato, acute triquetro striato, apicem versus 

 obsolete granulato ibiquc ad angulos scabriusculo, foliis 



