﻿406 ON THE BOTANY OF JAPAN. 



and a new species, related to E. JEsula of the Old World, and to the unpublished E. 

 leptocera, Engelm., of California* 



There are no novelties among the UrticacecE. Laportea hulbifera, Sieb. & Zucc., I may 

 remark, has the pedicels of the female flowers articulated as distinctly as those of the 

 other sex. This and L. terminalis (also Himalayan) closely represent our L. Cana- 

 densis, while the genus is absent from Western America ; as also is Pilea, though 

 represented by related species m Eastern America and Japan. 



The common Hop is indigenous all round the northern temperate zone, and there 

 is a second species in Japan and the \icinity. 



Celtis, Elms, Madura, and Mulberry-trees are all absent from Western North America, 

 but all represented in Japan and in Eastern North America, and by nearly related 

 species. Ulmus parvifolia much resembles U. crassifolia, Nutt., of Louisiana and Texas. 



Jughndece are not indigenous either to Europe or to Western America. But Siebold 

 and Zuccarini mention a Japanese Juglans, — probably the one which Thunberg re- 

 ferred to the American Black Walnut ; likewise a Platycarya, and two species of the 

 Caucasian genus Pterocarya. Thd latter would appear from IMr. Wright's specimens to 

 be mere forms of one species. 



Cupulifera:. Most of the numerous Japanese Oaks are of Asiatic types. There is 

 one, somewhat intermediate in foliage between Qiiercus Hex and Q. cocci/era, which 

 seems to be new.-|* 



Castanea Japonica, Blume, looks different from the common Chestnut, but exhibits 

 no decisive characters. The smoother forms are more like the European than the 

 American C. vesca ; the canescent ones resemble om* C. pumila. Both American 

 Chestnuts are strictly confined to the Atlantic side of the continent ; and C. vesca ap- 



* EuPHOEBiA GuiLiELMi (sp. nov.) : glaberrima ; caule 1 - 2-pedali e rhizomate repente ; umbella 5 - G- 

 fida, radiis dichotomis ; foliis sessilibus subtus glaucescentibus integerximis obtusis vel retusis, caulinis sparsis 

 oblongis sen spathulato-oblongis basi attenuatis, involucralibus conformibus sed paullo majoribus basi obtusiori- 

 bus, involucellis imis triangulari-oblongis, ultimis acuris, omnibus longioribus quflm latioribus ; glandulis lunatis 

 longe et subparallele bicomibus ; capsula seminibusque glaberrimis. Yokuhama, Williams Sf Morrow. Simoda, 

 Hakodadi. 



t QuERCUs PHiLLTK^oiDES (sp. nov.) : ramulis novellis (cum petiolis 2-3 lin. longis) gilvo-tomentellis ; 

 foliis coriaceis perennantibus ellipticis oblongisve rarius sub-obovatis obtusiusculis (1 -2-poUic.) basi rotundatis 

 ultra medium subserratis glabris, noveUis subtus vel costa utrlnque furfuraceo-tomentulosis, venis divergenti- 

 bus inconspicuis ; amentis masculis filiformibus laxis ; floribus 4 - 5-andris ; cupula crateriformi albido-tomen- 

 tosa (squamis brevissimis arcte appressis) glande multo breviore. Simoda, Williams ^ Morrow (in flower). 

 Tanegasima. 



