38. ASPLENIUM; §§ EUASPLEWIOM. 203 



nalsed ; fr. 12-18 in. 1., 4-6 in. br., with 12-20 stalked horizontal pinnm on 

 each side, which are 2-3 in. 1., ^f in. br., tlie point acute, the edge slightly 

 undulato-crenate, the upper side with a distinct auricle at the base, and then 

 narrowed suddenly, the lower side obliquely truncate ; texttwe thinly Jierbaceous ; 

 colour deep-green ; rachis naked, green, compressed, flaccid ; iidns fine, distant, 

 usually once forked ; sori distant, in 2 regular rows, falling short of the edge. 

 — A. riparium, Liebm. Hk. Sp. 3. p. 119. t. 169. 



Hab. Tropical America, from Mexico and the West Indies to S. Brazil. — A. obtud- 

 foliwm, L., appears to be founded on a dwarfed form of this, with bluut and somewhat 

 laeiniated pinn^, 



^7. A^. fuUginosum, Hk. ; St. tufted, very short, densely clothed with blackish 

 fibrillose scales ; fr. 6-12 in. 1., 2-3 in. br., with 12-24 broadly-adnate horizontal 

 subfalcate pinnce on each side, which are 1-1^ in. 1., f-^ in. br., the point acute, 

 the edge slightly toothed, the base a little narrowed on both sides in the lower 

 ones, which are gradually reduced in size downwards ; texture papyraceo- 

 herbaceous ; colour nearly black when dry ; rachis densely fibrillose throughout ; 

 veins usually once forked ; sori in 2 regular rows near the point of the pinnae. 

 ■—Hk. Sp. 3. p. 120. 2nd Cent. F. t. 3. 



V Hab. Borneo ; gathered by Mr. Low. — A very well-marked plant. 



68. A. borneense, Hk. ; St. 3-4 in. 1., stout, greyish, arcuate, fibrillose ; fr. 

 3 ft. 1., 2| in. br., with very numerous sessile pinnm, the lower ones growing 

 smaller very gradually, the central ones IJ in. 1., \ in. deep, the point bluntly 

 rounded, the upper edge inciso-lobate, auricled inwards, and narrowed suddenly 

 at the base, the rest and the outer part of the lower edge, which is very 

 obliquely truncated at the base, distantly toothed ; texture herbaceous ; rachis 

 firm, nearly naked ; veins subflabellate in the outer half of the pinnae ; sori 

 few, almost in parallel rows. — HJc. Sp. 3. p. 135. t. 186. 



Hab. Borneo, H. Low, Jr. — This comes near A. cidtrifolivm, bat is a stronger plant, 

 with blunter and more unequal-sided plnnse dwindling downwards very gradually. 



69. A. abscissum, Willd. ; st. tufted, 4-B in. 1., erect, greyish, naked ; fr. 6-12 

 in. 1., 3-4 in. br., sometimes proliferoiis at the apex, with 12-20 sessile horizontal 

 pinnce on each side, which are 1^-2 in. 1., ^-f in. br., the point bluntish, the edge 

 inciso-crenate, the upper one narrowed suddenly at the base, the lower one 

 obliquely truncate ; texture herbaceous ; rachis firm, naked, slightly winged ; 

 veins distant, once forked ; sori short, in 2 regular rows, falling short of both 

 midrib and edge. — A. firmum, Kunze. Hk. Sp. 3. p. 134. t. 174. 



Hab. Tropical A'merioa, from Cuba and Guatemala to Peru and S. Brazil. — ^Very 

 doubtfully distinct from A. cultrifolium, from which it differs mainly by its shorter and 

 blunter pinnae. 



70. A. cuWrifoliwm, Linn. ; st. 4-6 in. 1., naked, greyish, firm ; fr. 6-12 in. 1., 

 4-6 in. br., deltoid-ovate, with a lobed terminal point and 6-10 pinnos on each 

 side, which are 3-4 in. 1., ^-j in. br., the point acute, the edge broadly toothed, 

 sometimes lobed below nearly or quite to the rachis, the base nearly at a right 

 angle on. the upper, but obliquely truncate on the lower side ; texture herba- 

 ceous ; veins fine, distant, usually once forked ; sori falling short both of the 

 edge and midrib. — Hk. Sp. 3. p. 110. Diplaziura, Kunze. 



Hab. West Indies and Guatemala southward to Guyaquil. — The diplazioid character 

 of the sori is sometimes clearly marked. 



71. A. auri wli Ui m , Swartz ; st. tufted, 4-8 in. 1., firm, erect, nearly naked ; 

 fr. 12-*9'te"l'," 4-6 in, br., lanceolate-oblong, with 10-20 stalked horizontal 

 pinnae on each side, which are 2-4 in. 1., |1 in. br., lanceolate, often subfal- 



