TAB. LXXI-LXXII. 
Gymnopteris semipinnatifida, Fee. 
Fronde subtriangulari-ovata pinnatifida basi nunc pinnata, 
lobis pinnisve oblongis obtusis vel acuminatis superioribus 
in lobum acuminatum magnum sinuatum confluentibus 
integerrimis * v. subdentatis, fertilibus conformibus sed 
contractis, stipite (fertilis prsecipue) longissimo decidue 
paleaceo. 
Gymnopteris semipinnatifida, Fee, Acrost. p. 84. t. 44. 
ft. fronde basi vix pinnata, lobis infimis decurrentibus, tab. 
nostr. 71, 72. 
Hab. French Guiana, Leprieur . /?» Rocky rivulet in the 
Serra de Santo Gabriel, Amazon, Spruce, {n. 2121.) 
u Creeping rhizoma, much entangled among stones, so that 
it was often impossible to extract barren and fertile fronds in 
conjunction.” — The large-fronded species of Gymnopteris are 
extremely difficult to determine without the aid of good 
figures. We are consequently thankful for the figure, as 
well as its accompanying description, of G. semipinnatifida , 
that M. Fee has given us in his valuable work on Acrosticaceoe. 
That species, however, he considered remarkable ff en ce 
qu’elle offre sur un meme petiole une paire de pinnules tres- 
courtement petiolee, qui la fait pinnee, deux ou trois paires 
intermediares, soudees vers la base, qui la font pinnatifide ; et 
un sommet seulement ondule ou sinueux, qui permet de la 
regarder comme entiere.” Now in all that concerns this form, 
our plant agrees; except that the two lowest lobes are not 
separated from the rest by a wingless rachis ; and further, 
instead of any of the pinnules being shortly petiolate, 
they are decurrent upon the stipes. Our plant has a 
near approach to, but not quite, a pinnated frond at the 
base. As such I can only consider it a form of M. Fee’s G. 
semipinnatifida. 
