62 



The peritliecia appeared to belong to the genus Nectria; as 

 it could be identified with none of the existing species, the 

 description of this new species is given below. 



In their monography on the genus Fusariuui ^) Appei. and 

 WoLLENvvKBER spcakiug about Fusarhnn tJieohromae (p. 158) 

 write: "Eiu groszes Hemmnis der Erkenntnis scheint das Be- 

 streben vieler Forscher zu sein, hinter jedem Fusarivin die 

 Nebenfruchtform einer Nectria zu vermuten". This supposition 

 has become a certainty now as to Fusarium theohromae. 



Lately Osterwalder ^) has given an enumeration of the Fil- 

 sariums, of w^hich it has been proved that they belong to a 

 higher fungus; to the six mentioned there {F. aqiiaeductum 

 Radlk. et Rabenh., F. vasinfectum Atk., F. nvvale Sorauer, F. 

 rostratum App. et Woll., F. spec, de Jonge, F. Ruhi Osterw.) 

 we can add Fusarium theohromae Appel et Strunk. 



A pure culture of one of the ^6c/ri(i^-producing strains of 

 Fusarium theobromae has been sent to the ,,Centralstelle fiir 

 Pilzkulturen" in Amsterdam. This strain X was started from 

 one ascospore. 



NECTRIA CANCRI NOVA SPECIES. 



{Fusarium theobromae Appel et Strunk). 



Perithecia 400 — 500 mikron high, diameter 300—400 mikron, 

 orangered, lighter when young, darker when old, isolated or 

 in groups, without stroma, sessile, spherical when young, af- 

 terwards with a distinct rostrum and ostium. Without para- 

 physes between the asci, near the ostium with hairs. 



Asci 90 X 6 mikron, obtuse at the top, narower at the base. 



i) Appel, 0., iind Wollenweber, H. W., Griindlagen einer MonograpViie der 

 Gattiiiif]!; Fusarhnn. Aib. a. d. Kais. Biol. Anstalt f. Land- und For8t\virtschaft. 

 Berlin 1910. 



2) Osterwalder, A., Ueber eine neiie auf kranken Himbeerwurzeln vorkommende 

 Nectria und die dazn geliorige Fusarium-Generniion. Ber. d. d. Bot. Ges. XXIX, 

 1911, p. 611. 



