244 38. ASPLENIUM, ANISOGONIUM. 



midrib to the edge, but only those of different groups joining one another ; sori 

 reaching nearly to the edge and copiously double. /3, D. robusta, Fee ; pinnae 

 12-18 in. 1., deeply lobed in the upper part, in the lower cut down to the rachis 

 into distinct pinnl. 2 in. 1., | in. br. Hk. Sp. 3. p. 270. 



Hab. Polynesian and Malayan Islands, and sent lately by Dr. Ferd. Mueller from 

 Queensland ; Mascaren Isles, Angola, and Guinea Coast. The Assam station given in 

 " Species Filicum " is a mistake. 



271. A. (Aniso.) Chimborazense, Spruce, MSS. ; st. 3 ft. L, in. thick at the 

 base, brown, angular, densely clothed below with large linear-lanceolate brown 

 scales ; fr. 6 ft. 1., the apex pinnatifid, with lanceolate lobes towards the base of 

 the pinnatifid portion 4-6 in. L, below this about 16 pairs of pinnae, the 

 lowest 15 in. 1., 2^ in. br., the point suddenly acuminate, the edge slightly 

 undulated, the base narrowed suddenly on both sides ; texture thin but sub- 

 coriaceous ; rachis strong, naked, brown ; veins in groups of about six, not 

 Uniting till beyond half the way from the midrib to the rachis, the veins of the 

 same and separate clusters anastomosing copiously beyond this ; sori in slender 

 lines reaching two-thirds of the way to the edge. 



Hab. Foot of Chimborazo (alt. 3-4,000 ft.), Spruce, 5703. 



272. A. (Aniso.) rivale, Spruce, MSS. ; st. 18 in. L, strong, erect, brownish, 

 scaly towards the base ; fr. 4-5 ft. 1., the apex pinnatifid ; below this about 

 15 pairs of pinnce, the largest 8-9 in. 1., 2 in. br., the point acuminate, the edge 

 slightly repand, the base subcuneate on both sides ; texture papyraceous, only 

 the veins beneath slightly hairy ; veins pinnate, with a distinct barren vein in 

 the centre of each group and 6-8 lateral veinlets, all of which except the upper 

 one or two unite with those of the next group, beginning to do so within ^ in. of 

 the costa ; sori linear, medial, rarely double. 



Hab. Foot of Chimborazo (alt. 3-4,000 ft.), Spruce, 5700. 



273. A. (Aniso.) stenocarpum, Mett. ; fr. 5-8 ft. ]., 1^ ft. br. ; pinnce 

 numerous, close, the lower ones short-stalked, 9-10 in. 1., 2 in. br., the point 

 acuminate, sharply toothed, the edge broadly lobed to a depth of 1-3 lin., the 

 base truncate ; texture herbaceous ; only the rachis a,nd veins beneath slightly 

 hairy ; main veins 3-4 lin. apart ; veinlets 6-8 on a side, the lower ones ceasing 

 before they reach the edge, free or uniting with those of the next group, the 

 upper ones free ; sori reaching from the main vein more than halfway along the 

 veinlets. Mett. Fil. Nov. Gran. p. 232. 



Hab. New Granada, Lindig and Triana. The imperfectly -known A . chocoense, Triana, 

 resembles this, but the under surface is clothed, especially on the veins, with ferruginous 

 hairs, and the lower three or four veinlets of each group unite with those of the ad- 

 joining one. 



** Fronds bipinnate. Sp. 274-276. 



strong, 

 usually 



Or more br., the point acuminate, the edge more or less deeply lobed, the base 

 narrowed suddenly, often auricled ; texture subcoriaceous ; rachis often 

 pubescent ; ^ veins fine, copiously pinnated, 6-10 on each side in each lobe, 

 with a distinct barren central midrib, the veinlets of the different clusters 

 beginning to unite a short distance from the midrib, with lines of sori often on 

 all the lateral veinlets. Hk. Sp. 3. p. 268. Digrammaria, Presl. 



Hab. Himalayas to Ceylon, Hong-Kong, Formosa, Malayan Peninsula and Isles. 

 I), serampurense, Spreng., is a pubescent simply pinnate form. 



