HYHK'MY. ' ' ES. 49 



The group is subdivided into tin.- families of the 

 Dematiea>\ ,sv ///>.//*, and Tidtercularieae} 



i. FAM. MUCEDINEAE. 



1. SKIT. AMK.I:II'HI;AK. 

 1. 



Oospora. 



('uniilia, transparent or only slightly coloured, globos ..... 

 "V< lid, non-septate, and produced in regular chains from simple 

 short conidiophores ; they thus resemble the genus Torulu in the 



1)> unit ii 'ii . 



Oospora scabies Thaxt.- is said to cause the well-known 

 scab ir scurf on beet and potato. This consists in jmrt inn-; of 

 the -111 face of the subterranean tubers swelling out as roii'di 



O ~ 



brown excrescences. <>thrr authors ascribe tliis disease to 

 bacteria. 



Microstroma. 



('oiiiilia unicellular, tr;m-pa]vnt, oval, and shortly -talked. 



Microstroma album <Iesm.). This, although eommnn on 

 living leaves of several sjeeies of Qitercus, is not a serion* 

 disease. The eonidial jiati-hes on the under side of the leave- 

 are white ami very thin. ( I'.ritain. ) 



M. juglandis i lli'ren-'. ) frequents the leaves of .liujhi,,^ regia 

 and ./. cinerea in Murope and Noi-th America. 



Monilia. 



('onidia oval or spindle-shaped, and produced in ehain> from 

 branched conidiophores. 



Monilia fructigena I'd-. (I'.ritain and [J.S. America.) This 



i- the cause nf crrtaill widespread dl-ea-r- the broWII-1'ot .if 



cln'ii\ and plum, the peach-i'ot, and a rot mi apples and pt 

 It has been the .-nhjert ,,|' many p.ipn-s since Tliiuiien ! 

 i|e-d ibrd it in 1X7'.'. All j.aii -i|' ihr li,,-i are attacked, ami 



1 Till-, i-. t In- ;i' lit tnlluU I.I li\ \l I -..,/,''/' .' . \ ,i|. 



in. : tln-rr t In- 1 1 i of the vsriotu snb-diviaioiu may be obtained. 1 1-Mit. > 



-'II ' /. , ~-''lt,,:ll, //'///'. iM'e 



Amongst tin- in^o un| i.rtani ill -. i i|ii inr ! im-n. /' ,r /' 



1->7'.| : Smith (Worth. G.), Gardener's Chronicle, \^~>. \>. .">_' ; Arthur, A > 

 . l'// " - I. * , iv., 1885. 



I' i 



