250 THE JOURNAL OF BOTANY 
came nearest to H. surrejanum, and this now proves to have been 
correct._-Epwarp S. MarsHanu. 
Fertiization anp Spore-rirenine 1x Mosses.—A. Grimme (in 
Hedwigia xlii. pp. 1-75) has investigated carefully the exact time 
when fertilization occurs in 207 species of mosses growing in 
ingi Lower Hesse, and the subsequent period that 
elapses till the spores are ripe. All previous records, save those of 
Arnell for Scandinavian species, he finds to be untrustworthy. The 
characters that betoken maturity in the antheridia and archegonia 
are indicated. As the archegonia persist for a much shorter period 
than the antheridia, a monoicous inflores 
unisexual, Dichogamy m 
sponding results obtained by Arnell in Scandinavia are added, and 
So the times of spore-ripeness as recorded by Limpricht. The 
ridia and archegonia are mature at the same time, and thus tend to 
make cross-fertilization impossible. The author is doubtless justi- 
fied in the belief that his observations will be of great help, not 
re 
to know the exact time when to hunt for fresh specimens bearing 
mipe Spores, or exhibiting the process of fertilization, a stage 
which is of such limited duration, owing to the short life of the 
Papceonis. Antheridia may often be found at other seasons.— 
.. Gupp. 
