428 M. C. A. J. A. Oudemans on Endogenous 



lowing words : — " It is from this examination that I created 

 the genus Sporendonema^ and recognized that the single spe- 

 cies that it at present contains has, as its essential character: 

 tubes or filaments short, simple or branched, continuous, 

 nearly transparent, erected, grouped, one hundred and twen- 

 tieth of a millimetre in tliickness, containing in their interior, 

 and almost always throughout their whole extent, very large 

 reddish rounded sporules, slightly unequal in diameter, and 

 often very close together and pressed against each other, but 

 placed end to end upon a single line, so that the filaments 

 appear as if furnished with very closely approximated disse- 

 piments." The author proceeds : — " The escape of tlie spo- 

 rules takes place at the apex of the filaments, which, after 

 their dissemination, become quite transparent and a little 

 narrower. Sometimes, however, the sporules are set free by 

 the destruction of the excessively delicate membrane of which 

 these plants arc composed." 



The results of Desmaziferes's investigations upon the cheese- 

 luould met with no contradiction until |838. Then, however, 

 Corda, in the second part of his ' Icones Fungorum ' (p. 8), 

 stated that he could not agree with the French mycologist, 

 and that the phenomenon of endogenous spore-formation was 

 never observed by him in the numerous examples of Sjjoren- 

 donema Casei that he had examined with the greatest care. 

 He declared that he had never seen anything but chains of 

 spores, just such as he ascribed to the genus Torula. 



It must be remarked, however, that the figure which is given 

 by Corda with his text (pi. ix. fig. 36) does not at all agree 

 with the structure of the SjJorendonema-^Xinwi as it is to 

 be found in Desmazi^res's * Plantes du Nord de la France ' 

 (figs. 5 & G), so that it is not too bold to infer that the two 

 mycologists investigated different Fungi ; for which reason, 

 therefore, Corda's Torula Casei is not to be regarded as syno- 

 nymous with Desmazi^res's Sporendonema Casei. The person 

 who made this observation was Berkeley (Ann. & Mag. Nat. 

 Hist. ser. 2, vol. v. p. 460), and I liave had the opportunity 

 of convincing myself of its correctness. 



With the conclusion just expressed, the importance which 

 otherwise would attach to Corda's investigation falls to the 

 ground. On the other hand, however, the correctness of 

 Desmazi^res's deduction can by no means be inferred from the 

 negative result of Corda's investigation. Berkeley, in the 

 same part of the above-cited Journal, showed upon good 

 grounds that the genus Sporendonema had no raison d'etre^ 

 and that Sporendonema Casei must be removed into the genus 

 Torula. On account of the difterence between the Fungi in- 



