FLORA VITIENSIS. 333 
been the subject of so much error that we give a diagnosis of both from the original specimens now in 
Herb. Mus. Brit. 
C. affinis, Sw. ]. e. (non Schk. Fil. p. 129, nec Hook. Syn. Fil. p. 27, nee Brack. U. S. Expl. Exped. 
Filices, p. 283) ; stipite glabro; frondibus bipinnatis, coriaceis, supra opaco-viridibus, infra pallidioribus, 
supra preter raches costasque sparse hirsutas glaberrimis, infra ad costam nervosque paleis albidis ciliatis 
squamulosis; pinnis subpetiolatis elongato-oblongis, acuminatis; pinnulis inferioribus subpetiolatis, supe- 
rioribus sessilibus, lineari-oblongis, acuminatis; segmentis subfalcatis, lineari-oblongis, acuminatis, crenatis, 
basibus solutis, aliis pinnatifidis, e basi ad mediam soriferis; nervis plerumque bifurcatis 2; soris in fur- 
caturam primariam insidentibus, coste adpressis; receptaculo globoso; indusio rigide membranaceo, per- 
sistente. - 
C. extensa, Sw. l.c. (Schk. Fil. p. 127, Tab. 132, a-c); stipite rachique punctis asperis; frondibus 
bipinnatis, supra viridibus infra pallidioribus, supra preter raches costasque sparse hirsutas glaberrimis, 
infra ad costam nervosque paleis albidis magnis rotundato-ovatis ciliatis sparse instructis; pinnis sessili- 
bus oblongo-ovatis; pinnulis sessilibus, elongato-acuminatis; segmentis oblongis, obtusis, serratis, patenti- 
bus; nervis fureatis.—Forster's specimen consists of two barren pinne attached to the rachis. Dryan- 
` der had referred two specimens from the Pacific Islands, collected by Forster, to Polypodium extensum, 
` Forst., and on the authority of these specimens, R. Brown referred the species to Alsophila. These spe- 
cimens, however, belong to Alsophila lunulata, R. Brown, which can easily be distinguished from Forster's 
P. extensum by the larger size of the pinnz and pinnules, the much smaller serratures of the segments, 
confined ehiefly to the upper part, and the simple bullate scales on the costz. I have no means of deter- 
mining whether the species belongs to Cyathea or Alsophila, and therefore let Swartz's name remain. 
Amphicosmia Tahitensis, Moore, Ind. Fil. p. 61. (Alsophila Tahitensis, Brack. U. S. Expl. Exped. 
Filices, p. 288. t. 40. fig. 2), was found in Tahiti (Brackenridge). 
Hemitelia D’ Urvillei, Mett. Linnea, 1869, p. 160, from Tahiti (D'Urville, Chauvin, Vesco, Vieillard). 
1. C. propinqua, Mett. Mig. Ann. Mus. Bot. Lugd.-Bat. vol. i. p. 56; stipite semitereti, 
basi paleaceo, antice suleato tuberculato; frondibus subcoriaceis, supra lete, infra pallide viridibus, 
preter rhaches costasque supra adpresse ferrugineo-hirsutas glaberrimis; pinnis subpetiolatis elon- 
gato-oblongis; pinnulis oblongis acuminatis pinnatipartitis; segmentis oblongis, obtusis, subfalcatis, 
crenatis, basalibus externis minoribus; nervis tenuibus fureatis; soris inter costam et marginem zequi- 
distantibus; indusio globoso, irregulariter rumpente.— C. affinis, Brack. U. S. Expl. Exped. Filices, 
p.283. C. leucolepis, Hook. Syn. Fil. p. 26 (in part). C. affinis, Hook. l.c. p. 27 (in part). 
—Vanua Levu (Harvey! Brackenridge). Also from the Soloman Islands (Milne!). 
This is a well-marked species, easily distinguished from C. affinis, Sw., with which it has been con- 
founded, by the form of the pinnz, the broader, more obtuse, and less coriaceous segments, and the brown 
pubescence of the rachis and costa on the upper side. 
III. Alsophila, R. Brown, Prodr. p. 158. Sporangia in receptaculo globoso v. oblongo e 
ven: bifurcatione v. medio orta sessilia, soros sparsos seriatosve, interdum subconfluentes, formantia. 
Indusia e pilis squamisve laceris receptaculi.—Filices plerumque arborescentes, frondibus herbaceis, 
amplis, bipinnatifidis bipinnatisve, nervis furcatis v. simplicibus.— HaplopAlebia, Mart. Ic. Pl. Crypt. 
64. Dicranophlebia, Mart. 1. c. 67. Chnoophora, Kaulf. Enum. Fil. p. 250. Trichopteris, Presl, 
Tent. Pter. p. 58.  Gymnosphera, Blume, Enum. Pl. Jav. p. 242.  Dichorezia, Presl, Die Gefassb. 
p. 86. Lophosoria, Presl, l.c. p. 37. Amphidesmium, Schott, Gen. Fil. t. 1.  Metazya, Presl, Tent. 
Pter. p. 59. 
In addition to the species described below, the following oceur in tropical Polynesia:—1. A. 
Samoensis, Brack. U. S. Expl. Exped. Filices, p. 287. t. 40, from the Samoan Islands (Brackenridge), and 
Louisiade Archipelago (M*Gillivray!). 2. A. decurrens, Hook. Sp. Fil. vol. i. p. 51, from Tahiti (D. Nel- 
son!), Aneitum (M'Gillivray !), Samoan Islands (Brackenridge), and New Caledonia (Vieillard). 8. A; 
Nove Caledonia, Mett. Ann. des Sc. Nat. 1861, p. 82, from Kanala, New Caledonia (Vieillard, n. 1633). 
4. A. Tahitensis, Brack. U. S. Expl. Exped. Filices, p. 288, from Tahiti (Brackenridge). 
1. A.lunulata, R. Brown, Prodr. p. 158; Brack. U. S. Expl. Exped. Filices, p. 285, t. 39; 
[PUBLISHED OCTOBER 30, 1869.] 2x 
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