122 ASPLEXIUM, § EUASPLENIUM. 



unequally and shortly cuneated base oblong obtuse duplicato- 

 serrated superior base auriculate, veins once or twice forked, 

 sori linear oblique nearer the costa tlian the margin, involucre 

 narrow-linear membranaceous. — H.B.K. Nov. Gen. Am. i. 

 p. 14. mild. Sp. PI. V. p. 319. Hoolc. et Grev. Ic. FiL t. 

 1.37- Mctten. Fil. Hort. Lips. p. 72. A. pterophorum, Pr. 

 Tent. Ptcrid. p. 107- 



Ilal). Tropical America, N. Granada, H.B.K., Moritz, n. 175. Venezuela, 

 Fendler, n. lib. Vcrw, Pwppir/. Forest of Archidona, Ecuador, /aweson. Brazil, 

 Organ ^Mountain, Gardner, n. 670, and n. 5940. Tarapota, Eastern Peru, Spruce, 

 n. 4154, and n. 4G75. St. Vincent, C. S. Parker. Jamaica, Dr. Bancroft, Purdie, 

 MFadyen. Sugar-loaf Mountain, Sierra Leone, Barter. — A very peculiar species, 

 having in general singularly broad, herbaceous wings on each side the stipes and 

 between the pinnae on the rachis, with a break or notcji where the pinna is at- 

 tached. These wings are, however, variable in breadth, often obsolete in the 

 stipes, and occasionally nearly so on the rachis. The apex is so frequently pro- 

 liferous that it is rare to find perfect terminal pinnae, generally a prolonged rachis 

 broken off at the apex. Our Sierra Leone plant is unquestionably the true 

 A. alatum, but almost passing into our A. erect um, var. proliferum, of the 

 Resectum-group. 



80. A. (Euasplenium) pterojms, Klfs. ; caudex small stout 

 declined squamose, stipites 3-4 or 6 inches long tufted 

 greenish-brown winged above, as is the entire rachis, fronds 

 1-1 4 foot high elongato-lanceolate caudato-acuminate taper- 

 ing at the base pinnated membranaceous, pinnse numerous 

 approximate horizontal short-petioled (uppermost ones mi- 

 nute and confluent) 1-1^ inch long from a broad unequally 

 cuncate base lanceolate shortly acuminate coarsely and un- 

 equally serrated, superior base truncate auricled, inferior 

 base excised, lowest pinnaj abbreviated, veins very distant 

 simple (except at the superior base) terminating within the 

 margin, sori oblong-linear, involucre very pale nearer the 

 costa than the margin oblique. (Tab. CLXXVII.) — Kaulfs. 

 En. Fil. p. 170. Met ten. Asplen. p. 119. 



Hab. S. America. Brazil, Kaulfnss. Portorico, Schwaiiccke. Guadeloupe, 

 Ullerminier. St. Vincent, L. Guilding. — This will rank next to A. alatum, 

 chiefly differing in the narrower wings to the stipes and rachis, and in the closer 

 placed pinnae, which have more acuminated apices, and its place may be between 

 that and our A. erectum as an intermediate species, if really deserving to consti- 

 tute a bond fide species in a group so sportive as are it and its allies. Indeed, 

 the present, as well as the preceding and following, have nearly as strong a claim 

 to be arranged in the Resectum-gronp as here. 



81. A. (Euasplenium) rhizophorum, L.; (normal form) 

 caudex suberect stout subterraneous imbricato- paleaceous at 

 the summit, stipites ciespitose a span and more long casta- 



