DICRANACEAR. 81 
Subgen. HoLopontium Mitt. 
1, Dicranum Mackayi Broth. and Dixon in Journ. Linn. Soc. (Bot.), 
xl, 437, tab. 20 (1912). 
For this species the student may be referred to the original description, 
op. cit. It is quite distinct from all the remaining species in the very short 
seta, minute oval capsule, and leaves curled when ry. It forms, in fact, 
with one or two South American species, a transition to Dicranoweisia, 
Indeed, D. antaretica is scarcely distinguishable by the leaf-structure alone - 
but the leaves in D. Mackayi are markedly faleato-secund when moist, and 
the fruit is quite different. 
ab.—Nun’s Veil Mount, Mount Cook district, 6,000 ft.; 1907. Jas. 
Murray. 
2. Dicranum pumilum Mitt. in Journ. Linn. Soc., Bot., xii, p. 64 (1869). 
Syn. Symblepharis pumila Hook. f., Handb. N.Z. FI., p. 405 (1867), 
Holomitrium pumilum Par., Ind. bryol. (1894). 
The history of the above synonymy is most obscure. Mitten in 1869 
published his Dicranum (§ Holodontium) pumilum, “ Fuegia, Hermite L., 
. D. Hooker.” I i 
trium. I am inclined to suggest that in his MS.’ notes he gave his opinion 
that the name Holomitrium should be retained instead of Symblepharis ; 
and that elsewhere he may have written H. pumilum and H. antarcticum, 
7 
intending Holodontium, not Holomitrium. Hooker, loc. cit., cites Mitten as 
saying that the New Zealand plant in question is “ allied to H. antarcticum 
C. M.” Now, Dicranoweisia antarctica (C. M.) has never been treated as a 
The locality of the latter in Mitten’s herbarium is given as “ Dry ground, 
Otago; Hector; 10; 1863.” It has not been found since. 
Subgen. Tricnopontium Dixon. 
3. Dicranum aucklandicum Dixon in Bull. Torr. Bot. Club, xlii, 94 (1915). 
Syn. Trichostomum faleatum R. Br. ter. in Trans, N.Z. Inst. 
vol, 29, p. 480 (1897). 
This quite-recently-described species was found in Mitten’s herbarium 
under the same cover with D. pumilum, no other data being given but 
“ Auckland Island, New Zealand.” It is a less densely tufted, more laxly 
foliate plant than D. pumilum, which it much resembles ; the leaves also are 
longer, more finely tapering, with more elongate upper areolation. Thesporo- 
phyte is very similar, but the peristome-teeth are almost entirely destroyed. 
