Menziesiane. N. O. Filices, 
DCCCCLXIV. 
HYMENOPHYLLUM UNDULATUM, Sw. 
Humile pendens, frondibus oblongis ovatisve tri-quadripinna- 
tifidis inferne nunc pinnatis, lobis primariis patentibus, 
ultimis brevibus subpatentibus oblongis integerrimis obtusis 
vel emarginatis omnibus undulato-crispatis, rachibus alatis 
undulatis valde crispatis, involucris raris in lobos breves 
terminalibus liberis orbiculari-ovatis usque ad basin bival- 
vibus, valvis convexis integerrimis, stipitibus gracilibus 
nudis. 
Hymenophyllum undulatum, Sw. Fl. Ind. Occ. p. 1751. Sym 
Fil. p. 148. Willd. Sp. Pl. 5. p. 533. Hedw. Fil. cum Ie. 
Hook. Gen. et Sp. Fil. 1. p. 105. 
Has. Jamaica, Swartz, Menzies. Mountains of Andinarca, 
Peru, Mathews. 
A very distinct species. The stipes varies from one to 
three inches long. Fronds three four or five inches long, in 
every part beautifully and regularly undulato-crispate. 
Fig. 1. Portion of a fertile frond :—magnified. f. 2. In- 
volucre, from which one valve is removed : —magnified. 
