BRYACEAE, 203 
described by him as B. Harriottii Ne am unaware of the significance of the 
specific name, but presume if has rsonal age ts It is a form with 
a larger capsule than the plant I first described as A. densum. I detected 
a somewhat similar form in a tuft of B. sooallatie Mitt., also collected by 
rown, January, 1900, on Mount Torlesse, where, however, the capsule, 
though longer, was less turgid; except in this respect all the plants agree 
exactly. 
The known genoa are*as follows: Wet banks near the Weka Pass, 
River, on wet adi Fasianey, 1900 (Bryum sp. nov. in herb. R. wn) : 
all collected by R. Brown. Paparoa Range, South Island, 1885 ib "1888, 
coll. R. Helms 
$ 
A. Harriottii is the only egress pecies of the genus in the Australasian 
region, with the exception of - mbifolium (Lindb.) Broth., Mri was 
collected in North opera Ye in 1913 by the late Rev. W. W. Watts. It 
cannot easily be mistaken for anything else. 
Bryum Dill. emend. Schimp., Syn. (1860). 
Some eighty or ninety names have been found for the various New Zealand 
forms of this, the largest genus of mosses. Out of this welter of names it 
seemed at first hopeless to evolve any practical and yet natural arrange- 
ment ; but a study of the plants themselves led to a more hopeful outlook. 
primarily because it became at once evident that in the case of two or three 
of the species one had to do with very plastic types, and it was out of these 
that the larger number of the “ specie. ad been formed. Pre-eminently 
was this the case with the species listed below as °B. bulbillosum Mont., 
B. ecurvicollum Mitt., and B. ak ae C. M., and to a less extent with 
B. pachytheca C. M. and B. truncorum Brid. 
The variability is mostly hesig ae to the vegetative organs, so much so 
in several cases that I believe it is Sore possible to distinguish some of 
the above species except by the fruit. If due heed be given to the fruiting 
although in one o species it is Specter & 
The most reget nied arrangement, perhaps, of Bryum (that followed in 
the “ Musci’’) divides the genus into two sections: (1) Ptychostomum, 
the main characters of which are that the inner “ail of the outer teeth of 
the peristome is not furrowed or perforated, and has the lamellae connected 
with one another on the ventral surface by irregular ds, while the 
endostome is usually more or less adherent to the ane! teeth, the cilia are 
without appendages and are frequently rudimentary or wanting; 
(2) Bryotypus, in which the inner ha of ae — opel are 
not connected together. This section is divided into two 
(a) Cladodium, with the cilia not appendiculate, often sidimnentary eee 
rarely appendiculate), the endostome often adherent, and the! inner layer of 
the outer teeth sometimes furrowed or perforated ; (b) Eu- , with the 
cilia nearly always appendiculate, and the endostome free. 
