POTTIACEAE. 135 
the peristome is frequently betes and when present short, of often 
fragmentary, lanceolate, not filiform teeth ; the spores usually large. The 
leaves are generally more or less spathulate, the upper pas rather lax, 
but often obscured by papillae. 
Most Sg Bh Ke of the fifteen new species described by R. Brown 
Ay 
under Pottia and Anacalypta, only three exist in his herbarium. The 
following ee is based partly upon a careful study of his deserip- 
tion and figures, partly upon oe from other sources which I have 
been able to identify, with a fair degree of certainty, with one or other of 
r 
work, even if I should have ae made an erroneous reduction of 
his species in one case or another 
KEY TO THE SPECIES, 
A. Subgenus Schizophascum C. M. (Dendia R. Br. ter. in Trans. N.Z. Inst., vol. 30, 
Capsule without a differentiated lid, splitting horizontally about the middle 
maritima, 
B. Subgenus Pottia sensu stricto Broth. Lid differentiated, separat ne 
. Peristome present. Leaves minute, lid shortly conical . 2. zealandiae. 
II. Peristome wanting; ; lid beaked. 
A. edo. 
argi 5. Alfredii, 
B. Margin pion 
a. Leaf-apex toothed 
* Seta }-? in. ae < os ee 3. Heimii. 
** Seta fin. ze = - ve 4, serrata, 
6. Leaves entire 
* Nerve open : i aa -- 3%. Stevensii. 
nute, a Laie small, yi vag era sub- 
plane ; cells large By 6. areolata. 
+t igen oases long, erect, concave .. 7. longifolia. 
l. Pottia mari R. Br. ter.) Broth. in Engler and Prantl, Pflan- 
ma ( 
zenfam., Musei i, 423. 
Syn. Dendia maritima R. Br. ter. in Trans. N.Z. Inst., vol. 30, p. 411 
ous and interesting moss is well recognized not only by the 
peculiar fruiting character, but by the rather large, erect, very wide and 
very concave, almos mane pellucid leaves, with subobtuse apex, 
apiculate with the oo nerv 
The peculiarity of the capsule, ‘fo bes the lid does not separate, but 
which splits across a median zone—usually, I believe, along the transverse 
B 
reason for thinking the aueeenion a plausible one made to me in a eked 
from E. S. Salmon, who had carefully studied material sent him by 
that the character may not aay not be a generic one, but a pathologic it one 
* Since the above was in saver I have received from Mr. G. Brown specimens of 
nearly all Brown’s fate of P. These have entirely confirmed the conclusions at 
i arrived, ‘ail | it is very satisfactory to be able to base them not on 
conjecture but on oan examination of the plants.—H. N. D 
