OF THE ABOR EXPEDITION , 1911-1912. 
59 
other way than as the centre of dispersal of this genus, and without 
attempting to base any generalizations upon a single c&se, 1 suggest 
that it may be worth investigation how far it is supported by 
further evidence from this and other groups of plants. 
I desire to express my obligation to'M. Cardot for assistance in the 
preparation of both this and the following report. 
I may also mention that the types of the new species here described 
are in my herbarium, which I hope will ultimately iind a home in the 
British Museum collection ; co-type specimens of each, moreover, are in the 
Herbarium of the Koval Botanic Garden, Calcutta. 
1. Trematodon Rich. 
1. Trcmatodou couformis Mitt. Muse. Ind. or. p. 12. 
On a stone, Pasighat (n. 36587). Kobo, February, 1912 (n. 38107), 
Mr. Burkill remarks on this that “ it was verv common about the 
•/ 
clearing of the camp, growing on the bare earth, it was not present in 
December, or at least not noticed.” As the capsules are in many cases 
ripe and deoperculate, it is scarcely possible that the entire develop- 
ment could have taken place, from the spore, between the two visits. 
It is probable that the gametophyte was present, but being small would 
be inconspicuous, or indeed partly hidden ; the clearing would give an 
opportunity for the better development of the plants, no doubt, thau 
would normally be the case. Both specimens were in good fruit, the 
capsules exhibiting, as is usual in this genus, a great diversity of 
maturity in the same gathering. 
2 , Dicrauoloma lien. 
2 , Dicranoloma subrcllcxifoliuw Par. 
Syn. Dicranum rejlexifolinm Mitt. Muse. Ind. or. p. 15 (baud C. 
Mull.) 
Dicranum subrcilcxi/otiuni C. M. in Bot. Zeit., 1864, p. 349. 
Summit between Serpo and Lalik, ait. 5, LUO ft., xerophytie moss from 
rocks (n. 36344) c. £r. 
I have compared this with the Khasian specimens in Hooker's her- 
barium, referred (erroneously) by Mitten to the Malaysian D. rcjlexifob 
ium C. M,, but distinguished by C, Muller and forming the type of his 
D . subreflexifoliitm. It agrees in nearly every detail, the toothing of 
the leaves varies in Hooker and Thomson's plant, being often weaker 
b 2 
