FLORA VITIENSIS. 357 
rare pinnatis; pinnis petiolatis, oblongis, acutis, pinnulis breviter petiolatis lineari-oblongis acumi- 
natis crenato-pinnatifidis; segmentis serrulatis; venis pinnatis, conniyentibus; soris linearihus, 
numerosis.—Hemionitis esculenta, Retz. Obs. Bot. vol. vi, p. 88. Asplenium esculentum, Presl, Rel. 
Feenk. vol. i, p. 45. Anisogonium esculentum, Presi, Tent. Pter. p- 116. Microstegia esculenta, 
Presl, Epim. p. 91. Asplenium ambiguum, Swartz, Syn. Fil. pp. 81, 274, Digrammaria ambigua, 
Hook. et Bauer, Gen. Fil. t. 56 (non Presl). Diplazium ambiguwm, Hook. Journ. 1857, p. 343. 
Callipteris ambigua, Moore, Ind. Fil. p, 216. Diplazium malabaricum, Spreng. Syst. vol. iv. p. 69. 
Calliptris malabarica, J. Sm. in Hook, Journ. 1841, p. 409.—Viti (U. 8. Expl. Exped.). 
5. D. arborescens, Sw, Syn. Fil. p. 92; rhizomate repente, paleis nigrescentibus dense onusto ; 
stipitibus sordide straminecis, superne glabriusculis; frondibus coriaceis, glabris, ovato-oblongis, 
acuminatis, bipinnatis; pinnis breviter petiolatis; pinnulis brevissime petiolatis, basi truncatis v. 
adnatis, pinnatifidis, lineari-lanceolatis; venis pinnatis; soris elongatis; indusio membranaceo, 
integerrimo.—Callipteris arborescens, Bory, Voy. p. 2838.—Viti (U. 8S. Expl. Exped.). Also from 
Hawaii (Mann) and Tahiti (U. 8S. Expl. Exped.). 
6, D. melanocaulon, Brack. U. 8. Expl. Exped. Filices, p. 144; stipitibus nigris, levibus, 
angulatis, basi incrassatis, paleis vestitis; frondibus glabris, supra atro-yiridibus, subtus pallidis, 
bipinnatis ; pitnis stipitatis, oblongo-lanceolatis, attenuatis; pinnulis alternis, sessilibus, oblongis, 
acuminatis, pinnatifidis, basi truncato-cuneatis; laciniis oblongis, falcatis, subacutis, serrulatis ; 
rachi communi flexuosa ; soris brevibus, decussatis,—Viti (Seemann ! n, 824; M‘Gillivray | Harvey ! 
Milne! Sir K, Home! U.S. Expl. Exped.). 
7. BD. coriaceum, Carr. in Herb, Mus. Brit. ; stipitibus angulatis, supra sulcatis, glabris; fron- 
dibus coriaceis, glabris, supra nigro-viridibus, subtus yiridibus, bipinnatis, ovato-acuminatis; pinnis 
elongato-triangulatis, petiolatis, apice acuminatis, serratis ; pinnulis oblongo-lanceolatis, acuminatis, 
pinnatifidis ; segmentis oblongis, subfalcatis, acute serratis; venis simplicibus, rare furcatis, crassis, 
supra prominulis, subtus sulcatis; soris brevibus; indusio membranaceo, margine integro.—Viti 
(Seemann ! n. 827, in part). 
This form was referred by Mr. Smith to his D. brevisorum, but it can be readily distinguished by the 
form of the sorus, which is almost invariably situated on a simple yein, and occupies nearly half the width 
of the segment ; when the vein is forked the sorus is continued some distance along the anterior branch. 
The sori at the base of the lower segments are diplazioid. The indusium is not ciliated. 
8. BD. polypodioides, Bl, Enum. Pl. Jav. p. 194; trunco erecto, paleis lanceolatis longe 
acuminato-setosis dense tecto ; stipitibus punctato-asperis, demum glabriusculis; frondibus membra- 
naceis, glabris, ovatis, bipinnatis; pinnis ovato-lanceolatis, acuminatis; pinnulis petiolatis v, sub- 
sessilibus, lanceolatis, acutis, basi truncatis, pinnatifidis; segmentis falcato-oblongis, acutis, serru- 
latis; nervis simplicibus, patentibus, parallelis; soris oblongis; indusio membranaceo, integerrimo. 
Viti (Seemann! n. 826), Also from Tahiti (Nelson !), 
9, D. Vitiense, Carr. ms.; frondibus amplis, herbaceis, bipinnatis; pinnulis petiolatis, lanceo- 
latis, acuminatis, obtuse lobatis ; rachide pubescente ; venis pinnatis; soris numerosis; indusio mem- 
branaceo.—Asplenium (Anisoyonium) Vitiense, Baker, Syn. Fil. p, 245.—Viti (Daernel). 
XXIII, Didymochlena, Desv. Berl. Mag, vol. v. p. 303. t. 7. fig. 6. Sporangia venis simpli- 
cibus imposita, in soros elliptico-oblongos juxta venz extremitatum utrinque geminatos collecta. 
Indusium soris geminis commune, ven subexcentrice impositum, circumeirea liberum. Ven 
flabellato-furcate, venulis liberis.—Filices caudice arborescente; frondibus bipinnatis, coriaceis, pin~ 
[PUBLISHED JUNE 1, 1871.] 3A 
