144 
COPELAND. 
Hymenophyllum fimbriatum J. Sm. 
On trees at 1,800 m. alt. (No. 6081), different from E. australe Willd., in form, 
texture, and position of the sori; nearer to E. dilatatum. 
Luzon ( Cuming 218). 
H. sp. near E. polyanthos Sw. 
On trees in forests at 900 m. alt. (No. 0080), a remarkably lax plant with few 
pinnules. 
H. sp. near H. polyanthos Sw. 
On mossy trees in forests at 1,400 m. alt. (No. 6082), a large plant with long- 
segments, very peculiar in the symmetry , of the pinna; ; on mossy trunks at 900 
m. alt. (No. 6083). 
Hymenophyllum demissum Sw. 
On mossy trees at 1,400 m. alt. (No. 6086) . 
Malaya to Polynesia and New Zealand. 
Hymenophyllum halconense Copel. n. sp. 
Rhizomate fili forme repente primo hirsuto, demum glabro ; stipitibus 
filiformibus, 2-3 cm. altis, glabrescentibus, sursum laminis decurrentibus 
anguste alatis; lamina 4—9 cm. alta, 15-20 mm. lata, bipinnatifida et 
segmentis 11 interdum furcatis, margine integra, haud ciliata, costa ubique 
alata; costa venisqne basibusque nrceolarum infra rnfo-pnbescentibus, 
supra glabris; urceolis ad segmenta 11 infima, acroscopica apicalibus, ses- 
silibns, vix ad mediam in lobos rotundatos fissis ; receptaculis exsertis. 
Ad arbores muscosos, 1,050 m. s. m. (No. 6084) . 
Related to H. serrulatum (Presl) C. Chr., rather than to E. ciliatum; differing 
from the former in being a smaller fern in all respects, and in its entire margins. 
Very small specimens were also collected at 900 m. alt. (No. 6085), which 
I believe to be this species, especially as they are in large part sterile. Can this 
small form be E. tenellum Kuhn? 
Hymenophyllum obtusum H. & A. 
On mossy trees at 1,400 m. alt. (No. 6087). 
This agrees exactly with my Hawaiian specimens (leg. Eillebrand ) in pubes- 
cence and in the characteristic color, but usually has nothing like the truncate 
fronds of that plant, so that on the whole it is intermediate between E. obtusum 
and E. ciliatum. 
We have identical specimens from Benguet, Luzon ( Elmer 6021) det. Christ. 
Hawaii, New Guinea. 
Hymenophyllum tunbridgense (L.) Sm. 
On mossy trees at 1,100 and 2,000 m. alt. (Nos. 6088, 6089) ; not typical, but 
hardly separable from this species. 
England to New Zealand and Chile. 
Hymenophyllum aculeatum (J. Sm.) Racib. 
On trees in forests at 180 m. alt. (No. 6059). Some specimens can hardly be 
distinguished from E. denticulatum Sw. 
Luzon. 
Ceylon and Malaya. 
