$32 FLORA VITIENSIS. 
Besides the species enumerated below, we have in tropical Polynesia—1. G. dicarpa, R. Brown, Prodr. 
p. 161, from Isle of Pines (M‘Gillivray!), and New Caledonia (Vieillard, n. 1674). 2. G. circinata, Sw. 
Syn. Fil. p. 165 (G. semivestita, Lab. Sert. N. Cal. t. 11), from New Caledonia (Labillardiére). 3. G. 
pinnata (Mertensia pinnata, Kze. Annal. Pter. p. 6), from Sandwich Islands, (Macrae!). A speci- 
men from Thunberg in Herb. Mus. Brit. of his Polypodium glaucum, Fl. Jap. p. 338 (Mertensia glauca, 
Sw.), shows that Kunze’s species is a good one. The Japan plant is glabrous, with elliptic-oblong branches 
and oblong obtuse segments, while in G. pinnata the rachis is hirsute above, and is sparsely covered with 
dark scales below, the branches are lanceolate, and the segments linear obtuse. 4. G. flabellata, R. Brown, 
Prodr. p. 161, from Aneitum (M‘Gillivray! n. 19) and New Caledonia (Labillardiére; Vieillard, n. 1674). 
5. G. Owhyhensis, Hook. Sp. Fil. vol. i. p. 9, from Sandwich Islands (Macrae!). To these should be added 
Stromatopteris moniliformis, Mett. Ann. des Sc. Nat. 1861, p. 84, t. 3, New Caledonia (Vieillard, 1571). 
1, G. flagellaris, Spreng. Syst. Veg. vol. iv. p. 25; stipite rachibusque teretibus ; fronde dicho- 
tome ramosa, glaberrima, subtus pallidiore, subcoriaceo-membranacea; ramis apice pinnas gemi- 
natas gerentibus; pinnis elongato-lineari-acuminatis; pinnulis adnatis erecto-patentibus linearibus, 
obtusis, in rachi secundaria decurrentibus.— Mertensia flagellaris, Bory in Willd. Sp. Pl. vol. v. p. 
74.—Viti Levu (Milne !). Collected also in Aneitum (M‘Gillivray ! n. 66). 
2. G. dichotoma, Hook. Sp. Fil. vol. i. p. 12; (G. Hermanni, R. Brown, Prodr. p. 161); 
rachibus semel pluriesve di- v. trichotome ramosis, teretibus ; ramis erecto-patentibus, apice et supra 
basin partitionum pinnas geminatas gerentibus; pinnis glabris, subtus glaucis, lanceolatis v. elon- 
gatis, acuminatis profunde pinnatipartitis; laciniis elongato-oblongis v. linearibus, integerrimis, ob- 
tusis, apice emarginato-incisis, basalibus externis plerumque elongatis v. pinnatifidis.— Filiz cal- 
maria, Rumph. Amb. vol. vi. p. 85. t. 38. Polypodium dichotomum, Thunb. Fl. Jap. p. 338; Forst. 
Prodr. n. 450. Mertensia dichotoma, Willd. Act. Holm. 1804, p. 167; Sw. Syn. Fil. p. 163. Viti 
Levu and Taviuni, (Seemann! n. 791; Harvey!). Also collected in Society Islands (Forster !), in - 
Sandwich Islands (Strickland! Macrae!), Eromanga (M‘Gillivray!), Aneitum (M‘Gillivray !), 
Tahiti (Nelson!), Wallis Island (Sir E. Home!), and Navigators’ Islands (Sir E. Home!). Also 
in the tropics of both hemispheres. 
This is a widely distributed plant, and many of its local varieties have received distinct names. Among 
these must be reckoned Mertensia emarginata, Brack. U. 3. Expl. Exped. Filices, p. 297. t. 42, which is 
chiefly distinguished from the normal form by the rachis and segments being covered beneath with a rusty 
tomentum, and by the segments having a distinct emargination. 
Suzorpo Il. POLYPODIACEJZE, 
Tarsus I. CYATHEZ. 
II. Cyathea, Smith, Mem. Acad. Turin, vol. v. p. 416; R. Brown, Prodr. p. 158. Sporangia 
in receptaculo subgloboso v. clavato, e venze bifurcatione v. medio orta sessilia, soros hemispheericos 
v. subglobosos formantia. Indusia receptaculo substrata, globosa, clausa, apice dehiscentia, ore demum 
exacte truncato v. magis minusve profunde partito.—Filices plerumque arborescentes, frondibus sim- 
plicibus pinnatis v. bipinnatis; nervis furcatis.—Spheropteris, Bernh. Schrad. Journ. vol. ii. 1801, 
p. 122. Disphenia, Presl, Tent. Pter. p. 55. Schizocena, J. Smith, Hook. and Bauer, Gen. Fil. 
t. 2 and 23. : 
In addition to the species described below, the following have been found in tropical Polynesia :—1. 
C. Aneitense, Hook. Syn: Fil. p. 26, from Aneitum (M‘Gillivray! Milne!). 2. C. nigricans, Mett. in Miq. 
Ann. Mus. Bot. Lugd.-Bat. vol. i. p. 56, from Tahiti (Collie!). 3. C. Vieillardii, Mett. Ann. des Se. Nat. 
1861, p. 82, from New Caledonia (Vieillard, n. 1629). 4. O. canaliculata, Brack. U. S. Expl. Exped. 
Filices, p. 282 (vix Willd.), from Tahiti (Brackenridge). 5. C. affinis, Sw. Schrad. Journ. 1800, vol. ii. 
p. 94 (Polypodium affine, Forst. Prodr. n. 455), from Pacific Islands (Forster). 6. C. extensa, Sw. l. c. 
p. 93 (Polypodium extensum, Forst. 1. c. n. 453), from Pacific Islands (Forster). The two last species have 
