224 _ 38. ASPLENIUM, §§§§ ATHTKIUM. 



very narrow simple or forked linear pinnl. ; texture herbaceons ; rachis firm, 

 erect ; sori linear, solitar}', 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-rhoraboidal 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. — Hk. Sp. 8. p. 216. 2?id 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) midtifidum. Brack. ; st. stout, erect, grey, naked, slightly 

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

 with nunierous/)?w««? on each side, the lowest 6-9 in. 1., 4 in. br. ; pnnnl. lanceolate- 

 deltoid, truncate at the base on the lower side ; segm. h-^ in. 1., 5 in. br., the 

 lowest cut down nearly to the rachis below into close oljlong-spatliulate 

 bluntl3'-toothed divisions, \ in. br. ; texture subcoriaceous ; rachis grey, firm, 

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

 marginal.— ii?I-. 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. 1h'., subdeltoid, 5-pinnatifid, with numerous imbricated erecto-patent 

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

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

 divisions linear, 1^-2 lin. 1., \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, Bev. T. Powell. — This comes nearest to the preceding, but is considerably 

 more divided. Luerssen unites them both with bulbifcrum. 



176. A. (Da,Yea,) fertdaceum, Moore ; st. 6-12 in. 1., firm, erect, naked, greyish ; 

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

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

 ceolate-deltoid ; segm. |-1 in. 1., their divisions again pinnatifid ; ^llt. 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. Veins free, sori more or less curved, sometimes horse- 

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



* Fronds deltoid. Sp. 177-180. 



177. A. {Pi.i\\yr.) crenatum, Rupreoht ; st. 6-12 in. 1., scaitered, firm, erect, 

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

 scales ; fr. 9-1.5 in. each way, deltoid, tri- or quadripinnatifid, with 9-12 pinnm 

 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 ; loth surfaces hairy or nearly naked ; sori 



