Ferns of Pitcairn Island — Brownlie 
299 
Cyclosorus parasiticus (L.) Farwell 
Dryopteris parasitica (L.) Kze. Brown, B.P. 
Bishop Mus. Bull. 89, 22, 1931. 
Dryopteris dentata (Forst.) C. Chr. Cope- 
land, Occ. Pap. B.P. Bishop Mus. 14(5): 
56, 1938. 
Common everywhere in shady positions. The 
habit of these specimens is almost intermediate 
between typical C. parasiticus and C. nymphalis, 
but since the leaves are not fascicled it is better 
to place it in the former species. I feel that 
Brown’s recognition of a local variety based 
chiefly on characters of size is, however, un- 
sound. Widely distributed from tropical Asia 
through the Pacific. 
Lintott 156 (C), Williams 3049, 3076 (W), 
Twyford S.P. 100 (S). 
Athyrium polyanthes (Sol. ex Bak.) Copel. 
Diplazium polyanthos (Sol.) C. Chr. Brown, 
B.P. Bishop Mus. Bull, 89, 55, 1931. 
Athyrium pitcairnense Copel., Occ. Pap. B.P. 
Bishop Mus. 14(5): 60, 1938. 
Diplazium harpeodes Moore. C. Chr., B.P. 
Bishop Mus. Bull. 177, 76, 1943. 
Not common; found in isolated clumps in 
shady valleys. Much of the confusion concern- 
ing the nomenclature of this species was cleared 
up by Christensen (1943), but I prefer to fol- 
low Copeland in uniting Diplazium and Athyr- 
ium. Copeland’s local species falls within the 
range of the species as outlined by Christensen. 
Distribution is throughout the Pacific islands 
from Fiji to Pitcairn. 
Lintott 166 (C), Cuming 1389 (K) , Mat- 
thews unnumbered (K). 
BLECHNACEAE 
Doodia media R. Br. 
Fairly common on open ground and under- 
neath Pandanus. Distributed from Australia and 
New Zealand to Pitcairn, but absent from Sa- 
moa and Tahiti. 
Lintott 159a and 159b (C), Williams 3044 
(W), Twyford S.P. 133, 134 (S), St. John 
14976 (K). 
ASPLENIACEAE 
Asplenium nidus L. 
Common in one or two valleys and cultivated 
in local gardens. Widely spread throughout the 
tropics of the Old World. 
Lintott 153 (C). 
Asplenium ohtusatum Forst. 
On rocks on the south coast, and in small 
caves. Always within or close to the spray zone. 
The specimens are similar to those found on 
Rapa, the Australs, and other Pacific islands, 
but are somewhat smaller than the typical state 
represented in New Zealand. Elsewhere the spe- 
cies is found in Juan Fernandez and southern 
Chile, with closely related, if not identical, spe- 
cies on Tristan da Cunha and Tasmania. 
Lintott 170 (C), Williams 3083 (W), Twy- 
ford S.P. 71, 73 (S), Fosberg 11343 (K). 
Loxoscaphe gibberosum (Forst.) Moore 
LoxosCaphe gibberosum var. pitcairnense 
Brown, B.P. Bishop Mus. Bull. 89, 67, 
1931. 
Common everywhere in deep shade. This spe- 
cies shows so much variation in the degree to 
which the leaf segments extend beyond the 
sorus that I feel that Brown’s varieties are dif- 
ficult to maintain. It is found in the Pacific re- 
gion from Fiji to Pitcairn, but is absent from 
Samoa. 
Lintott 157 (C), Williams 3012, 3053 (W), 
Twyford S.P. 43 (S), Matthews unnumbered 
(K), Cuming 1373 (K), Fosberg 11297 (K). 
POLYPODIACEAE 
Pyrrosia angustata (Sw.) Ching 
Cyclophorus angustatus (Sw.) Desv. Brown, 
B. P. Bishop Mus. Bull. 89, 93, 1931. 
Common on rocks in inland situations, and 
as an epiphyte on large trees. The species is 
