25 



into the stomata of the host, and trace its course in a section of the leaf 

 after eiitcriug Various forms under the names lecijthea, phrmjmidium, 

 coleosporio)), uredo, xenodoim, &c., are to be found in plenty ; the 

 orders Roseacece and Rubtacem aifording suitable nidus for numerous 

 kinds. Under the name Melam-'<pora, we find fungi on the cathartic 

 flax, various species of salix, St. John's wort, willow herb, enclianter's 

 nightshade, &c. The thistles and other families of the order Coviponitce, 

 afford homes for a host of fungi too numerous to mention. 



I liave instanced but a Jew of the many interesting and diverse forms 

 of this very remarkable division of plant life, and will conclude with a 

 few remarks on another division of microscopic fungi known as 

 Peronosporoi, to which division belongs that fearful pest known as the 

 Potato disease. Of the twenty-six species known in England, I have this 

 year found in the neighbourhood of Dover, no less thaa twelve, it being 

 remembered that of the twenty-six, three are regarded as doubtful species, 

 and four comparatively rare ; the finding of twelve is proof of their wide 

 dissemination. Tlie plants on which I have found Peronosporce aie, the 

 potato, common nettle, spinach, field pea, creeping ranunculus, purple 

 nettle, cultivated and ^vild cabbage, nipple wort, wood-auemoiic, poppy, 

 . dock and hedge parsley, in all, twelve. 



In addition to the genera and species mentioned, I have a large 

 number I have not yet been able to identify, making altogether about 

 one hundred and fifty species gathered for tlie one year, 



I know of no more interesting pursuit than a minute fungus 

 hunt, a sport that may be enjoyed at all seasons of the year, the spoils 

 of which aiford a never-ending source of admiration for tlieir beatity, and 

 of wonder for their peculiar and intricate modes of growth and 

 propagation. 



Short List of Leaf -fumji found (liiring the year, 1889.- 



Rcestelia lacei'iita 



Pcridennium piui 



iEcidium leucospcnuum 

 , , quactrifidum 

 ,, albescens 

 , , epilobii 

 ,, tragopogoms 

 ,, euphorbia3 

 , , periclymeni 

 , , calthje 

 , , pimpinellee 

 , , lu'ticae 

 ,, behenis 

 ,, compositarum 

 ,, viol;e 

 , , primulse 



orchidearmu 



Phragmidhim obtusatiim 



Pucciuia lapsance 

 ,, menthfe 

 , , malvacearuui 

 ,, claudestina 

 , , sparsa 

 , , syiigenesiarum 

 , , virgaiirefe 

 ,, circii 

 , , synimii 

 , , calthse 



Uromyces concentricus 



TJredo potentiEarum 

 ,, liyijcricorum 

 ,, confluens 

 , , bifrons 



Coleosporium tu.ssilagiuis 



I'hragmidium mucrouatuni Melampsora euphorbia' 

 ,, biilbosuui Cystoj)us candidus 



,, gracile ,, ciibicus 



M. C. Cooper'' s urrn»ijetnvnt. 



Lecythea ruborum 

 , , rosfc 



TJstilago antlierarum 



Peronospora iuf estaus 

 , , nivea 



,, pymaja 



, , gauglif ormis 



, , parasitica 



, , vicise 



,, effusa 



, , urtica3 



, , ficaria? 



,, lamii 



, , trif oliorum 



, , obliciua 



Uiicimila bicoruis 



Erysii^hc martii 

 ,, montagneii 

 , , liorridxda 



