372 FLORA VITIENSIS. 
1. V. rigida, Kaulf. Enum. Fil. p. 193; rhizomate repente, squamis lanceolatis angustis 
acuminatis tecto; frondibus fasciculatis, rigidis, coriaceis, elongatis, linearibus, apice acutis, basi 
angustioribus ; soris іп margine continuis.— V. elongata, Św. Syn. Fil. p. 109. V. ensiformis, Sw. 
l. e. p. 109.— Viti (Seemann ! n. 719 and 720; Græffe !). Also from Sandwich Islands (Banks and 
Solander! Nelson! Collie! Barclay! Macrae! Strickland! Hillebrand!), Aneitum, New Hebrides 
(M'Gillivray !), and Mallicolla (Sinclair !). 
XLIV. Syngramma, J. Smith, Hook. Journ. 1845, p. 168. Sporangia in soros superficiales 
lineares subreticulatos collecta. Vena simplices v. furcatz, infra parallelæ, ad marginem anasto- 
mosantes.—Filices rhizomate erecto v. repente, frondibus simplicibus membranaceis teneris diplo- 
taxicis, fertilibus longius petiolatis angustioribus.— Callogramme, Fée, Gen. Fil. p. 169. 
Besides the species mentioned below, the following occurs in tropical Polynesia :— $. quinata, Hook. 
Sp. Fil. vol. v. p. 152. t. 297, from Solomon's Islands (Milne! n. 579). 
1. S. pinnata, J. Sm. Hook. Journ. (1845), p. 168. t. 7 C; rhizomate repente; stipitibus semi- 
teretibus, basi setosis; frondibus coriaceis, glabris, simplicibus, ternatis v. pinnatis; pinnis lineari- 
lanceolatis, attenuatis, basi oblique cuneatis, margine cartilagineo leviter undulatis; soris linearibus 
v. reticulatis, interdum rotundatis (var. В.).— Gymnogramme pinnata, Hook. Sp. Fil. vol. v. p. 151. 
С. subtrifoliata, Hook. l.c. Hemionitis elongata, Brack. U.S. Expl. Exped. Filices, p. 66. t. 8. 
— Viti (Seemann! n. 715; Harvey! U.S. Expl. Exped.). Also from Erromango (M'Gillivray !). 
Isle of Jobi (Barelay !). 
Var. B. rotundata. —Viti (Milne! Greffe !). 
XLV. Hemionitis, Linn. Syst. Nat. ed. 1. Sporangia venis anastomosantibus imposita, 
in soros superficiales lineares reticulatos collecta. Venz uniformes, anastomosantes, areolis elongato- 
hexagonalibus.— Filices rhizomate erecto v. repente, frondibus cordatis sagittatis palmatis v. pinnatis, 
coriaceis v. herbaceis. 
1. Е. lanceolata, Hook. Second Cent. Ferns, t. 55; rhizomate repente, pilis ebeneis tecto ; 
stipitibus badiis, nitidis; frondibus coriaceis, ovato-lanceolatis, acuminatis; costa valida subtus promi- 
nente straminea nitidissima, venis patentibus, ubique anastomosantibus, areolas oblongas hexagonas 
formantibus, venis omnibus soriferis.— Viti (Seemann! n. 717; Milne). 
Taisus VIII. ACROSTICHEÆ. 
XLVI. Acrostichum, Linn. Syst. Nat. ed. 1.  Sporangia paginam totam frondis fertilis 
tegentia, in soros superficiales collecta. Veng liberæ, parallele, furcatæ.—Filices rhizomate repente 
v. rarius scandente squamigero, frondibus simplicibus integris, diplotaxicis, fertilibus sæpe angus- 
tioribus.— Elaphoglossum, Schott, Gen. Fil. t. 15. 
Besides the species described below, the following also occur in tropical Polynesia :—1. A. pellucidum, 
Gaudichaud, * Bonite, t. 79. f. 5-7 (А. splendens, Brack. ; А. micradeniwm, Fée), from the Sandwich Islands 
(Macrae! Hillebrand! Gaudichaud, U. $. Expl. Exped.). 2. А. splendens, Bory in Willd. Sp PI. vol. v. 
p- 104, from the Sandwich Islands (Nelson! Strickland! Milne! Hillebrand! Macrae! etc.). 3. A. æmu- 
lum, Kaulf. Enum. Fil. p. 63. from the Sandwich Islands (Chamisso, Hillebrand! U.S. Expl Exped.). 4. 
Å. glabratum, Mett. Ann. Se. Nat. ser. 4. vol. xv. p. 54, from New Caledonia (Vieillard). 5. A. Samoense, 
Baker, Syn. Fil. p. 407, from the Samoan Islands (U. S. Expl Exped.). 6. А. Tahitense, Carr. ms. 
(Elaphoglossum Tahitense, Brack.), from Tahiti (Nelson! U. S. Expl. Exped.). 
1. A. Peejeense, Hook. Sp. Fil. vol. v. p. 199; rhizomate brevi, erasso, repente, paleaceo; 
stipitibus semiteretibus, basi paleaceis, fertilibus longioribus; frondibus coriaceis, submargiuatis, 
