CYPERACE^E. 



115 



triangulares dorso angulato-convexse facie planse sursnm fusco-rubescentes 

 deorsum fulvescentes transverse rugulosse. 



HAB. Ako : Kotansho, leg. G. NAKAHAKA, (No. 510), Sept. 1905 ; 

 Bioritsu : Soyosho, leg. G. SHIMADA, Aug. 1907. 



Related to S. supinus, S. erectus and 8. articulatus ; but different from 

 them by the very much smaller spikelets and by the absence of bristles. 



Scirpus morrisonensis HAYATA, (Fig. 32) Fl. Mont, Formos. p. 230. 



Scirpus (Sect. Euscirpus) Sasakii HAYATA sp. nov. 



Scirpus supinus LINN. ? " CLARKE 

 in HOOK. f. Fl. Brit. Ind. VI. p. 

 655 : Stems medium terete, spikelets 

 in a single lateral head, glumes 

 ovate keeled with suberect rnucro, 

 bristles O, styles 3-fid, nut obovoid 

 triquetrous obtuse transversely scabrous 

 undulate black." 



HAB. Toycn, leg. S. SASAKI, Nov. 

 1910 ; Taihoku, leg. S. SASAKI, Juli. 

 1909. 



It is with some hesitation that I 

 have compared this plant to S. supinus 

 LINN. The nuts of our plant are very 

 faintly transversely muricated, the styles 

 are 2-fid, bristles always present (6 in 

 number), nuts plano-convex. Our plant 

 is, however, certainly nearer to S. 

 supinus than to S. erectus in the charac- 

 ters of carinatc mucronate glumes and 



, M -i . mi i ., P Fig. 33. Scirpus Sasakii HAYATA; a, a 



angular spikelets. Ihe description of ., , ,. * , .., . 



spikelet ; b, a glume ; c, an ovary with filaments 



this new Species will be given in the and setae; d, a nutlet; e, a seta (greatly mag- 



next volume. 



nified) ; f , a seed ; g, section of the same. 



