214 38. ASPLENIUM, EUASPLENIUM. 



fr. 2-3 in. 1,, ] in. br., lanceolate-deltoid, with several pinnce on each side, the 

 lowest of which are distinctly stalked, deltoid, about \ in. each way, cut down to 

 the rachis in the lower part into spathulato-cuneate pinnl., sharply serrated 

 round the outer edge ; texture coriaceous ; rachis naked, green, compressed, 

 winged upwards ; veins obscure ; sori short, copious. Hk. Sp. 3. p. 177. 



Hab. United States. Intermediate between Ruta-muraria and Adiantum-nigrum. 



121. A. Adianturn-nigrum, Linn. ; st. tufted, 6-9 in. 1., nearly naked, polished, 

 chesnut-brown ; fr. 6-12 in. 1., 4-6 in. br., sub-deltoid, with numerous pinnae on 

 each side, the lower ones deltoid, 2-3 in. 1., 1^-2 in. br., cut down to a com- 

 pressed winged rachis into numerous lanceolate-deltoid pinnl., truncate on the 

 lower side, cut down nearly or quite to the rachis into oblong or spathulate 

 segm., sharply toothed round the outer edge ; texture coriaceous ; rachis polished 

 and chesnut-coloured below, upwards winged and compressed ; veins obscure, 

 oblique ; sori copious, at last often occupying the whole under surface of the 

 segm. ]3, A. acutum, Bory ; habit more graceful, fr. more finely cut ; ult. div. 

 linear-spathulate with mucronate teeth. y, A. obtusum, Willd. ; ult. segm. short, 

 flabellato-cuneate, often ^ in. br., habit more slender. A. Serpentini, Tausch. 

 d, A. Gaudichaudianurn, Hk. ; texture very thick ; pinnl. distant, lanceolate, 

 with small distant oblong-spathulate ult. segm. Hk. Sp. 3. p. 187. Brit. F. 

 t.33. 



Hab. Norway and Britain to the Cape Verdes, Azores, Canaries, Cameroon Moun- 

 tains, Algiers, Abyssinia, Himalayas, and Siberia ; Cape Colony, Sandwich Islands. 

 Reported also from Java, Virginia, Porto Rico, St. Helena, and Mascaren Isles. 



122. A. solidum, Kunze ; st. tufted, 4-6 in. 1., dark chesnut-brown, naked, 

 polished ; fr. oblong-deltoid, 6-12 in. ]., 4-6 in. br., with 8-12 pinnce on each 

 side, which decrease gradually upwards, the lowest lanceolate-deltoid, 4 in. 1., 

 2 in. br., cut down to the rachis into several quite distinct deltoid pinnl., which 

 are again cut down below to the rachis into sharply serrated rhomboidal segm.; 

 texture subcoriaceous ; rachis chesnut-brown and polished like the stem ; veins 

 flabellate, channelled ; sori linear-oblong, when mature sometimes filling up 

 nearly the whole width of the segments. Hk. Sp. 3. p. 167. t. 201. 



Hab. Cape Colony ; and a plant which appears to be the same has been gathered by 

 Oldham in Japan. Very near the preceding, with which it probably should be joined. 



123. A. dissectum, Brack. ; st. 6-9 in. 1., firm, erect, greyish, naked ; fr. 12-18 

 in. 1., 4-6 in. br., cut down to the rachis into numerous lanceolate-deltoid pinnce 

 on each side, the lowest of which are 4-6 in. 1., 1^-2 in. br. ; pinnl. and segm. 

 distant, subdeltoid, the latter cut into narrow linear ult. divisions, 1-2 lin. 1., 

 | lin. br., acute or acutely toothed at the apex ; texture subcoriaceous ; rachis 

 firm, ureyish ; veins one in each ult. division ; sori usually solitary. Brack. 

 Fit. U.S. Expl. Exp. t. 24. 



Hab. Sandwich Islands ; gathered by Douglas and Brackenridge. 



124. A. cuneatum, Lam. ; st. tufted, 6-9 in. 1., firm, erect, naked ; fr. 6-15 in. 

 ]., 6-9 in. br., with numerous spreading pinnce on each side, the lower ones 

 3-4 in. 1., 1-1^ in. br., lanceolate-deltoid, cut down to the rachis into several 

 distinct ovate-cunetite pinnl., which are inciso-dentate and cut down in the lower 

 part nearly or quite to the rachis ; texture subcoriaceous ; rachis firm, greyish, 

 nearly naked ; veins fine, conspicuous on the upper surface ; sori linear, sub- 

 flabellate. Hk. Sp. 3. p. 168. 



Hab. Tropical America, "West Indies to Brazil ; Polynesian Islands to Java and 

 Hong-Kong ; Cape Colony to Mozambique, Johanna Island, and Seychelles. A. splen- 

 dens, Kze. Hk. Sp. 3. p. 168, does not seem to be safely separable. 



125. A. furcatum, Thunb. ; st. tufted, 4-8 in. 1., firm, erect, clothed with 



