TrachyphyUum] mosses (Gepp). 299 
when wet, cordate-ovate acuminate, rather concave, shortly bi- 
costate; margins erect : back papillate; alar cells multi-seriate, 
small, quadrate to rhomboid-oblate, reaching to the base of the 
nerves and to or beyond the middle of the margin, o 
by the contracted, chlorophyllose, primordial utricle; upper cell 
linear-elliptic with apices projecting From the back of the leaf. 
Perichsetium longly exserted; seta elongate; theca inclined, 
unequal; operculum brevirostrate. Peristome (in T. gastrodes) 
teeth with a median furrow outside, and with lamellate trabecular 
inside; processes plicate and cilia solitary, ubequal bo them 
(Duby). Calyptra unknown. 
1. T. gastrodes Gepp. 
Hypnwm (Heierocladium) gastrodes Welw. el Duby in I 
Mem. Soc. Phys. XXI. ii. p. 439. t. v. fig. 1 (1872). Ueterocladium 
gastrodes Jaeg. et Sauerb. Gen. el Spec. Muse ii. p. 31 I (1 
Hi ii. i. a. On rocks and old tree-trunks in the elevated rocky parts 
of Serra da Kella, where the TarchonantJius woods begin, bearing vi ry 
scanty fruit, most of the thecas baring already fallen off; b< 
specimens with a few entire capsules were found June I860. Xu. 22 
Mixed with No. 32 ( Braunia arbuscula) but apparently of rather ran 
occurrence ; on Tarcho/tanthus in rocky woods at the summit of >< rra 
da Sella ; without Er. June I860. No. 189. 
This genus is designed for the reception of a few vagrant species 
which, though mostly unknown in the fruiting Btate, have in common 
a well-marked vegetative habit in the expansive movement of the 
leaves upon the application of water, and in the areolation of the 
leaves and their papillate dorsal surface. In the leaf-structure an 
approach to Erytfirodontium is indicated, but the iuclined. campto 
carpous fruit is not found in that genus. 
The other species refered to the genus are: — 
2. T. INFLEXUM, from Nepal < Wallich). 
Hypnwm inflexum Harv. in Hook. Icon. PI. Rar. I. t. xxiv. 
fig. 6 (1836); and in Book. Journ. of Botany ii. p. 20(1840). 
Stereodon inflexus Mitt, in Journ. Linn. So,-. Suppl. i. p. 92 (1859). 
Pterigymmdrum inflexum C. Muell. in Linnsea xxxix. p. I"»:> 
| 1875). Entodon inflexua < '. Muell. in op. cit., xlii. p. 135 | I 
Platygyrium inflexum Jaeg. el Sauerb. Gen. el Spec. Muse. ii. 
p. 342(1878). " 
The fruit of i bis species appears to be Sten odontaceous like that 
of the foregoing species. 
3. T. ferbicoli m. from Central Africa (Schweinfurth). 
Pterigynandrum ferricolum C. Muell. in Linnsea xxxix. p. 154 
(1875). Platygyrium brevicollum Jaeg. el Sauerb. Gen. el Spec. 
Muse. ii. p. 343 (1878). Platygyrium ferricohum eorund., of cit. 
p. 742 (1879). 
■1. T. fabronioid] -. from Mauritius (De Robillard). 
Pterigynandrum fabronioidea C. Muell. ex Besch. in A 
Nat. ser. ii. \. p. 292 I 1880). Leptohymeniumfabron • B< cl 
in he. cit. 
