REVUE BRYOLOGIQUE 73. 
N° 10. Grimmia Austini, Kindb. This species is said to 
differ from G. Olneyi, Sull. in having the cells of the 
middle of the leaves distinctly sinuous, and the calyptra 
mitriform. This is true of G. Olneyi, also, and the lobes of 
the calyptra are shown in the Icones t. 42, but the cells of 
the middle of the leaf are not figured, though they are 
seen to be sinuous in No. 209, of Sull. & Lesq. Musci bor. 
Am. ed. 2. Kindberg fails to state that G. Austini was 
founded on No. 144 of Austin’s Musci App. as shown by 
Macoun’s specimen of which the upper corner has been cut 
out to send to Kindberg. . 
N° 19. Orthotrichum lyellioides, Kindb. Prof. Macoun 
-assures us that this is nothing more than another synonym 
for the western species of Orthotrichum which has long 
been known in our text-books as O. Lyellii, and for which 
we already had six other mames, all given by European 
bryologists ! From reading the description, there seems to 
be no other interpretation to be put upon it, in spite of the 
fact that we have cited the synonymy of this species in full 
(Bull. Torr. Bot. 20 : 397.1893) and that M. Kindberg has 
received a copy of the reprint. 
N°93. Mnium simplex, Kindb. We have already stated 
(Bull. Torr. Bot. 18 : 54.1891) that this species is the same 
as M. Roellii, Broth. (M. lucidum, Britt.}\ and comparisons 
recently made of both specimens, do not alter our opinion, 
The differences given are so slight, and the specimens 
agree so well, not only in characters but in habit and 
geographic distribution, that there is no doubt that they 
_ are the same species. We see no reason for founding a new 
_ genus or subgenus, whichever he may mean. A 
ELISABETH G. BRITTON, 
Torrey Botanical Club, New York. 
Essai d’une monographie du genre DAWSONIA, 
par le D' C. SCHLIEPHACKE et À. GEHEEB. 
Rapport préliminaire par À. GEHEEB 
Depuis longtemps on regardait comme la patrie de ce 
curieux genre de mousses l'Australie, la Tasmanie (Terre 
de Van Diemen), et la Nouvelle-Zélande. Les 4 espèces 
publiées jusqu’aujourd’hui étaient tellement distribuées 
que le Dawsonia superba Grev. était signalé de toutes les 
trois localités, tandis que les D. polytrichoides R. Br., 
D. longiseta Hpe. et D. appressa Hpe. appartenaient à 
l'Australie seule. 
