1913] CURRENT LITERATURE 465 
saturninus, M. christianiensis, M. dispersus, and-M. corticolus are described as 
new in this paper. M. norwegicus Hagem, which was described as new in the 
first paper, is here regarded as a synonym of M. (Rhizopus) nodosus (Namys- 
lowski) Hagem. 
AMYSLOWSKI? describes a new species of Zygorynchus isolated from the 
. This species, like the other species of the genus (Z. Moellerii and Z. 
heterogamus), is monoecious. 
In another paper,“ NAMYSLOWSKI has reported a long series of experi- 
ments in which, after the fashion of Kiess, he attempts to determine the 
influence of various food substances in different sgaspatie on the produc- 
tion of zygospores and sporangia by the mucors. e data do not allow of 
either general or precise conclusions, but show that a kind and concentration 
A number of short papers by different authors treat of the formation of 
zygospores and of nuclear phenomena in the mucors. LENDNER™ has examined 
the method of origin of the zygospore in a number of mucors representing both 
monoecious and dioecious species. His observations go to show that the 
gametangia originate at points where two branches of the mycelium accident- 
ally come into contact, and not, as is usually stated, on branches which grow 
toward each other as the result of some sort of a stimulus. Moreau,” who has 
studied nuclear phenomena in the hyphae and zygospores of several mucors, 
reports that the divisions in the hyphae and gametangia are normally mitotic 
and simultaneous. In the columella of Rhizopus amitotic divisions, which 
9 NamMysLowskI, B., Zygorynchus Vuilleminii, une nouvelle mucorinée isolée 
du sol et cultivée. Ann. Myc. 8:153-155. figs. 9. 1910. 
t0 NAMYSLOwsKI, B., Studien iiber Mucorineen. Bull. Intern. Acad. Sci. Cracovie. 
Ser. B. seis Jigs. 2. 
 LENDNER, A., Observationes sur les zygospores des Mucorinées. Bull. Soc. 
Bot. searing IL 2256-59. figs. 4. 1910. 
12 MorEAU, F., Premiére note sur les Mucorinées, le noyau au repos.—Le noyau 
en division: mitose et amitose. Bull. Soc. Mycol. France 2'7:204-210. figs. 12. 1911. 
, Deuxiéme note sur les Mucorinées.—Fusions de noyaux et dégénére- 
scence auciidatpe dans la zygospore.—Fusions de noyaux sans signification sexuelle. 
Tid. 334-341. figs. 4. 
, Les phénoménes internes de la reproduction sexuelle chez — 
Abucusiobos hétérogames. Bull. Soc. Bot. France §8:618-623. jigs. 4. 1911 
