38. ASPLENIUM, DAREA. 221 



Darea, Juss. (Cosnoptcris, Bory). Veins simple, ultimate divisions of the 

 frond narrowly linear ; sori linear or linear-oblong, marginal or submarginal. 

 Sp. 156-177. See also Sp. 62, 144. Fig. 38. b. c. 



* Fronds 6-9 in. L, lanceolate or subdeltoid. Sp. 156-164. 



156. A. (Darea) Mannii, Hk. ; st. tufted, 1 in. or more 1., slender, naked ; fr. 

 1-2 in. 1., 1 in. br., lanceolate-deltoid, the upper branches simple, the lower ones 

 once or twice forked dichotomously ; primary or secondary branches j-J in. 1., 

 not more than J lin. br. ; texture thinly herbaceous, a single vein in each branch ; 

 sori oblong, solitary, marginal. Hk. 2nd Cent. t. 60. 



Hab. Cameroon Mountains and Fernando Po, discovered by Gustavo Mann ; and 

 gathered also lately in Zambesi Land by Dr. Kirk. 



157. A. (Darea) brachypteron, Kunze ; st. tufted, 2-4 in. 1., wiry, naked ; fr. 

 4-6 in. 1., 1-1^ in. br., with 12-24 horizontal pinnae on each side, of which from 

 half to nearly the whole of the lower side is cut away, the largest ^- in. L, cut 

 down to the rachis into simple or forked linear pinnl. 1-1| lin. 1. ; texture 

 herbaceous ; rachis slender, naked ; sori solitary, often quite marginal. Hk. Fil. 

 JEx.t..U. 



Hab. Madagascar, Natal, Angola, and Guinea Coast. 



158. A. (Darea) Dregeanum, Kunze ; st. 2-4 in. L, grey, naked ; fr. 6-9 in. 1., 

 2-3 in. br., flaccid and rooting at the point, with numerous flaccid pinnce on each 

 side, some of which have half the lower side cut away ; the largest 1-lj in. L, 

 cut down into simple or slightly-forked linear pinnl. j-f in. 1. ; texfiire 

 herbaceous ; rachis naked ; sori solitary, submarginal. Hk. Sp. 3. p. 214. 



Hab. Natal. Very doubtfully distinct from A. bi-acJiypteron, with which it is joined by 

 Mettenius. 



159. A. (Darea) oltusilobum, Hk. ; st. tufted, 2-4 in. 1., naked, greenish ; fr. 

 6 in. 1., 2 in. br., with 9-12 subdeltoid pinnce on each side, of which only the 

 inner third on the lower side is cut away, the largest 1 in. 1., f in. br. ; lowest 

 pinnl. f in. deep, flabellately cut into 3-5 linear lobes ; texture herbaceous ; 

 rachis green, naked ; veins one in each fork ; sori submarginal. Hk. Ic. t. 1000. 



Hab. Tanna and Aneiteum ; and a less-divided plant gathered by Dr. Seemann in Fiji 

 is probably the same. Closely allied to the two preceding. 



160. A. (Darea) dichotomum, Hk. ; st. tufted, 1 in. 1., firm, erect, greenish ; 

 fr. 3-4 in. L, 1-1| in. br., oblong, acute, tripinnate, with 8-12 pinnce on each 

 side, which are truncate on the lower side, cut down to a narrow compressed 

 rachis, only the lower pinnl. again pinnatifid ; ult. segm. 1^-2 lin. L, % in. br. ; 

 texture herbaceous ; main rachis compressed, greenish, naked ; one vein to each 

 segm. ; sori solitary, linear, quite marginal. Hk. Sp. 3. p. 210. 2nd Cent. t. 39. 



Hab. Borneo. 



161. A. (Darea) bipinnatum, Brackenr. ; st. tufted, 2-4 in. L, naked, wiry, 

 slender ; fr. 6-8 in. 1., 1-1 in. br., with 12-20 close-placed erecto-patent pinnce 

 on each side, the largest ^-| in. 1., f in. br., cut down to the rachis into linear 

 slightly-flattened pinnl. % in. deep, the lowest again pinnatifid ; texture subcori- 

 aceous ; rachis firm, erect, naked ; veins one in each segm. ; sori small, solitary, 

 marginal. D. furcata, Brack, p. 170. A. Seemanni, Carruth. 



Hab. Fiji ; gathered by Brackenridge, Seemann, and Milne. 



