52 MISSOURI BOTANICAL GARDEN. 
following manner amongst the different islands of the 
group :— 
San Miguel, 49. Pico, 8. 
Sta. Maria, 36. Terceira, 6. 
Flores, 16. Corvo, 3. 
Fayal, 14. San Jorge, 1.* 
Graciosa, 9. 
The mere fact that several of the most important islands, 
like San Jorge, Terceira and Pico, do not, as yet, muster 
together more than 14 species, shows how much there is 
still to be done to arrive at a satisfactory knowledge of the 
bryological vegetation of this small cluster of islands, and I 
feel assured that careful investigation might easily double 
the number of species now known. 
As could easily be concluded from the geographical sit- 
uation of the islands, their bryological vegetation is in close 
relationship on the one hand with the vegetation of Madeira 
and the Canaries, and on the other with that of the Spanish 
peninsula and the shores of the Mediterranean. Out of 
the 80 species found in the Azores, about fifty are to be met 
with at Madeira and in the Canary islands, and sixty-one 
in Europe, especially in the Mediterranean region, and in 
Algeria. About forty are found also in North America. 
A few species show some relationship between the bryo- 
logical vegetation of the Azores and that of more distant 
regions. Thus, Fissidens asplenioides Hedw., widely dis- 
tributed in the tropical parts of America, exists or is, at 
least, represented by very similar forms in the Azores, 
Madeira, the Canaries, Tristan d’Acunha, New Zealand and 
Tasmania. A small Philonotis, gathered by Mr. Trelease 
at Flores, is, to my mind, not different from P. obtusata 
C. Miill., from Madagascar. The genus Sciaromium, 
which counts three species at the Azores, has nearly all its 
* Eight species are mentioned ina general way, as occurring in the 
Azores, without any more particular indication. 
