190 ■ BOTANICAL MAGAZINE, [Voi. xvii, 



194; Liudl. Syn. Brit. Fl. ed. 2, p. 297; Reichb. Fl. Germ. Escurs. p. 74 

 (1830); Nees in Linofea IX. (1834) p. 279, excl. var.. fusca] Kunth 

 Emim. PI. II. (1837) p. 295 ; Niitt. Geo. K Amer. PI. p. 33 ; Eoem. et 

 Schult. Syst. Veg. II. p. 87, Mant. p. 48, ' et Add. II. p. 529 ; Boeck. 

 in Linn^ea XXXVIf. p. 570 ; Hook. Fl. Bor. Amer. II. p. 233 ; Ledeb. 

 Fl. Ross. IV. p. 259 ; Steiid. Syn. PI. Glum. Gyp. p. 149 ; Nyman Syl. 

 FI. Eur. p. 390 ; Koch Syn. F]. Germ, et Helv. ed. 3, p. 640 ; Sowerby's 

 Engl. Bot. X. p. 46, tab. I5S2 ; A. Gray Man. Bot. ed. 5, p. 569 ; Benth. 

 HandU Brit. Fl. ed. 5, p. 478; Hook. fil. Stud. Fl. Brit. Tsl. ed. 3,. p. 

 446 ; Miq. Prol. Fl. Jap. p. 77, et Cat. Mus. Bot. Lugd.-Bat., Fl. Jap. 

 p. 119; Franch. et Sav. Enum. PL Jap. 11. p. 121; Brit, et Br. III. Fl. 

 N. Un.St. et Can. I. p. 277, fig. 651. 



Schvenus albus Linn. Sp. PI. p. 44 ; Richt. Cod. n. 373 ; Houtt. Nat„ 

 Hist. XXXI. p. 5S ; Willd. Sp. PI. I. p. 267 ; Pers. Syn. PI. I. p. 59 ; 

 Ait. Hort. Kevv. ed. 2, I. p. 127; Michx. Fl. Bor. Amer. I. p. 36. 



Mariscus albus Gilib. 



liynchospova alba var. a. Vahl. 1. c. p. 236. 



(PI. YII. fig. 12, a. b.) 



Ca3spitose, green, estoloniferous, attaining 50cm. or more in height ; 

 rhizome very short, densely and fasciculately rooting. Culm erect, slender, 

 very laxly pauci-foliate, sub-scabrous above. Leaves angustato-linear or 

 setaceo-linear, attaining 2mm. broad, much shorter or sometimes more or 

 less longer than the culm, trigonous and scabrous in the apical portion, 

 obtuse at the apex. Corymb flat on the top, capitately subcom pound 

 in the terminal one and attaining IJcm. in diameter, the lateral one none 

 or usually one or rarely tw^o, in small cluster and peduncled, arising from 

 the superior axils ; outer floral bracts slightly exceeding the corymb, setaceous. 

 Spicuhe fasciculate, nearly white, but pale fulvous when dried, linear- 

 lancf^olate, subulate, 6mra, long, 2-flowered. Empty glumes 3-5, ovato- 

 lanceolate : flowering ones longer, oblong-lanceolate. Seta3 11-14, unequal 

 in length, the longest one equal to or slightly exceeding the rostrum of the 

 mature achene, retrorsely scabrous, but antrorsely plumoso-ciliated at the 

 base, pale-fulv^ous. Stamens 2 ; filament lower than the style. Achene 

 elliptico-obovate, contracted at the base, biconvex, 2mm. long, pale-flavescent 

 or pale-fuliginous, nearly smooth ; rostrum slightly shorter than the achene, 

 conical, acuminate ; style deeply bifid, the branches § as long as the main 

 portion. 



Hab. Hokkaido (R. Yatabe ! herb. Sc. Coll. Imp. Univ. Tokyo, Aug. 

 1878); Prov. Suo ; Osaba-mura {D. Nahai\ herb, ibid. June 27, 1891); 



