61 



Et'iophm'um ajpet-inum Linn, Sp. PI. ed. 2, I. p. 77 ; Richt. Cod. n. 

 442 ; Willd. Sp. PI. I. p. 313. 



Scirpus cyperinus Kunth Enuoi. PI. II. p. 170 ; Britt. et Br. III. Fl. 

 N. Un. St. et Can. I. p. 271, fig. 636. 



Triclioplioriim cyperinum Pers. 8yn. PI. I, p. 69, excl. syn. 

 Michx. 



Erioj)]mnim cyperinum var. laxum Wats, et Coult. in A. Gray, Man. 

 Bot. ed. 6, p. 582. 



Scirpus Eriophorum var. cyperinus A. Gray, Man. Bot. ed. 2, p. 501, 

 et ed. 5, p. 565. 



Scirpus Eriophorum /3. Boeck. in Linnasa XXXVI. p. 732. 



Scirpus thyrsijiorus Willd. herb. n. 1241, fol. 4, ex Kunth I. c. 



Hab. North America. 



/9. Eriophorum (Michx.) 0. Kuntze I.e.; Britt. 'in Trans. N. Y. Acad. 

 Sc. II. (1892) p. 82'; Britt. et Br. I.e. 



Scirpus Eriopliorum Michx. Fl. Bor. Am. I, p. 33 ; Kunth Enum. 

 PI. II. p. 170; Boeck. in Linnrea XXXVI. p. 731; Rcem. et Schult. Syst. 

 Veg. II. p. 147, excl. syn. ; A. Gray, Man. Bot. ed. 5, p. 565. 



Eriophorum cyperinum Vahl herb, ex Kunth 1. c. 



Scirpus thyrsifim^us Willd. herb. n. 1241, fol. 1-3, ex Kunth 1. c, et 

 Enum. PI. Hort. Bot. Berol. p. 78, excl. syn. 



Panicle decompound, copiously spiculose. Spiculaa 1-4-aggregate, 

 globoso-ellipsoid, 3-4 mm. long. Sette sometimes not enlarged above and 

 not scabrous or obscurely so (as in those of the American form), but usunlly 

 slightly enlarged and serra to-scabrous above. 



Nom. Jap. Ezo-ahuragaya, 



Hah. Prov. Kushiro in Hokkaido {K. Miyahe ! herb. Sc. Coll. Imp. 

 Univ. Tokyo, Aug. 13, 1884) ; Prov. Oshima : Hakodate {B. Yatabe ! herb, 

 ibid. Aug. 10, 1878) ; Prov. Iburi : Tomakomai (J. 31atsumura ! herb, 

 ibid. Aug. 13, 1899); Prov. Mutsu : Tokiwano {T. IivaJcaival herb. ibid. 

 July 25, 1880) ; Prov. Shimotsuke : Nikko (7?. Yatabe ! herb, ibid, Aug. 

 3, 1877 ; K. Sawada ! herb. ibid. Sept. 29, 1879) ; Prov. Rikuchu : Near 

 Itsukushi {T. Makino ! Aug. 1890). 



Common in northern Japan. In the Japanese form, the setre are 

 usually somewhat enlarged and serrato-scabrous above. 



f. COncolor (Maxim.) Makino. 



Scirpus concolo^' Maxim, in Mel. Biol. XII. p. 556 (1886). 



? Scirpus Eriophorum Boeck. in Engler's Bot. Jahrb. VI. p. 51, non 

 Michx. 



