226 38. ASPLENIUM, ATHYRIUM. 



Hab. Scinde, Peninsular India, Ceylon. Habit of a small form of Filix-fcemin^ t 

 but with more sausage-like sori and a fibrillose stem. 



183. A. (Atliyr.) grammitoides, Hk. ; st. subtufted, 3-4 in. 1., firm, erect, 

 copiously scaly ; fr. 6-8 in. 1., l|-2 in. br., lanceolate, with numerous lan- 

 ceolate-falcate pinna? on each side, which are 1-1^ in. 1., J- in. br., the two 

 sides unequal, the point bluntish, the edge irregularly inciso-crenate, the upper 

 side distinctly auricled at the base ; texture herbaceous ; rachis chaffy, winged 

 upwards ; veins pinnate ; sori linear-oblong in two regular rows placed 

 obliquely, the lower ones slightly curved, often diplazioid. Hk. Sp. 3. p. 228. 

 Ic. t. 913. 



Hab. Peninsular India, Java, Philippines, Sandwich Islands. The Indian plant is 

 almost destitute of scales upon the stem and rachis. 



184. A. (Athyr.) thelypteroides, Michx. ; st. 1 ft. 1., erect, polished, straw- 

 coloured ; fr. 1-2 ft. 1., 6-12 in. br., lanceolate, with numerous spreading pinnae, 

 the lower ones 4-6 in. 1., 1 in. br., cut down to a broadly-winged rachis into 

 numerous nearly entire elliptical spreading pinnl. ; texture herbaceous ; rachis 

 sometimes slightly hairy ; sori in close regular rows reaching nearly from 

 the midrib to the edge, slightly curved, the lower ones often double. Hk. Sp. 3. 

 p. 229. 



Hab. Canada, United States, Amur-land, Himalayas (ascending to 10,000 ft.), Penang. 

 Easily distinguished by its long sori in very regular rows. 



185. A. (Athyr.) decurtatum, Link ; st. 1 ft. or more 1., erect, straw-coloured 

 above> deciduously scaly below ; fr. 2-3 ft. 1., 9-12 in. br., with very numerous 

 close-placed spreading pinnas 4-6 in. 1., 1 in. br., cut down nearly to the rachis 

 throughout into blunt entire lobes with parallel sides, 2 lin. br. ; texture 

 herbaceous ; both surfaces pubescent ; veinlets simple, regularly pinnated ; sori 

 oblong, falling short of both edge and midrib, the lower ones curved. Hk. Sp. 3. 

 p. 226. 



Hab. Brazil, Lindberg, 620. Very like the preceding in habit and cutting, but the 

 sori much shorter. 



186. A. (Athyr.) deparioides, Brack. ; st. 12-18 in. 1., firm, erect, smooth, 

 greyish ; fr. 3 ft. 1., 1 ft. br., lanceolate, with numerous pinnce on each side, the 

 lower ones 6-8 in. 1., 1 in. br., cut down nearly to the rachis throughout into 

 rather distant oblong-obtuse pinnl., which are slightly inciso-crenate ; texture 

 subcoriaceous ; rachis firm, naked, proliferous ; veins conspicuous, once pinnate 

 in each pinnl., the veinlets simple, distant ; sori oblong, one to each veinlet 

 touching the edge, the lower ones very slightly curved. Brack, p. 172. 



Hab. Oahu ; and we have a single pinna of a plant from Sumatra, gathered by Tesche- 

 macher, with similar marginal sori, but with considerably broader pinnules not reaching 

 more than two-thirds of the way down to the midrib. 



187. A. (Athyr.) Skinneri, Baker ; st. 6-9 in. 1., erect, greyish, slightly scaly 

 below ; fr. 9-15 in. 1., 6-9 in. br., ovate-lanceolate, with numerous pinnce on each- 

 side, the lower ones 1-1 in. apart, 3-5 in. 1., 1 in. br., cut in the upper part 

 halfway down and below nearly to the rachis into oblong- rhomboidal blunt 

 inciso-crenate pinnl., often J in. br. ; texture herbaceous ; rachis naked, slender ; 

 veinlets of the pinnl. sometimes forked ; sori small, linear-oblong, 2 to 12 to a 

 pinnl. Athyrium, Moore. 



Hab. Guatemala. Perhaps this should be joined with the next, but the pinnae and 

 pinnules are much less deeply cut, and the latter so broad that they are slightly 

 imbricated. 



