24 
Journal of Mycology 
[Vol. 10 
papillatis, atris, membranaceo-subcarbonaceis, ca. 100-120 /a 
diam.; conidiis ovoideis ellipsoideis vel subcitriformibus, utrin- 
que obtusiusculis, 1-2-guttulatis, lsete brunneis, 8-10x4-5/4. 
In Beiblatt zur Hedwigia, 42:(233)-(24o), 7 Oct. 1903, 
P. Hennings publishes some interesting notes Ueber die an 
Baumen wachsenden heimischen Agariceen. Some interesting 
statements are: that Collybia velutipes occurs on various species 
of living trees (commoner however on stumps) ; Pleurotus os- 
treatus common on living trunks, seldom on stumps; Pleurotus 
ulmarius epecially on living Elm trunks, in Schlesien on Tilia; 
Pluteus cervinus mostly on stumps of deciduous trees and ever¬ 
greens, but also quite often on living trunks; Lentinus stypticus 
on stumps and on living Hazel; Schizophyllum alneum on pro¬ 
strate Ash-stems, etc., also on living Linden, commoner in the 
tropics on various living tree trunks. 
In Professor Bessey's article on Evolution in Micro¬ 
scopic Plants, Trans. Am. Micr. Soc. 24:5-12, Nov. 1903, we 
notice that the “chlorophylless members of the class of the green- 
algae (Chlorophyceae)”, the more important families being Sap- 
rolegniaceae and Peronosporaceae, show but little modification 
from that of a green felt, the former having lost the chloro¬ 
phyll, become reduced in size, and bear many zoospores; but 
the downey-mildews have become parasitic on higher (aerial) 
plants, and substituted conidia for zoospores and suppressed an- 
therozoids. The Mucoraceae are “related to the green felts” — 
and in the sexual apparatus the greatest modifications have taken 
place. 
In Mycologische Fragmente, Ann. Mycolog. i ‘. 522 -^ 4 , 
Nov. 1903, Dr. Franz v. Hohnel describes many new species and 
the following new genera: Bresadolella n. gen. Nectriacearum; 
Myxolibertella n. gen. — est Libertella vel Myxosporium cum 
sporulis fiiliformibus et oblongis (vel fusoideis) commixtis; 
Sporodiniopsis n. gen. Hyphomycetum; Cirrhomyces n. gen. 
Dematiearum; Aegeritopsis n. gen. — Tubercularieae muce- 
dineae staurosporae. In the same article he states that Cerco- 
spora platyspora E. et Holw. on Zizia integerrima, and Cerco- 
spora sii E. et Ev. on Slum cicutifolium, are the same and hochst 
wahrscheinlich synonyms of Fusicladium depressum — not Cer- 
cospora because the spores are two-celled. 
Corticium vagum B. & C. var. solanti Burt, a fruiting 
stage of Rhizoctonia solani, is reported by F. M. Rolfs in Science, 
N. S. 18:729, Dec. 4, 1903. This is based on a study of the 
Potato Rhizoctonia begun in 1901. “Observations show that 
potato plants developed from tubers which are more or less cov¬ 
ered with sclerotia of this fungus usually have their subterranean 
parts overrun with a dark brown cobweb-like mycelium. This 
frequently extends up the green stems from one to three inches 
above the ground forming a thin hymenial layer which is usu- 
