Pacific Ferns, I — Brownlie 
243 
narrower in the Horne material and the recep- 
tacle is markedly extruded. Copeland has thus 
confused two quite distinct Fijian species under 
the name Hymenophyllum macgillivrayi. A com- 
parison of the Horne material with species from 
surrounding areas shows that it is almost iden- 
tical with H. pseudotunhridgense from Queens- 
land, and consequently this name should be 
given to the form illustrated by Copeland as H, 
macgillivrayi. 
Specimens examined ( all at Kew ) : Queens- 
land, Bailey unnumbered; Fiji, Horne 983 in 
part, 1076, and unnumbered; A. C. Smith 5713. 
Hymenophyllum denticulatum Sw. 
Hymenophyllum denticulatum Sw. Schrad. 
Journ. 1800/2, 10, 1801. 
This species is quite distinct from all other 
small Fijian members of the genus in the posses- 
sion of a conspicuous wing along the whole 
rachis. 
NEW CALEDONIA 
Hymenophyllum subdimidiatum Ros. 
Hymenophyllum subdimidiatum Ros. Meded. 
Rijks-Herb. Leiden no. 11, 1, 1912. 
Hymenophyllum viride Ros. Copel. Philipp. 
J. Sci. 64, 59, 1937. 
In his treatment of this species Copeland 
quotes Rosenstock’s description and mentions 
the type material as Schlechter 14799, which he 
states he has not seen, but in the same paper 
he publishes the new species H. viride from 
material with the same collection number. The 
plate illustrating this species shows it to be the 
same as Rosenstock’s original description and 
the same as a cotype (Schlechter 14799) at 
Kew. 
It is doubtful whether or not this species is 
distinct from H. pseudotunhridgense , for, al- 
though no markedly extruded receptacles were 
noted, the involucre shape is the same and the 
general appearance of the plant is very similar. 
However, until a greater amout of comparative 
material is available it is perhaps better to re- 
tain the species. 
Material examined: Schlechter 14799 (Kew); 
Balansa 2701 (Kew, B.M.). 
Hymenophyllum dimidiatum Mett. 
Hymenophyllum dimidiatum Mett. Kuhn. 
Linn. 35, 393, 1868. 
This species is somewhat larger than the 
preceding one and is distinct in the possession 
of a serrated involucre. An examination of the 
type material shows this fern is not glabrous, 
as appeared in the original description, but has 
hairs on the stipe and rachis. In fact, no glabrous 
species was noted among the groups discussed 
in this paper. 
Specimens examined: Deplanche in Herb. 
Lenormand (Caen); Vieillard 2258 (Kew, 
B.M.). 
Hymenophyllum piliferum C. Chr. 
Hymenophyllum piliferum C. Chr. Vjschr. 
Naturf. Ges. Zurich 70, 221, 1925. 
Christensen separated this from H. dimid- 
iatum on the basis of the hairs on stipe and 
rachis but, as noted above, the type material of 
that species is not glabrous. However, it is felt 
that it should be retained as a valid species on 
the grounds of its more open growth form and 
much smaller size. It is similar to H. subdi- 
midiatum in form and size but has the serrated 
involucre of H. dimidiatum . Copeland included 
specimens assigned to this by Christensen in his 
examples of H. dimidiatum and ignored Chris- 
tensen’s species completely. 
Specimens examined: Franc 1450 in Herb. C. 
Christensen (B.M.); Rosenstock 133 (B.M.). 
Hymenophyllum pumilio Ros. 
Hymenophyllum pumilio Ros. Fedde Repert 
9, 72, 1910. 
This is a very reduced species somewhat sim- 
ilar to H. minimum of New Zealand, but lack- 
ing the spines found on the sides of the sorus 
in that species. It cannot be confused with any 
other New Caledonian fern. 
SAMOA 
Hymenophyllum praetervisum Christ. 
Hymenophyllum praetervisum Christ. Engl. 
Jahrb. 23, 338, 1896. 
This is the only small species in this section 
