38. ASPLENIUM, §§ EUASPLETTIUM. 203 



naked ; fr. 12-18 in. 1., 4-6 in. br., with 12-20 stalked horizontal pinna: on 

 eacli side, which are 2-3 in. 1., |-| in. br., the point acute, the edge sliglitly 

 unduhito-crenate, the upper side with a distinct auricle at the base, and tlien 

 narrowed suddenly, the lower side obliquely truncate ; texture thinly herbaceous ; 

 colour dec[)-green ; rachis naked, green, compx'essed, flaccid ; veins fine, distant, 

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

 — A. riparium, Lichm. Uk. Sp. is. p. 119. t. 1G9. 



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

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

 laciniated pinnss. 



67. A. ftiliginosum, Hk. ; st. tufted, very short, densely clothed with blackish 

 fibrillose scales ; //•. 6-12 in. 1., 2-8 in. br., with 12-24 broad ly-adnate horizontal 

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

 the edge sliglitly toothed, the base a little narrowed on both sides i\\ the lower 

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

 Jierbaceous ; 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. 3l 



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



68.' A. borneense, Hk. ; st. 3-4 in. 1., stout, greyish, arcuate, fibrillose ; //•. 

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

 smaller very gradually, the central ones Ij in. 1., j 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 

 ol)liquely 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. — Hk. Sp. 3. p. 135. t. 186. 



Hab. Borneo, II. Lcnv, Jr. — This comes near A. caJtrlfolium, but is a stronger plant, 

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



69. A. ahscissum, Willd. ; st. tufted, 4-8 in. 1., erect, greyish, naked ;/r. 6-12 

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

 pi7ma3 on each side, which are \\-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 

 midhb and edge. — A. firmum, Kunse. Hk. Sp. 3. p. 134. t. 17-i. 



Hab. Tropical America, from Cuba and Guatemala to Peru and S. Brazil. — Very 

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

 blunter pinnae. 



70. A. cultrifolimn, 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 pinnce on each 

 side, which are 3-4 in. 1., \-\ 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. Diplazium, Kunze. 



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

 of the sori is sometimes clearly marked. 



71. A. miriculaftim, Swartz ; st. tufted, 4-8 in. 1., firm, erect, nearly naked ; 

 fr. 12-18 in. 1., 4-6 in. br., lanceolate-oblong, with 10-20 stalked horizontal 

 pinnce on each side, which are 2-4 in. 1., | 1 in. br., lanceolate, often sub.*"al- 



