198 38. ASPLEN1UM, EUASPLENIUM. 



in. 1., 1^ in. br., with very numerous close-placed pinnse, the lower ones, which 

 are f in. 1., % in. br., deflexed, the point obtuse, the edge inciso-crenate, the 

 upper side auricled and narrowed suddenly at the base, the lower truncate in a 

 straight line ; texture subcoriaceous ; rachis glossy, nearly black ; veins mostly 

 once forked ; sori in 2 unequal parallel rows. A. multijugum, Wall. Hk. Sp. 

 3. p. 139. t. 188. 



Hab. Himalayas to Ceylon. A. opacum, Kunze, is a large form, with herbaceous pinnae 

 1 in. 1. Very doubtfully distinct from A. monanthemum, but constantly plurisorous. 



43. A. subavenium, Hk. ; st. tufted, 2-3 in. L, wiry, blackish, densely fibrillose ; 

 fr. 9-12 in. 1., 1^ in. br., with very numerous close-placed horizontal pinnae on 

 each side, which are f-1 in. 1., J-| in. br., Jblunt at the point, the edge slightly 

 inciso-crenate, the upper side distinctly auricled, and narrowed suddenly at the 

 base, the lower narrower below, but nearly equal upwards ; texture coriaceous ; 

 veins faint, and a distinct midrib only in the lower part of the pinnse ; rachis 

 densely fibrillose, especially below ; sori 2-4 on each side, oblique. Hk. Sp. 3. 

 p. 143. t. 181. B. 



Hab. Penang, Mactier. Bojer's Madagascar specimen, figured in "Species Filicum," 

 seems to be an example of this, which differs from the rest of the group by its densely 

 fibrillose rachis, and is not unlikely A. setosum, Desv. 



44. A. ebeneum, Ait. ; st. tufted, 3-6 in. L, chesnut-brown, polished, nearly 

 naked ; fr. 12-18 in. 1., 2-3 in. br., linear-lanceolate, with 20-40 sessile horizontal 

 or subfalcate/Vm<#on each side, which are 1 in. or more L, ^ in. or rather more 

 br., the point acute or bluntish, the edge inciso-serrate, but sometimes very 

 faintly so, the base hastately auricled on one or both sides, often cordate ; texture 

 herbaceous ; veins fine and close, once or twice forked ; rachis chesnut-brown 

 and bright polished ; sori often 10-12 on each side, oblong, short. Hk. Sp. 3. 

 p. 138. 



Hab. Canada to the West Indies, and Ecuador ; Cape Colony. A. ebenoides, Scott, of 

 which a single root was found on the banks of the Schuykill above Philadelphia, looks 

 most like this ; but the pinnse are not cut down to the rachis, and the frond has an 

 elongated point which is only sinuated with a single row of sori on each side. Probably, 

 as suggested by Professor Eaton, this is A. Hendersoni of Houlston, figured by Lowe, 

 vol. 5, t. 12. This species recedes from the Trichomanes group towards A. formosum. 



ft Pinnae 1 or 2, linear -cuneate. Sp. 45-46. Acropteris, Link. 



45. A. septentrionale, Hoffm. ; st. densely tufted, 3-4 in. 1., slender, erect, 

 naked, ebeneous towards the base ; fr. simple or cleft from the apex into two 

 or three cuneate divisions, 1-1^ in. 1., 1 lin. br., with a few sharp lateral and 

 terminal teeth ; texture coriaceous ; veins forked, subparallel ; sori elongated, 

 copious, often at last hiding the whole under surface. Hk. Sp. 3. p. 174. Brit. 

 F. t. 26. 



Hab. Norway and Britain, to Spain, Italy, Siberia, and the Himalayas, Eocky Moun- 

 tains and New Mexico. This and the following connect Asplenium with Actiniopteris. 



46. A. Seelosii, Siebold ; st. densely tufted, 1-2 in. 1., slender, wiry, green, ebe- 

 neous below ; fr. ^-f in. L, palmately cleft, usually into 3 nearly equal forks, 

 which are about 1 iin. br., the edge slightly inciso-serrate ; texture coriaceous ; 

 upper surface pale-green, hairy ; veins obscure ; sori copious, when mature occu- 

 pying the whole surface. Hk. Sp. 3. p. 175. 2nd Cent. t. 82. 



Hab. Tyrol and Carinthia. 



