12 IS ;n- * #1! ^t % m- *. m m r~. m ^ -^ 



Gmclini (I.cdeb ) Mijabc distinctly in tlic materials from Saghalien and the 

 west cciast nf Hokkaido. I may here add briefly the result of experiments 

 with the Ihilskaido ])lants which show clearly the fact that the ;;eneral shape 

 of the lea\es remained constant within a certain limit of mould, so that no 

 one can exju ct from the stock having cnncate pinnatilobed leaves, subcuneatc 

 jiinnatifu'd fan-shajx-d leaves tlie next year. 



Let ns now turn our attention to owe Hokkaido flora. Miquel'^ said 

 tliat his Vc/.o specimen, though lie iilentified it as Laicanthcmnni arcticum 

 DC, may r:;ther rationall)' l)e transferee! to Lcucantlwuiuin Gmclini Ledeb., 

 as the incisions of the k-a\'es are deeper than in the ease of the Amur speci- 

 mens of Lciicaiitliciiiiiiii arcticuiH. I'ranchet and Savatier'-^ called Maximo- 

 wicz's Hak'odatc specimen L arcticum UC. which, we learn from the note 

 of Mi}'afie's''^ "The flora of Kurile Islands," that this form is not quite the 

 same as his Kmile s]iecimens. 



In the preceiling paragraphs I have made a hasty review of some pro- 

 minent literature on tlu- subjt:ct and I ha\'e come to the conclusion: (i) in 

 the arctic littoral regions Chi-ysantltciimm arcticnin L. and Ch. Gmelini 

 (Ledeb.) ]\liyalie are distinguishable, while Ch. sibiricuin l-'isch. is an inland 

 l)lant : (2) the forms of radical lea\es and of involuclar scales arc the 

 primär}- important distinctiw characters while other characters are of secon- 

 ilary importance: (3) most of the Yezo and ITonshiu forms may be different 

 from those of Kamtschatka. 



1. Chrysanthemum yezoense ^laekawa. sp. nov. (PI. i figs. 5-13.) 

 LcuciiiithcniHin <ircficn;n Miq., Prol. Fl. Jap. p. 166 (non DC). Chry- 

 sauthcniinit arcticum Fr. et Sav., r.nuni. I'l. Jap. \'ol. I., p. 234. (non L.) 



Caulis plerumque ascendens, striatus, ramosus, giaber. Folia glabra, 

 basi ciuieata, sub-cuneata vel late sub-cuneata ; radicalia et caulina inferiora 

 longc ])etiolata ; lamina pinnatifida \el pinnatilobata, lobis plus-minus inciso- 



i) Miqucl, Prol, Fl. Jap. p. 106. 



2) l-'ranchet et Bavatior, Enum. riiiit. \'oL I., p. 234. 



S) Miyal.L-, 1. c, p. 242. 



