Ill 



a number of parasitic diseases not yet known to planter or plant 

 pathologist: and this is where we would like only too well to begin 

 our knowledge of all plant diseases. 



During a recent short term of service at the Botanic Gardens, 

 Singapore, in the heart of the oriental rubber region, I began a 

 simple census of the fungi to be found, in fruiting forms, on 

 Hevea. The cutting short of my stay stopped the work almost 

 as it Avas begun ; l)ut the meagre results obtained have been most 

 astounding and indicate the almost complete former neglect of this 

 subject in a country where it should have been receiving, long since, 

 the most intensive attention. Out of the first fourteen fungi en- 

 countered, other than Basidiomycetes, ten ivere forms whollij new 

 to science and one represented a distinct new genus! These have 

 l)een determined bv Saccardo, the dean of living mycologists, (in 

 Bull. Orto Botan." E. Fniv. di Napoli, YI, (1918), 40-65), as 

 follows : — 



On dying leaves. 



Sphardla heveana Sacc. sp. nov. 



On dead limbs. 



DidjjineUa oligospora Sacc. sp. nov. 



Neotrotieria puJchella Sacc. gen. and sp. nov. 



Eutjipa hidibunda Sacc. v. lieveana Sacc. var. nov. 



Crijptovalsa niicrospora Sacc. sp. nov. 



Peroneuttjpa heteracanthoides Sacc. sp. nov. 



Nummularia repandoides Fuch. var. singaporensis Sacc. 

 var. nov. 



Valdinia coneentri-ca (Bull.) Ces. v. escholzii (Ehrenb.) 



Lcmhosia glonioidea Sacc. sp. nov. 



TIgsterium lieveanum Sacc. sp. nov. 

 On rotting stumps. 



Xi/laria {Xgloglossa) tuheriformis Berk. 



XgJaria (Xi/]oglossa) ohorafa Berk. 



Xijlaria (Xgloglossa) scopiformis Mont. v. lieveana Sacc. 

 var. nov. 

 On rotting trunks. 



Pleonectria heveana Sacc. sp. nov. 



Of course it is probable that some of these are purely sapro- 

 phytic, though no one knows anything about this. It will be re- 

 cognized that a number of the genera are well known to include 

 active and most serious parasites. On the other hand both sapro- 

 phytes and parasites may be represented in one fungus genus : and 

 usually nothing final can be said without careful investigation, 

 since, as I have already stated, fruiting forms in dead or even rot- 

 ting wood may originate from mycelia actively parasitic in living 

 tissue. 



The same spirit of inquiry should be directed toward all of the 

 Basidiomycetes growing on Hevea. In the short time at mv dis- 

 posal I encountered the following on Hevea in Singapore :* 



• All determined by N. Patouillard, Neuilly-sur-Marne (Seine), France. 



