192 
cases, and none, as a rule, where the cells are more 
than 48 hours old. 
6. Possibly a sexual process is necessary. (See Note.) 
BIBLIOGRAPHY. 
1. Hansen. Les ascospores chez le genre Saccharo- 
myces. Compt. rend. des Middels. fra 
Carlsb. Lab. IL, 1883. 
2. Klebs. Zur Physiologie der Fortpfl, einiger Pilze. 
Prings. Jahrb. XXXV. 
Z ieee cytologiques sur la cellule de 
3. Janssens an + Levure. La Cellule T XIV. Fasciem 
Leblanc. | 
pp. 203-243. 
NoTrE.—An account of the sexual process, occurring in certain Yeasts, has 
recently been published. (Barker. Sexual Spore-l’ormation in Yeasts. Ann. 
Bot. Dec. 1901.) A short discussion of the question of the sexuality of the 
Saccharomycetes in general will be found in that paper. 
FUNGI NEW TO BRITAIN.* 
By Annie Lorrain Smith, &e. 
Mucor erectus Bain. Ann. Sci. Nat. Ser. 6, Vol. 19, p. 207. 
Sporangiophores upright, somewhat flaccid, forming silky tufts up 
to I c.m. or more high, much branched, the branches varying in 
length, septate just above the insertion of each branch ; sporangia 
terminal on the main stem and branches, small, globose up to 120m iN 
diameter, somewhat yellowish, transparent, smooth ; columella glo- 
bose, usually about 40m in diameter; spores elliptical, varying in size, 
mostly flat on one side, 5-104 X 2°5-5p, colourless, shewing dark in 
the mass; zygospores globose, 40-65 in diameter, the exospore 
yellowish or reddish-brown, with darker, star-like, flat markings; 
azygospores similar to the zygospores; gemmae varying in form, 
finely spinous, colourless. 
On bread, decaying potatoes, &c. Found on farm-seeds that were 
being tested for germination. Norwood, June, 1901. PI. ix., fig. 6. 
* Owing to lack of space it has been impossible to reprint the descriptions of species 
that have already been published in this country other than those on Plate IX. 
The student is referred to the Journals quoted in this list for a complete account 
of the fungi new to sciénce or new to Britain. 
