Musci Exorici.—Wallichiani. 
TORTULA INDICA. 
Tortula caule breviusculo subramoso, foliis lineari-ob- 
longis erectis subapiculatis siccitate crispatis, capsula 
oblonga, operculo acuminato. (Tas. CXXXV.) 
Trichostomum indicum. Willd. in Bot. Mag. v. 4. 
Bs. tids (fee Schwaegr.) Schwaegr. Suppl. v. 1. 
p. 242. t. 
Has. In India orientali. Rottler. ing muris Horti Botanici Cal- 
cutte, Indie orientalis. Gul. Wallich, M. D. 
Caules in cespitibus latis, semiunciales, erecti, innovationibus 
precipue ramosi, superne plerumque incrassati. Folia dense 
imbricata, atro-viridia, erecta, mollia, lineari-oblonga, obtusa, 
margine subrecurvo, nervo satis crasso concolore ultra apicem 
in apiculum perbrevem desinente percursa, siccitate tortilia. 
Perichetialia Saline similia, sed longiora. Seta bi-trili- 
nearis flava. a oblonga flavo-fusca, ore rufo. Oper- 
culum ecapsula bre sli flavescens, acuminatum. Calypira 
allide fusca, lateraliter fissa. Peristomium breviusculum, e 
ciliis longis filiformibus spiraliter tortis, intense rubris, inarti- 
culatis, basi per paria conjunctis. 
Patches of this plant, eight or ten inches in diameter, were 
gathered on brick walls surrounding the Botanic garden of Cal- 
cutta by my kind friend Dr. Wallich, who has the direction of 
that establishment, and who has not only exerted himself to col- 
lect cryptogamic plants for me, but has induced the Honourable 
Edward Gardner to do the same in the rich and distant province 
of Nepaul, where he is resident at Lig oe of the Rajah of vet 
mondu ; so that through his means I am in possession of so 
very curicus mosses from these sitaities gee 1 shall besinen ¢ <8 
lay before the public. 
On taking off the operculum of the species now under consi- 
deration, I find the upper part of the peristome mostly removed 
with it, when the remains will naturally give the idea of a Didy- 
modon, or according to the Hedwigian system a Trichostomum ; 
and it is this circumstance which has probably deceived Schwae- 
gues and induced him to figure the peristome incorrectly. 
The erect and eg 0 leaves distinguish this at once from 
all the ea species of 
Fig. 1, tufts of plants, mat. size. Fig. 2, single plant. Fig. 3, 
leaf, Fig. 4, capsule and peristome. Fig. 5, calyptra. Fig. 6, 
operculum. Fig. 7, teeth of the peristomes—magn. 
