Dothiora. 



The spherical apothecia are embedded in the substratum, which 

 they rupture into lobes, while they them-elve> dehisce by 

 iriegular fissure-. The club-shaped a-.-i contain eight colourle-^ 

 or yellow, club-shaped or spindle-<haped. multicellular spore-, 

 raraphyso are never present. 



Dothiora sphaeroides (Pers.) is regarded by llu-trup as the 

 cause of a di>ea>e of the Lombardy poplar (J'<>f>n/n* y/_///w/,//,/,///x), 

 in which the branche-, particularly tho.-e of the upper part 

 of the tree, die one after another till all are gone. The spores 

 are club-shaped and constricted at the middle ; each half i- 

 divided by four or live crOSS-septa, and each cell so formed 

 is again subdivided by a longitudinal septum. 



Vuillemin ascribes the same disease t" /;/</////M/.sy///*> ,-l 

 populina \'uill. (seep. '2]X). 



According to Uehm, J>. sphaeroides al-u occurs on I',,^///ns 

 in in i/ln, and is distinguishable from Ii<>. ,///////'-< < Kr. ) on both 

 ' and /'. fi-i iiii'lu. 



Heterosphaeria. 



The ,-plieiical ajmthecia are at iir.-t embedded, but later emerge 

 through the covering layers and dehi-ee. their apices bieakin- 

 up into teeth-like lol )i.->: they are dark-brown or black in colour. 

 The asci are club-.-haped and contain ei-ht spores, \\hieh are 

 Colourless, oblon- or club-sliaped. and consist of one. t\\... or 



toll!' Cells. lodille colours the pole- ol' tile ascj blue. The 



iphj 968 are coluiu-le and t blead-like. 



Heterosphaeria Patella Tudej. (I'.ritain and U.S. Amen. 



Tin- asci contain ei-hl liicellular spores. The paraphy-e- are 

 thread-like and septate, some bein- lurked or branched : they 

 bear scalpel-^hajied cunidia. 



The ni.itiire apothecia are found chietU on the stems 

 \arious f'/ii/>i ////' /'" . '.,'/. Daucus CdTota, A n< ill n in graveoL 

 Petroselinutn ^'////-/////. I'n^iiinni, eic. A \ariety alpestris occurs 



amount tlie nioiintains on //- acleiim >'/'//<'////////////. aKo on 



tiiiini lut, a. \', i-iif i i/ 111 i-ii'itl.. el b'ehm and others belicxe 



thai ill.' fuiejii- atlai-k- li\ili;j 'jiveii ]>arl- of plalit -. a n. I leach. -^ 



maturity in the lullnu in- \.-ar mi the killed oi 



