DICRANACEAE. 47 
cermuous capsule, and short peristome teeth ; he describes _ leaves of L. 
affine as “ obtusiuscula,” a description with whic few, I t , will agree. 
I have measured setae in a plant of Gueinzius’ (probably the idekina) gather- 
we described by C. Miller. hone in this case the sey is slinply described 
“Cap ”’) varymg from 5 mm. to 13 mm. on the same tuft, while in other 
ates they show all the range of the Mosaaleiien.; plant; the capsules 
are absolutely identical in form, and the peristome, if possibly a little shorter 
n general is not constantly so, and may be actually identical. Gueinzius’ 
Port Natal plant in herb. Schimp. is quite identical with Hooker’s D. flexi- 
folium, and, so far as can be examined, with the Australasian plant, but 
the capsules are too young to show peristome 
have examined numerous specimens of the South Indian Ditrichum 
plicatum (Mont.) Ham ae including Montagne’s plant from the Shee eis 
and find them identical with the Cape D. flexifolium, and showing the 
range of variation. I have not se able to ies the actual sce of f the 
Javan plant—D. difficile (Duby) Fleisch—nor of the Bourbon—D. Bory- 
anum (C. M.) Hampe—but I do not feel the least aout that they are both 
referable to the same very widespread type.* D. amoenum Thw. & Mitt., 
from Ceylon, has a very imperfect almost se iaomped peristome, and may 
perhaps at least provisionally be kept separate 
5. Ditrichum calcareum (R. Br. ter.) Broth. in thes and Prantl, 
Pflanzenfamil., Musci, 1, 300 (1901). aiglag V, fig. 7.] 
Syn. Trichostomum calcareum R. Br. ter. in Trans. N.Z. Inst., vol. 29, 
. 480, t. xxxix. Leptotrichum dive arpum ©. M. in Hedw..,. 
1898, p. 111. Ditrichum subbrachycarpum Par., Suppl. iad , p. 132. 
D. calcareum is a plant of markedly dense habit, with short leaves little 
altered when dry and closely imbricated, scarcely secund ; rather abruptly 
narrowed from the base to the subula. The nerve is very broad and thick, 
as much as 100 » or 120 » wide at the base, sometimes ill defined at the sides, 
of a deep orange-red, giving with the bright yellow of the basal so a very 
striking coloration to the leaves; the basal areolation is very narrow linear. 
In evirostrum the leaves are smaller, more gradually caneted to the 
subula, with narrower, thinner, less highly coloured nerve, and somewhat 
wider basal areolation. 
have examined the type of Leptotrichum subbrachycarpum C. M., from 
e Gra ramplans, Victoria, leg. Sullivan, in herb. C. Miiller, and find it quite 
jacertént with R. Brown’s plant, so far as the vegetative characters go. 
have not seen the fruit of C. Miiller’s — but the description agrees 
exactly with the description and figure of R. Brown’s plant, except that 
C. Miiller describes the theca as erect, hile D. calcareum is described and 
red as inclined. The exact similarity of the other characters, and 
especially of the marked vegetative features, leave no doubt, however, of the 
identity of the two. The small tuft in rown’s herbarium possesses a 
single seta, but no capsule. The author describes and figures the peristome 
as considerably longer than in D. brevirostrum. The lid is equally short. 
e inflorescence is autoicous, with several gemmiform ¢ flowers below the 
perichaetium 
The locality given by R. Brown, “ Castle Hill, West Coast fear is, So 
far as I have any information, the only known New Zealand habita 
I have dealt with the Indian plants more fully elsewhere: cf. Journ. Bot., vol. 50 
ast, p. 145. 
