374 FLORA VITIENSIS. 
XLIX. Peecilopteris, Presl, Tent. Pter. p. 241.  Sporangia paginam totam inferiorem 
frondis fertilis tegentia, in soros superficiales collecta. Ven irregulariter anastomosantes, venulis 
ultimis interdum liberis.—Filices rhizomate repente v. scandente, frondibus diplotaxibus simplicibus 
pinnatis v. bipinnatis.— Poikilopteris, Eschw. Linnea, ii. p. 117. Hymenodium, Fée, Hist. Acrost. 
р. 20. Neurocallis, Fée, 1. c. p. 19. 
In addition to the species described below, the following also occur in tropical Polynesia:—1. Р. 
Smithii, Carr. ms. (Cyrtogonium sinuosum, J. Sm. Hook. Journ. 1841, p. 403, quoad Cuming, n. 152), from 
Aneitum, New Hebrides (M'Gillivray !). 2. P. Brackenridgei, Carr. ms. (Lomagramma pteroides, Brack. 
(non Sm.) U. S. Expl. Exped. Filices, p. 83), from Tahiti (Nelson !), New Hebrides (C. Moore !), Samoan 
Islands (U.S. Expl. Exped.). 3. P. Requienianum, Carr. ms. (Acrostichum Requienianum, Gaudich. Voy. 
Freyc. р. 804. t. 4), from Aneitum, New Hebrides (M'Gillivray ! n. 60). 
1. P. Quoyana, Presl, Epim. Bot. p. 173 (excl. syn.); rhizomate repente, paleaceo; stipitibus 
semiteretibus, suleatis, basi dense paleaceis; frondibus membranaceis, glabris, pinnatis, apice 
attenuatis, sinuato-pinnatifidis, proliferis, fertilibus minoribus; pinnis oblongo-lanceolatis, pinna- 
tifidis, acuminatis, basi oblique cuneatis; laciniis sterilibus, oblongis, crenato-denticulatis, fertilibus 
oblongo-lanceolatis, petiolatis—Acrostichum Quoyanum, Gaudich. Voy. Uranie, p. 307. pl. 3. 
Heteroneuron Quoyanum, Fée, Hist. Acrost. p. 96 (excl. syn. Cyrtogonium laciniatum, J. Smith). 
Acrostichum lonchophorum, Kunze, Fil. p. 5. t. 2. Cyrtogonium palustre, Brack. U.S. Expl. Exped. 
Filices, p. 86. +. 12.—Viti (Seemann !). Also from Samoan Islands, Tahiti (Banks and Solander! 
Barclay ! U.S. Expl. Exped.), Raiatea (Collie!), and Upolu, Navigator’s Islands (Sir E. Ноше!). 
2. P. rivularis, Carr. ms.; rhizomate repente; stipitibus angularibus, paleaceis; frondibus 
membranaceis, glabris, oblongis, attenuatis, basi pinnatis, versus apicem sinuato-pinnatifidis, fertilibus 
minoribus; pinnis integris, oblongo-lanceolatis v. ovatis, obtusis, subfalcatis, apice proliferis.— Cyrto- 
gonium rivulare, Brack. U. S. Expl. Exped. Filices, p. 85. t. 11. f. 2.— Viti, Ovalau, banks of streams, 
on wet rocks in shady places (U. S. Expl. Exped.). 
3. P. polyphylla, Carr. ms.; rhizomate scandente, nudo, subquadrangulari, infime radicante ; 
stipitibus suleatis; frondibus pinnatis v. bipinnatis ; pinnis et pinnulis subalternis, subsessilibus ; pin- 
nulis sterilibus, oblongo-lanceolatis, erenato-serratis, sparsim paleaceis, fertilibus stipitatis, linearibus. 
—Lomogramma? polyphylla, Brack. U.S. Expl. Exped. Filices, p. 83. t. 12. f. 1. Chorizopteris 
bipinnata, Т. Moore, Ind. Fil. p. 257.—Viti (Seemann! n. 421, 713; Harvey! U.S. Expl. Exped.). 
Also from Aneitum, New Hebrides (C. Moore !). 
It is probable that Polybotrya Wilkesiana, Brack., is only a form of this plant with very narrow 
pinnules, in which the veining is reduced to a single costal mesh, or perhaps even to free venules. Both 
fertile and barren fronds, as figured by Brackenridge, agree in every respect with specimens collected by 
Harvey, except in the venation. 
The following species should be added here :—1. Hymenodium reticulatum, T. Moore, Ind. Fil. p. 14, 
from Sandwich Islands (Strickland! Hillebrand! Macrae! Chamisso, Gaudichaud, ete.). 2. Leptochilus 
varians, Mett. Ann. Se. Nat. ser. 4. vol. xv. p. 56, from New Caledonia (Vieillard). 
L. Hymenolepis, Каш. Enum. Fil. p. 146. t. 1. f. 9. Sporangia coste imposita, in soros 
superficiales lineari-elongatos apice frondium eollecta. Venæ anastomosantes, areolas irregulares 
formantes, ultimis venulis liberis.—Filices rhizomate repente, frondibus simplicibus opacis lineari- 
lanceolatis, apice contracto sporangiferis.— Macroplethus, Presl, Еріп. Bot. p. 141. 
1. H. ophioglossoides, Kaulf. Enum. Fil. p. 146 (excl. syn.) ; rhizomate repente, paleaceo ; 
stipitibus brevibus, glabris, sulcatis ; frondibus elongato- v. angusto-lanceolatis, subcoriaceis, glabris ; 
apice fructifero lineari-obtuso ; soris continuis, squamulis obductis.—Viti (Seemann! n. 726). Also 
from Aneitum, New Hebrides (M'Gillivray !), and Tahiti (Anderson ! Nelson D, 
