326 On the Discovery of two species of Trichomanes. 
indebted to Mr. Beaumont for live roots of the plant, os 
though carefully itis in a Ward c case, I have not yet s 
ceeded in causing to vegetat 
On the 8th inst. dary 1853), Mr. Peters was so fortunate 
as to detect, in the same region, a second species of Trichomanes, 
of a small size, with undivided fronds, growing in animals tufts, 
‘The specimens, which I have just received from the discoverer 
in a letter, have very little fruit, enough however to ascertain the 
genus, and to show that they belong to a new species, of Hooker's 
first section of true Trichomanes, and of his second subdivision, 
which contains T. muscoides, T. erosum, T. pusillum, and T. 
apodum. Our new Fern is more nearly related to the first of 
these (chiefly a West Indian species), having the involucre 
equally immersed in the body of the frond (which is not the 
ease with the other species), and the receptacle very short. But 
the shape of the fronds, their slender stipes, and the total absence 
of an intramarginal vein are abundantly distinctive characters. 
In the shape of the broader fronds, and in the stellate hairs 
which sparsely beset their margins, our plant may - likened to 
T. reptans; but that species has a close and flabellate venation, 
and a cylindrical, exserted involucre, with a deeply two-li 
orifice. 
I add the characters of the species, which may appropriately 
bear the name of its discoverer. 
Tricnomanrs Perersm (sp. nov.): pusillum ; caudicibus fili- 
formibus tomentosis intricato-ceespitosis ; frondibus (3-6 lineas 
longis) oblongo-lanceolatis ovato-oblongis vel minoribus late obo- 
vatis cuneatisve undulatis majoribus subpinnatifido-sinuatis obtu- 
sis glabberrimis (junioribus margine hine inde pilis nigris 2-3- fur- 
cats ciliatis) penninerviis in stipitem gracilem attenuatis; venis 
reatis vel pinnato-ramosis liberis (intramarginali nallo) ; sore 
solivario terminali ; indus sio immerso © tabalos-infundbulnns 
oe fronds, as in T. Betis are very diverse in shape. 
The dilated-cuneate ones might be taken for the sterile form; 
e that, more frequently than the na rrower fi aad 
year a terminal indusium, which, however, is sterile 
empty. There is a peculiarity about the venation; some af 
branches of the primary veins being evanescent to owards. the 
» SO as apparently to lie free and independent in the fi 
The slender stipe i is as long as the frond itself. 
