THE PARASITIC KXoAScKAK. U9 



has pn Dressed side by side. He shows th;it Kxoa>ceac. livi 

 on related hosts, agree so closely in their aseoy.-nous form-. 

 that it is evident tlu-y arc irucrically related species. < MI tin- 

 ground he sets \\\> a genus containing many species, and name- 

 it F/>/t,-in.<(. According to the host-plants, this genus i- 

 divided into four stems, and from it twenty-five species are 

 separated off as the -ciiu^ JA///////.W/". (licsenha-.-ir- <y-tematic 

 division, idves a synopsis of the host-plants and their distri- 

 bution as follow > : 



I. C.enus. Taphrina : asci club-shaped to cylindrical. 

 A. /'/'/ /V.x-steni, on Ferns: asci slender, club-shaped; taperin- to 

 both ends, rounded apex, greatest breadth in the upper quarter 

 of the ascus. 



T. cornu cervi (Giesh.) on Asju'i/imn urixtntn m in Ka-t 



Indies and Polynesia. 

 T. jilii-iiin (Rostr.) on J.sy// ( /////// spinulosum in Scan- 



dinavia and Balkan-peninsula. 



T. Laurencia ((liesh.) on I'tn-i* Y"""'''"'"''"'" ni <'<--yl"n. 

 T. j'*i,--'i,-iil<it<i (Lag. et Sad.) on ^ 'y*// ///////// in Smith 



America. 

 T. lutescens (Hostr.) on J.sy^W////// T/i<////if> ,-i* in 1'enmark. 



ii. /////'A/-stem on Jviiftorae: asci ]ilump, cylindrical, with 

 rounded apex or even a slight depression there. 



(1) (in Ulmaceae: T. ///////' (.lohan.) on T///M/.S montana and 

 U. fi in t>'*ti'i* in Central Kurope ami North America. 

 7'. r-///x (Sad.) on Celtic aiistralis in North Italy and 

 Switzerland. 



(-) < Ml J 



T. iilfi'inn (.lohan.) on H. nana in Scandinavia 



T. mi, i, i (.lohan.) on />'. mnm in Scandina\'ia. 



'/'. 1,,-hiln, (.lohan.) on 1>. verrucosa, /'. pubescens, and //. 



turkestanica in Central Kurope. 

 '/'. Ixhilniii (llo.-ir.) on 11. fiul ..... // and //. odorata iii 



(ierniany, Denmark, ami Scamlinax ia 

 T. <-rni (.lohan.) on /'. i>ili>,-nfii. //. pubescens, /'. nana, 



I',, intermedia in Scandinavia, 'I'yrol. and Silc-ia. 



T. iiin-f, ,-i !*/!, i-iiiinii (.lohan.) on /'. inni'i in Scandinavia 



ami 



