38. ASPLENIUM, EUASPLENIUM. 199 



fft Pinnce numerous, linear or linear-oblong, usually ample, acute or acuminate. 

 Sp. 47-103. 



A. Group of A.salicifolium. Pinnce equal or nearly so on both sides at the base. 

 Sp. 47-60. 



47. A. angustifolium, Mich. ; st. tufted, 1 ft. or more 1., erect, brownish, slightly 

 scaly below ; fr. 18-24 in. 1., 4-6 in. br., lanceolate-oblong, flaccid, with 20-30 

 subsessile horizontal pinnce on each side, the sterile ones the largest, 3-4 in. 1., 

 \ in. br., acuminate at the point, the edge obscurely crenate, the base rounded 

 and equal on both sides ; fertile pinnce narrower and more distant ; texture thinly 

 herbaceous ; veins sometimes twice forked ; sori very close and regular, extending 

 from the midrib nearly to the edge. Hk. Sp. 3. p. 115. 



Hab. Canada, southward to the Southern United States. A very distinct species. 



48. A. multilineatum, Hk. ; st. 6 in. 1., firm, erect, naked, greyish-green ; fr. 

 12-18 in. 1., 6-8 in. br., oblong-lanceolate, with a long linear-lanceolate terminal 

 pinna and 9-18 lateral ones on each side, which are 4-6 in. 1., ^-J in. br., the 

 point acuminate, the edge faintly toothed, but the point more deeply, the base 

 cuneato-truncate with a short petiole ; texture herbaceous ; colour dark-green ; 

 rachis naked ; veins mostly simple, with sori on each reaching from the midrib 

 to the edge. Hk. Sp. 3. p. 102. A. distans, Brack. 



Hab. Samoa and Fiji. Characterized by its simple veins, which branch from the 

 midrib at an angle of from 70 to 80, and close regular rows of sori. 



49. A. longissimum, Blume ; st. tufted, 3-12 in. 1., strong, erect, blackish, nearly 

 naked ; fr. 2-3 ft. 1., 4-6 in. br., lanceolate elongate, proliferous and rooting at 

 the apex, with very numerous horizontal pinnce on each side, which are 2-3 in. ]., 

 j- in. br., the point acuminated, the two sides nearly equal, with a distinct 

 central midrib, the edge slightly toothed, the base on both sides often auricled ; 

 texture herbaceous ; rachis dark-coloured, strong, slightly villose ; veins forked, 

 oblique ; sori numerous, in 2 regular rows on each side the midrib and reaching 

 nearly to the edge. Hk. Sp. 3. p. 149. t. 190. 



Hab. Java, Borneo, Malacca, Mauritius. 



50. A. Wightianum, Wall. ; st. tufted, 6-9 in. 1., greenish, naked ; fr. 12-18 

 in. 1., 6-8 in. br., oblong-lanceolate, with 6-9 pinnce on each side, which are dis- 

 tinctly stalked, and the lowest 2 in. apart, 5-6 in. 1., -|-| in. br., the point acumi- 

 nated, the edge irregularly crenate, the base gradually truncato-cuneate, equal 

 on both sides ; texture coriaceous ; colour pale-green ; veins inconspicuous, distant, 

 often forked ; sori distant, falling short of the edge. Hk. Sp. 3. p. 105. t. 167. 

 A. longipes, Fee, Hk. Sp. 3. p. 106. 



Hab. Madras and Ceylon. 



51. A. Sumatranum, Hk. ; st. 6-9 in. 1., firm, erect, grey, naked ; fr. 18 in. 1., 

 6 in. br., with a long narrow linear terminal pinna and 6 erecto-patent ones on 

 each side, which are 6 in. 1., f in. br., the point acuminate, the lower part ob- 

 scurely undulated, the upper part crenate, the base equally truncato-cuneate 

 on both sides, decurrent so as to form a distinctly-marked wing to the rachis in 

 the upper part ; texture very coriaceous ; veins very oblique, usually once forked ; 

 sori long, reaching nearly from the midrib to "the edge. Hk. Sp. 3. p. 110. 

 t. 168. 



Hab. Sumatra, Teschemacher ; Fiji, Daernel. 



52. A. salignum, Blume ; st. 4-6 in. 1., slender, naked ; fr. 6 in. 1., about 6 in. 



