XI, ©, 1 Copeland: New Species Borneo Ferns 47 
Sarawak, Mount Trekan, altitude 600 meters, Hose 730, 1894-95. 
Distinguished from otherwise similar species by the broad, flat wing of 
the rachis, The blackish margin is occasionally found in other species and 
may not be a constant character. 
HYMENOPHYLLUM PERFISSUM sp. nov. 
Leptocionium lamina plana, involucro fere ad basin fisso labiis 
integris; rhizomate filiforme, fusco-nigro, ramoso, nudo; stipite 
10 ad 15 mm alto, glabro, filiforme; fronde ca. 4 cm alta, 10 ad 15 
mm lata, glabra, pinnata, rhachi sursum anguste alata ala integra, 
deorsum vix marginata; pinnis majoribus subpinnatifidis seg- 
mentis 3 ad 5, minoribus furcatis, minimis simplicibus, segmentis 
ca. 4mm longis, vix 1.5 mm latis, obtusis, serratis dentibus paucis 
subspiniformibus, fuscis vel fusco-olivaceis; soris segmenta ab- 
breviata prima acroscopica pinnarum subapicalium occupantibus, 
receptaculo fusiforme incluso, involucro 3 ad basin fisso, labiis 
obovato-orbicularibus, integris, nudis, 1.5 mm longis. 
Mount Kinabalu, altitude 3,700 meters, on tree trunks, Mrs. Clemens 
10588. 
Apparently a quite distinct little plant. 
PTERIS Linnaeus 
PTERIS CLEMENSIAE sp. nov. 
Species gregis P. quadriauritae sensu latiss., pinnis infimis 
non furcatis; stipitibus 30 ad 50 em altis, fuscis, ad basin paleis 
castaneis vestitis, alibi sub lente minute punctulatis; fronde ca. 
45 cm alta, 40 cm lata, pinnata, parte apicale 25 cm longa; pinnis 
2- vel 3-paribus, infimis paullo maximis, petiolulis ca. 1 cm longis, 
lanceolatis, ca. 25 cm longis, 7.5 cm latis, in caudam angustissi- 
mam fere 4 cm longam terminantibus, ad alam 0.2 ad 0.4 mm 
latam pectinatis; costa inferne straminea prominente, superne 
angustissime bialata, alis ad insertionem costulae quaeque in spi- 
nulam excurrentibus; segmentis usque ad 4 cm longis, 5 ad 6 
mm latis, supra mediam 2 ad 3 mm distantibus, obtusis vel minute 
et obscure mucronulatis, venis utroque latere usque ad 24 prope 
costulam furcatis et 6 simplicibus; indusio griseo, 0.6 mm lato, 
fere ad sinum et apicem attingente. 
Mount Kinabalu, near Lobang, Mrs. Clemens 10348 (type), Topping 1602. 
PTERIS TOPPINGI! sp. nov. 
Stipite 40 cm alto, glabro, stramineo-viride ; fronde 30 cm alta, 
parte apicale 20 cm alta, 7 cm lata; pinnis utroque latere 2 vel 
3, infimis brevipedicellatis (petiolulis 2 mm longis), sequentibus 
sessilibus, infimis ca. 20 cm longis, in segmenta 3 ad 4 cm longa, 
8 mm lata terminantibus, ad alam fere 1 mm latam pinnatifidis; 
