BOTANICAL GAZETTE 
FUNE, 1896. 
Contributions from the Cryptogamie Laboratory of Har- 
vard University. XXXY. 
New or peculiar aquatic fungi. 4. Rhipidium, Sapromyces, 
and Araiospora, nov. gen. 
ROLAND THAXTER. 
WITH PLATES XXI-XXIII. 
Of the numerous aquatic forms the discovery of which we 
owe to the researches of Cornu, the four species which he 
Placed in the genus Rhipidium! are among the most interest- 
ing from their striking peculiarities as well as from the fact 
that, as far as the writer is aware, they have been observed 
y fo other botanist. It is true that Cornu regarded the 
aegelia of Reinsch as identical with one of his species of 
net idium; but, as has been mentioned in a previous note,” 
hy “ems quite unlikely that this is the case. Owing to the 
ct that Cornu’s account, which was avowedly a preliminary 
Ph itself are by no means clear. The difficulty is further 
eon from the fact that the figures just mentioned do not 
Ne ° Set to the description of the species represented in 
taint “ty important respect, so that in view of this uncer- 
| Y both as to generic and specific characters, the writer 
1 
ins ley donographie des Saprolégniées. Ann. d. Sci, Nat. Bot. V. 15: 15 ff. 
* Bot ull. Soc. Bot. de France 18:58. 1871. 
- Gazette 19: 50. 1894. 
*4—Vol. XXI.—No, 6, 
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