22 i 38. ASPLENIUM, ATHYRIUM. 



very narrow Dimple or forked linear pinnl. ; texture herbaceous ; racMs firm, 

 erect ; sori linear, solitary, marginal. Hk. Sp. 3. p. 213. 2nd Cent. t. 37. 



Hab. Norfolk Island. Easily recognized by its dimorphous fronds. 



173. A. (Darea) scandens, J. Sm. ; st. scattered on a stout creeping rhizome, 

 very short ; fr. 1-2 ft. 1., 6-12 in. br., with numerous horizontal pinnce on each 

 side, which are 4-6 in. 1., 1| in. br., cut down to a distinctly winged rachis into 

 numerous subdistant ovate-rhomboidal pinnl., which are cut down to the rachis 

 throughout; lower segm. again pinnatifid ; ult. divisions narrowly linear; 

 texture thinly herbaceous ; rachis firm, erect ; one vein in each division ; sori 

 solitary, marginal. #. Sp. 3. p. 216. 2nd Cent. t. 37. 



Hab. New Guinea and the Philippines ; and a similar plant, with simply pinnate 

 pinnae and a stem about 1 in. 1., from Fiji and Celebes. 



174. A. (Darea) multifidum, Brack. ; st. stout, erect, grey, naked, slightly 

 paleaceous, 12-18 in. 1. ; fr. 2-3 ft. 1., 12-18 in. br. } subdeltoid, quadripinnatifid, 

 with numerous pinnae on each side, the lowest 6-9 in. 1., 4 in. br. ; pinnl. lanceolate- 

 deltoid, truncate at the base on the lower side ; segm. -|-| in. 1., j in. br., the 

 lowest cut down nearly to the rachis below into close oblong-spathulate 

 bluntly-toothed divisions, ^ in. br. ; texture subcoriaceous ; rachis grey, firm, 

 rather scaly ; veins and sori one to each division, the latter very small, quite 

 marginal. Hk. Sp. 3. p. 212. 



Hab. Tahiti, Society Isles, and Fiji. 



175. A. (Darea) Powellii, Baker ; st. naked, greyish, firm, erect ; fr. 2-3 ft. 

 ]., 12-18 in. br., subdeltoid, 5-pinnatifid, with numerous imbricated erecto-patent 

 pinnae on each side, the lowest 9-12 in 1., 3-4 in. br. ; pinnl. deltoid, 3 in. 1., 

 1^ in. br. ; lower segm. deltoid, their lower divisions again pinnatifid ; ult. 

 divisions linear, 1^-2 lin. 1., J lin. br., all the divisions erecto-patent ; texture 

 herbaceous ; colour bright-green ; rachis firm, compressed upwards ; veins and 

 sori solitary, the latter small (under 1 lin. 1.), linear-oblong, submarginal. 



Hab. Samoa, Rev. T. Powell. This comes nearest to the preceding, but is considerably 

 more divided. 



176. A. (Darea) ferulaceum, Moore ; st. 6-12 in. 1., firm, erect, naked, greyish ; 

 fr. 1-2 ft. 1., 9-12 in. br., ovate- deltoid, with several pinnce decreasing gradually 

 upwards, the lowest horizontal or deflexed, 6-9 in. 1., 3-5 in br. ; pinnl. lan- 

 ceolate-deltoid ; segm. f-1 in. 1., their divisions again pinnatifid ; ult. lobes 

 linear, blunt, 1 lin. 1., J lin. br. ; texture thinly herbaceous ; colour bright-green ; 

 main rachis firm, naked ; veins solitary ; sori lateral, very small, Hk. Sp. 3. 

 p. 216. 2nd Cent. t. 38. 



Hab. Andes of Ecuador and New Granada. 



Athyrium, Roth. Feins free, sori more or less curved, sometimes horse- 

 shoe-shaped. Sp. 177-199. Fig. 38. e. 



* Fronds deltoid. Sp. 177-180. 



177. A. (Athyr.) crenulatum, Fries ; st. 6-12 in. 1., scattered, firm, erect, 

 naked, straw-coloured, clothed towards the base with large ovate dark-brown 

 scales ; fr. 9-15 in. each way, deltoid, tri- or quadripinnatifid, with 9-12 pinnce 

 on each side, the lowest much the largest, 6-9 in. 1., 1^-2 in. br. ; pinnl. lan- 

 ceolate, cut down to the rachis except towards the point on each side into 4-6 

 blunt oblong segm. 2 lin. 1., 1 lin. br., which are bluntly toothed ; texture 

 herbaceous ; rachis straw-coloured ; both surfaces hairy or nearly naked ; sori 



