64 BRYOLOGY OF NEW ZEALAND. 
able to clear up the uncertainty in all cases, but I believe that some at least 
of the difficulties will be found solved in the following treatment. 
Unfortunately, none of R. Brown’s species of Dicranella (described in 
Trans. N.Z. Inst., vol. 29, p. 451, as Dicranum) are to be found in his 
herbarium. I have, therefore, only been able to make suggestions as to 
their identity. The fact that no other species of Dieranella are — ed 
in the collection increases the probability that some or all o species 
are identical with species already described, with which there is gens 
that he was unacquainted. 
Key TO THE SPECIES. 
ian ae bee nieces a Senate Ecaretareny seh abruptly narrowed to a a 
1. n; upper cells papill 2 
Leaves, . east net the om “ie a, or areas sheathing, more gradually tapering : 
3 
clathrata. 
Stems seater, ane es ‘closely set as “es D. Schreberi), peristome ‘wok 
broad, striolate above or lowly papillos 2. wairarapensis. 
Capsule very minute, less than 1 mm. es aa lid, sek and pymsnaptic al 
3. acillima. 
4 
| 
aac ot eas i distant, seakorsh teeth filiform shows: highly nia densely 
ee larger, | mm. or more long, inclined and curved . 
Leaves small, about 2 mm. pi ee tapering to pore the tae Be 
ee cluding t the e perich. bracts) subequal, and similar. Seta 5 5. cyrlodonta, 
‘| ves ~ aio i igs the —_ at rain from a wide sh nating “has ; th a 
6-20 mm. lon. : . Jamesonit. 
1. Dicranella clathrata H. f. & W., Fl. N.Z., 2, 65. 
Syn. Dicranum clathratum H. f. & W.in Lond. Journ. of Bot., 1844, 
p. 542; Handb. N.Z. FL, p. 411. D. vaginatum var. clathratum 
Bot. feoW a Bly Nise 2, 65. Aongstroemia clathrata C. M., 
Syn., 2, 608. Dichodontium clathratum Jaeg., Adumbr. 3 by Oh 
Dicranum campylophyllum H. t. & W., Fl. N.Z., loc. eit. - Hand- 
book, loc. cit., p.p. (nec Tayl.). Aongstroem oemia loncho rrhyncha 
C. M. in Hedw., 1898, 114. Dieranella lonchorrhyncha nk 2 
Ind., p. 331. ? Dicranum Cardoti R. Br. ter. in Trans. N.Z. 
vol. 35, p. 329, t. xxxvi. ? D. papillosum R. Br. ter., op. tt 
vol. 29, P. 456, t. xxix. ? D. eo ea R. Br. ter., op. cit., 
p. 457, t. xxx. Dicranum variabile R. Br. ter., = cit., p. 455, 
t. xxix. “Detendlin variabilis Par., Suppl. Ind., 19 
A tall species, 1-2in. high, or under abnormal Stine the sterile 
plant may be much taller. An inhabitant of wet places. Distinct in the 
distant leaves, with long, pale, sheathing bases, by which the foie is com- 
pletely hidden, the upper = of the sheath of one leaf enclosing the lower 
part of the succeeding on 
e statement in the Hind bank that the leaf subula is “ wholly occupied 
by the stout nerve ”’ is not quite correct. The lamina is, leve, con- 
stantly, or nearly so, distinct to apex, but the cells are papillose and 
obscure, and it is very difficult or impossible to observe the ditimitatio’ of 
the nerve without sectioning. 
leaves are dull lurid green a squarrose when moist, but 
crisped when The points are watiablé either Le at apex and 
coarsely denticulate, or narrowly tapering and entire. seta varies in 
Be i The capsule is sometimes erect and symmetrical, but often inclined 
d asymmetrical, ic-ovate or shortly ovate, when deoperculate rather 
