MATERIALS FOR A FLORA OF HOKKAIDO. III. 



JJy 

 K. MlYABE 



and 

 Y. Kudo. 



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@ ?f[5 ^ © 



X iii # # 



ERIOPHORUM L. 



Key to the species of Eriopliorum found in Hokkaido and 

 adjacent regions. 



{Bristles 6 E. alpUmm L. 

 Bristles mimeroTis 2 



/ Spikelet solitary, termin.al 3 



I Spikelets numerous, umbellate 5 



f Bristles reddish-brown. Achenes strigose on the upper margin E. slri{iosiim, nob. 



I Bristles white or light brown. Achenes not strigose on the upper m.argin 4 



' Caespitose. Sheath of the uppermost cauline leaf is bladoless and much inflated. 



J Achenes oboroid E. vnij'maiam L. 



] Stolon-bearing. Sheath of the uppermost cauline leaf is provided with a short 



V blade and not inflated. Achenes linear-oblong E. Scheuchzeri Hoppe. 



I Pcdimcles scabrous. Bristles shorter, about 5 times the length of the fruit.. £■. gracUe Koch. 

 I Pedimcles smooth. Bristles longer, 10-12 times the length of the fruit. . . E. (intiustifolium Roth. 



10. Eriophorum alpinum L. Spec PI. ed. 1. (1753) p. 53 ; Kunth, Eunra. 

 PI. 2. p. 170 ; Fr. Schm. Fl. Amgun. p. 66 ; Matsum. Ind. PI. Jap. 2. 1. p. 147 ; 

 Koidz. Tokyo Bot. Mag. 25. p. 204. 



NOM. J.M". Miyama-sagisvgc. (uov.). 



Hab. Yezo. Prov. IsLikavi : Tsuishikari (I. Yamamoto !'' Aug. 1910) ; Horomui 

 (K. Misumi !-' June 28, 1909 ; K. Miyabe !'' June 18, 1912).— Prov. Iburi : Toma- 

 komai (U. Faurie! July 1894) ; Yubulsu (Faurie, 1905 ; K. Kondo !» July 8, 1907). 



KamtsclmtlM. Petropavlovski (N. Hashimoto!-^' July 12, 1907). 



1) uj*ig^ 2) ^■mwä 3) ©sK^if 4) )S.m±-^ 5) ts^rttn 



[Trans, of Sapporo N.atural History Soc. Vol. V. Part 2. April, 1914.] 



