53 



that C a r r u t h e r s introduced into the wounds other conidia 

 besides those lie meant to use, as he himself refers to 

 the difflculty of growing the fungus in pure cultures on 

 account of bacteria and fungi. 



Of the Nectria perithecia he says: „They are to be found 

 only on dead wood or dead patches of dying branches 

 and stems." ') 



Moreover Petch, who as Carruthers' successor must 

 hâve known the Nectria with which the latter experi- 

 mented, says : „The Nectria on the stem agrées with Nectria 

 striatospora Zimm. It is perhaps the commonest Ceylon 

 Nectria and has been found on tea, killed by Massaria 

 theicola, tea with branchcanker, felled Alhizzia, etc." ^) 



Both thèse statements make it very likely, that this 

 Nectria was not a parasite, but a saprophyte. 



Whereas Carruthers^) believed the form found by him 

 to be Nectria ditissima Tul., according to P e t c h the perithecia 

 on the bark bear a close resemblance to Nectria striatospora 

 Zimm; numerous examples, coUected by Thwaites in 

 the Herbarium, hâve been named by Berkeley either 

 N. cinnabarina or N. sanguinea. 



The two forms, observed by Howard, were named by 

 Massée Nectria Thedbromae and Calonectria flavida. The 

 description of Nectria T/ieo&romae has just been publisted ^). 

 Howard could infect trees by introducing ascospores of 

 both forms into wounds. In the earlier stages of the disease 

 he observed white pustules in the cracks of the diseased 

 bark, consisting of conidiophores bearing unicellular conidia 

 and Fusariumlike, multicellular conidia. Although he 



1 ) 8ee Carruthers, 1902, p. 443. 



2) See Petch, p. 6. 



3) Carruthers, 1900, p. 7. 



4) Massée. Kew Bulletin. 1!)08. No. .^ West-Indian Bulletin. 

 Vol. IX 1908 p. 187. 



Recueil des trav. bot. Néerl. Vol. VI. 1909. 4 



