250 



F I L I C E S. 



3. Trichomanes parvulum, Fbir. 



Trichomanes parvulum, Poir. ex Kaulf. Enum. Fil. p. 260; Blume, Enum. PL Jav. 

 2, p. 223; Hook. Spec. Fil. 1, p. 118, t. 39, A (opt.). 



Hab. Vicinity of Hilo, Sandwich Islands : on moist rocks. 



A very pretty little species, whose fronds, with the stipe, not 

 exceeding half an inch in height, are very likely to be overlooked by 

 collectors, from their growing among and almost entirely concealed 

 by various kinds of mosses, many of them larger than itself. 



4. Trichomanes erectum, Sp. Nov. (Tab. 36.) 



T. rhizomate filiformi repente parce rufo-tomentoso ; stipite brevi alato ; 

 frondibus erectis ovato-oblongis bipinnatifidis ; pinnis remotis alternis 

 erecto-patentibus ; laciniis angusto-linearibus emarginatis vel obtusis; 

 indusio supra-axillari cylindrico prorsus immerso basi attenuato, ore 

 integerrimo subpatente; receptaculo ad medium usque exserto. 



Hab. Feejee Islands : on Bread-fruit trees ; rare. 



This is a very slender species, with a delicate, filiform, creeping, 

 rufous-tomentose rootstoch, and erect, ovate-oblong fronds, from one to 2 

 inches in height, deeply bipinnatifid, and raised on a short winged 

 stipe: primary divisions distant, alternate, ascending, and unequal in 

 length, the inferior ones decurrent. Lacin'we, narrow-linear, either 

 emarginate or obtuse. Indusium immersed its wliole length in a short 

 and nearly axillary lacinia, arising from the inner edge of the pinna, 

 cylindrical, with an attenuated base and a somewhat spreading, entire 

 mouth; the receptacle exserted for nearly half its length. 



Related to the T. intramarginale of Hooker and Greviile; which, 

 however, bears the sori on the apices of the laciniae, and has also a 

 very evident intramarginal nerve, which does not exist in our plant. 



Plate 36. — Fig. 1. Plant, of the natural size. 1 a. View of a 

 portion of the frond, from beneath, slightly magnified. 



