W. Batk8(»n 95 



of chlorophyll is cnrriiHi a Htn^e fiirthtT. In this, not only in the nUMn 

 whitv, but the pt^tioloH ami thr ccntrrs of th»' havi's and HtipulfH an* 

 also throughout thfir thirkness dostitutr of rhlomphyll. Of thJH 

 condition I know only two |K»rfi'ct examples, a ////(/m/u/ra aini \\u' 

 PelRrgt>niuni "Freak of Xatun*" niis<M| l>y Mrssi^ (aiinrll. DrtaiU <»! 

 the»e planU will l>o j^iven in a sul)S('<|uent |Ni|K'r. 



The oocum»nce to which I wish now to cjili attention is a Humaiic 

 change such that a sjwrt arises in which the relative positions of the 

 green ami whit^' jwrt.s are reversed. This phenomenon of (•(unjilete 

 reversjvl has now occurri'd in five? distinct plants, Knouymnit japoniruM 

 Uttifoltus, Coprosma Baueri, and three Pelargoniums, viz. an ivy-leaved 

 variety, and two of the zonal class, Mmc Solleroi and ('aroline Schmidt. 

 In none of the examples is any evidence forthcoming jus to the cause of 

 the change, nor can any suggestion be offered as to the natun; of the 

 disturbance provoking it. 



Euouymus japouicus latifolius van variegata. 



On the occasion of a visit to Messrs May's nurseries the reversed 

 specimen was noticed among a large batch of well-grown plants of thi,s 

 horticultunil variety. The shoot of the green-skinned form' was a 

 strong branch arising in a sharply marked area of the stem, well above 

 the level at which the cutting had been divided from the original plant. 

 The growing point of the main stem must, at the i)oint from which 

 the sport arose, have formed simultaneously a white-skinned and a 

 green-skinned segment, and in this latter area a bud had arisen which 

 developed into the green-skinned branch. Neither among the many 

 plants seen at Messrs May's nor among numerous specimens of the 

 variety since examined in various gardens, including several very large 

 plants many feet high, has any similar piece been met with. Hut 

 wholly white and wholly green areas are formed not uncommonly on 

 the white-skinned variety. If in such an area a bud is included, it 

 gives rise of course to a branch wholly white or wholly green as the 

 case may be. In Fig. 3 a leaf having such a wholly green area is 

 shown. The green-skinned form, on the contrary, though a considerable 

 quantity of it has now been grown, has not produced any substantial 

 variation. In it, as in the white-skinned form, the number of cell- 

 layers forming the "skin " is sometimes greater and sometimes less, but 

 no white areas or white-skinned parts have appeared. The sU'm in 

 this case is green. 



' Mr Bintner tells rae that this variety is grown in continental nurseries under the 

 name of Due dWrxjou. 



