Ferns of British India and Ceylon. 163 



broad, ovate-lanceolate ; pinnules lanceolate, cut down to the rachis 

 on each side into 6-9 oblong rhomboidal segments two lines long, 

 one line broad, which are sharply toothed or crenated; texture 

 herbaceous ; rachis naked or nearly so ; sori 2-10 to a segment ; 

 indusium slightly curved, or horseshoe-shaped, very small and thin. 

 Cystopteris, Max. Fl. Amur. 340. Baker in Hook. Syn. Fil. 225, 

 under Asplenium. Athyrium subtriangulare (Hook), Bedd. F. B. I. 

 t. 242. The supposed species, or variety, subtriangulare, does 7iot 

 differ from spimdosum, except that the teeth are less spinulose ; it 

 cannot, I think, be considered even a variety. 



Sikkim 10,000-12,000 feet; Lachen, Samding, Yeumtong. 



(Also in Manchuria, Amurland and Korea.) 



2. Athyrium Atkinsoni. {Bedd.) Stipes 6-12 inches long, 

 erect, straw-coloured, furnished towards the base with a fewlong narrow 

 pale-coloured scales; fronds 10-12 inches long, triangular, 10-12 

 inches broad at basal pinnae, gradually narrowing upwards, tripinnate, 

 with the tertiary pinnae deeply pinnatifid ; pinnae 7-8 pairs, the lowest 

 much the largest, about three inches broad ; texture herbaceous, 

 naked, secondary pinnae with the rachis winged, but the pinnules 

 (tertiary pinnae) often distinctly petioled, at least in the lower portion 

 of the pinnae, pinnatifid §— § down, the segments being more or less 

 crenated ; sori one to each segment on the basal vein, linear, curved 

 or almost reniform, never double ; veins terminating just within the 

 margin. Bedd. Fern. Sup. p. 11, t. 359. 



Sikkim at high levels. 



{Clarke s variety Andersoni is Athyrium fimbriatum, var. 

 sphojropteroides . ) 



3. Athyrium Hohenackerianum. {Kze.) Stipes tufted, 2-4 

 inches long, clothed throughout rather closely with linear-subulate 

 scales; fronds 6-18 inches long, 1^-3 inches broad, ovate-lanceo- 

 late; pinnae in numerous pairs, lanceolate, i-2§ inches long, cut 

 nearly or quite to the rachis into ovate or oblong serrated pinnules ; 

 texture herbaceous ; rachis naked upwards, scaly below ; sori copious ; 

 involucre conspicuous, linear-oblong, curved or horseshoe-shaped. 

 Hook. Syn. Fil. p. 225. Bedd. F. S. I. t. 157. 



