38. ASPLEXIUM, ATHYRIUM. 225 



2-6 to a segm., oblong, usually nearly straight, often double. Hk. Sp. 3. 

 p. 226. 



Hab. Scandinavia by way of Siberia to Japan. 



178. A. (Athyr.) spinulosum, Baker ; st. G-12 in. 1., scattered, firm, erect, 

 naked, straw-coloured, more or less clothed throughout with lanceolate pale- 

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

 pinnae on each side, the lowest much the largest, 6-9 in. 1., 2|-3 in. br., ovate- 

 lanceolate ; pinnl. lanceolate, cut down to the rachis on each side into 6-9 

 oblong-rhomboidal mucronate segm., 2 lin. 1., 1 lin. br., which are sharply 

 toothed ; texture herbaceous ; rachis firm, naked, or nearly so ; sori 2-10 to 

 a segm., usually round and the invol. ovate, hut occasionally oblong, and the 

 invol. slightly curved. Cystopteris spinulosa, Max. Fl. Amur. p. 340. 



Hab. Amur-land, Maximowicz; Manchuria, Wilford, 1163 ; Korea, Wilford, 908. 



179. A. (Athyr.) subtriangulare, Hk. MSS. ; st. 6-12 in. 1., firm, erect, naked, 

 clothed towards the base with lanceolate pale-brown scales ; fr. 1 ft. each way, 

 deltoid, quadripinnatifid, with 12-18 pinnce on each side, the lowest much the 

 largest, 6-9 in. 1., 2 in. br., lanceolate ; pinnl. lanceolate, cut down to the rachis 

 on each side into 9-12 close elliptic-rhomboidal segm., 2 lin. 1., 1 lin. br., which 

 are inciso-serrated, sometimes halfway down ; texture herbaceous ; rachis firm, 

 naked ; sori 2-12 to a segm., roundish, but the lower invol. quite horseshoe- 

 shaped. Athy. Hookerianum, Moore. 



Hab. Sikkim, 10-12,000 ft. ; gathered by Dr. Hooker. Pinnae more numerous than 

 in the preceding, the segments narrower, more abundantly but not so sharply toothed, 

 the sori more copious, and the involucre different. 



180. A. (Athyr.) medium, Hk. ; st. tufted, 4-6 in. 1., firm, erect, densely 

 clothed throughout with crisped linear reddish-brown scales ; fr. 6-9 in. 1., 

 4-6 in. br., subdeltoid, tripinnate, with numerous spreading pinnce on each side, 

 the lowest 3-4 in. 1., 1-1| in. br. ; pinnl. numerous, lanceolate-rhomboid al, the 

 lobes ovate-acuminate, in the lower part reaching down nearly or quite to the 

 rachis ; texture herbaceous ; rachis firm, erect, fibrillose ; veins pinnate, con- 

 spicuous ; sori copious, often 6-8 to a segm. ; invol. roundish, reniform. Hk. 

 Sp. 3. p. 227. Ic. t. 43. 



Hab. Tristan d'Acunha. A well-marked species, which was placed by Carmichael in 

 Aspidium. 



** Fronds lanceolate or ovate-lanceolate. Sp. 181-199. 



down to the rachis below into blunt ovate-rhomboidal/>mw., which are broadly 

 lobed about halfway down to the midrib ; texture herbaceous ; both surfaces 

 slightly hairy and glandular ; sori 2-6 to a pinnl., placed near the base of the 

 teeth ; invol. hispid, lunulate. Hk. Sp. 3. p. 220. Athyrium, Eaton. 



Hab. Loo-Choo Islands. A small plant with the habit of Cystopteris fmgilis, and a 

 slender wide-creeping rhizome. 



182. A. (Athyr.) Hohenackerianum, Kunze ; st. tufted, 2-4 in. ]., firm, erect, 

 clothed throughout rather closely with linear-subulate scales ; fr. 6-9 in. 1., 

 l|-3 in. br., ovate-lanceolate, with numerous lanceolate pinnce on each side, 

 which are cut down below nearly or quite to the rachis into ovate inciso-serrated 

 pinnl. ; texture herbaceous ; rachis naked or scaly below ; sori copious, oblong; 

 invol. conspicuous, some distinctly curved. Hk. Sp. 3. p. 220. 



2 F 



