114 BRYOLOGY OF NEW ZEALAND. 
some slight difference. The leaf-margin is usually plane, but occasionally 
slightly reflexed below, often on one side only ; and there is a considerable 
resemblance in many respects to the European Bee tophaceus (Brid.) 
Jur. The peristome, however, appears to be certainly Weisioid, and I 
believe that it is in its proper place in this genus 
The typical plant may be known with the lens almost at sight by the ~ 
spreading leaves, lingulate in outline, and usually very obtuse at apex 
(occasionally narrowed and subobtuse only), the nerve ceasing some 
distance below the tip; the cells are rounded, pellucid and distinct, 
usually somewhat incrassate; at base rather elongate-rectangula r, with 
the walls usually firm and coloured; but ougeeped laxer in character. 
e nerve is almost always slightly muriculate at back below the apex, 
and occasionally strongly roughened almost to the base. — cells are 
sometimes more obscure, and at times ag incrassate -than usu 
Dicranum Huttonii R. Br. ter., MS. in herb., consists of a sooty un- 
localized tuft of a plant which I think identical ‘with W. Weymouth. Tt 
has, however, a rather wider capsule, a somewhat different peristome—the 
teeth being wider, united at base, more cada and finely papillose—and 
the spores only measure 15-20 pz, while those of W. Weymouthii are 25-30 p. 
In spite of these somewhat marked differences I am pe to refer it to 
this species, which, however, needs further elucidatio 
Brown ter., “larger in all the see 
variability of the species, bat is, I think, hardly worth maintai 
99 
—— the 
(the peristome might easily be overlooked), in which case the name 
would have priority over R. Brown’s. In the absence of specimens, 
however, the change of name can hardly be safely made. 
Tri omum gracile R. Br. ter. is certainly the same thing. The 
specimen in Brown’s herbarium is labelled Tr. gracillimum, but its 
ition and number in his arrangement leave scarcely a doubt of its 
identity with the plant published as Tr. gracile. 
odway, on p. 19 of his Tasmanian Bryophyta (Mosses), describes a 
Weissia Weymouthi C. M., a name which I am unable to trace in any 
publication. The Gen. Musc. Frond. does not throw any light, as for 
some reason or other neither the genus Gymnostomum nor Weisia is to 
be found there. I conclude, therefore, that it is . name of 
C. Miiller’s, probably in Weymouth’s herbarium (no Socdlite or collector 
is given). From the description I should pate’ the plant to be either a 
oct hy orem or, with great probability, the gymnostomous form of 
W. viridula. Wf retained in Weisia Le name will need changing in view 
of R. Brown’s earlier published nam 
Trichostomum gracile R. Br. ter. antedates Weisia Weymouth R. Br. 
ter., but as no plants actually labelled "T. gracile by Brown have been seen, 
and in view of a combination Weisia gracilis Spreng. already existing, I 
have thought it, best to retain the name which can be certainly identified. 
Weisia? 4 RK. Br. ter. is a bid compact, brown, small-leaved 
form, but exhibits no structural differe 
Dicranum kowaiense R. Br. ter. is meen referable here. Brown 
remarks that it was growing with D. (Tridontiwm) tasmanicum, which it 
approaches in all characters except its size; a remark which applies very 
aptly to W. Weymouthii, which might be described as a miniature of 
T. tasmanicum, but with larger pellucid cells and more elliptic capsule. 
