110 ASPLENIUM, § EUASPLENIUM. 



auricle, inferior obliquely truncated subparallel with the rachis, 

 petiole short very pale coloured singularly deflexed com- 

 pressed subdecurrent, veins immersed nearly all forked distant, 

 sori erecto-patent linear contiguous to the depressed and 

 obscure costa but not extending to the margin, involucres 

 firm subcoriaceous. (Tab. CLXII.) — A. Mathewsii, Moore, 

 MS. in Herb. Nostr. and lad. Fit. p. 145. 



Ilab. Peru, Matheirs, n. 1851. — Of this well-marked species I possess a solitary 

 specimen from its discoverer, l)ut that is perfect, only wanting the caudex. The 

 whole frond is of a pecwliar ])ale brown colour when dry, ami the texture is remark- 

 able, quite even on the upper surface, opatpie, the veins so sunk as to be obsolete, 

 and the costa even in no way elevated. Still more singular are the short, deflexed, 

 compressed, coriaceous petioles, dilated or decurrent at the base (above and below), 

 so as to form a short wing on the rachis. The superior i)innaj are gradually 

 smaller, the terminal one has a large auricle on one side at the base. 



60. A. (Euasplenium) Sumatranum, Hook. ; stipes a span 

 and more long, erect stout compressed furrowed, frond 1^ 

 foot long very rigid coriaceous glabrous impari-pinnate, pinnae 

 1.3 (in our specimen) distant erecto-patent 6-7 inches long 

 lanceolate obtusely acuminate obscurely serrated tapering 

 gradually and equally, at the base sessile and decurrent for 

 some way and forming a coriaceous wing on the rachis, upper 

 ones confluent by means of the wing, ultimate pinnoe larger 

 than the rest, veins sunk obscure erecto-patent simple and 

 forked, sori long linear but unequal, most of them at a distance 

 from the costa and extending to the margin, involucre mem- 

 branaceous, rachis partially winged. (Tab. CLXVIII.) 



Hal). Sumatra, Teschcmacker, in Herb. Nostr. — A very distinct species, of 

 which I have seen only the solitary specimen in my herbarium. It is remarkable 

 for its thick and coriaceous texture, turning brown in drying, and for the attenuated 

 base of the pinnae, which become decurrent, the upper ones so much so as to form 

 a wing which unites the pinnic, while in the rest it only forms a decurrent margin 

 between each pair of pinnsc. 



61. A. (Euasplenium) cultnfolium, L. ; "fronds pinnate, 

 pinntc falcate lanceolate inciso-serrate with an angle at the 

 base below" (" deorsum angulatis," L. ; "lowest ones auricled 

 above," Sw.). Linn. Sp. PI. p. 15:38. — Siv. Syn. Fit. p. 7S. 

 Willd. Sp. PI. v. p. 311. Lonchitis latifoHa, etc.. Plum. Fil. 



p. 45. t. 59} Metten. jisplen. p. 9S. Diplazium cultrifolium, 

 Moore, Ind. Fil. p. 122. 



Ilab. Martiiuque, Plumier. — Linnaeus founded this species upon Plinnier's 

 (probably exaggerated) figure above quoted, a West Indian Fern, which no one 

 seems to have since recognized with anything like certainty, unless it be Mr. 

 Moore, who refers it to the genus " Diplazium {D. cultrifolium)." Roxburgh's 



