DICRANACEABR. 65 
wide-mouthed, so that the capsule is turbinate; the lid rostrate with a 
straight or curved beak. 
The peristome is large, the teeth broad aud united at base, above divided 
each into 2-3 crreguiar brauches, which are long, filtfurm, and very variously 
connected together, sometimes being almost free throughout their length 
the typical ee structure), much more frequently united at frequent 
intervals by transverse bars, which sometimes leave such small spaces 
oa hong them as i“ be m more of the nature of perforations in a solid structure, 
whence the name “‘clathrata.”. The basal membrane is closely barred, 
‘ehile- tlie filiform branches are densely and very highly cristate with close 
papillae, so that their internal structure is entirely hidden. This structure 
of the peristome is eee Sd different from that prevailing in any of the 
other New Zealand spec 
D. clathrata was at first described as var. procter of D. vaginat 
Hook. (Dieranella vaginata Card.) of South Am e two he" rors are 
apparently identical in eae acess but the peietaient which, while of the 
same minute structure in inata, has each tooth regularly divided into 
two long espe branches, neki are free, or nearly so, for the whole of 
their len 
This Genel occurs in both North and South Islands ; I have an elongate, 
sterile form, 5 in. long, collected near Lake Wakatipu by J. Meiklejohn in 
1906. It appears to be found principally in wet places near waterfalls, and 
seems to be endemic to New Zealan 
Dicranum campylophyllum Tay. ? (Fl. N.Z., 2, 65; Handb., p. 411) 
is, so far as aor s plant is concerned, only D. clathrata (e spec. auctoris 
orig. in Herb. Hooker.). Hampe’s plant under this name is no doubt, as 
C. Miiller states + (Gen Muse. Fr., p. 321), identical with his Aongstroemia 
redunca—t.e., D. vesonit below 
No specimen of rosa variable exists in R. Brown’s herbarium, but 
from the description and figures I do not think there can be the least doubt 
that it is D. clathrata—a plant evidently not known to Brown, who does 
not mention it among the New Zealand species of Dicranum. The other 
reductions I have suggested o wn’s species in the x are more 
tentative, but I think there a <— little doubt of their correctnes 
Aongstroemia lonchorrhyncha C. M. (type in C, Miiller’s herb., Aiekend, 
leg. Cheeseman) shows no differences from D. clathrata. There is nothing 
. vaginata, 
Wilson’s sketches of the type of Dicranum clathratum Hof: & Ww. at the 
British Museum, show capsules both erect and oblique, and varying in out- 
line, ne the specimens themselves show the variation in form still more 
This cae is still more pronounced in the closely allied 
South Later D.v 
2. Dicranella wairarapensis sp. nov. [Plate VI, fig. 15.] 
Dioica. Caespites densi, pollicares, superne pallide virides, inferne 
rruginei, habitu D. Schreberi Hedw. Caulis edits vel parce divisus, 
sitar ee : folia parva, infra laxiuseula, supra sat conferta, e basi 
brevi vaginante, subamplexicauli, —— raptim im sisteslsths brectiubiiian 
latam, valde squa 
patam, angustata; 1-15 mm. a: Costa debilis, imferne latiuscula, 
