NEW BORNEAN FERNS. 
347 
Histiopteris stipulacea (Hooker) Copel. ( Pteris stipulacea Hooker, Sp. Fil. 
2: 233.) 
Sarawak, summit of Mount Matang, leg. J. Hewitt. 
This species is not even mentioned in the Synopsis Filicum of Hooker and 
Baker, but is referred by Christensen to H. incisa. H. incisa is turgid enough, 
without our trying to make it hold this fern. Mr. Hewitt’s specimen fits Hooker’s 
description in every detail except that the pinnules are sessile and sometimes 
extravagantly hastate. 
Loxogramme iridifolia (Christ) Copel. 
A specimen collected by Mr. Hewitt on limestone hills of Upper Sarawak is 
exactly this species except that the sterile fronds have rounded apices, and a 
note says that in older plants these are longer and acute or acuminate. The 
species is already known from Celebes and Mindanao. 
I anticipate that when the Bornean fern flora is at all completely known, it 
will cease to appear, as it does at present, that the fern flora of the Philippines 
is more nearly related to that of Celebes than to that of Borneo. This Loxo- 
gramme is one piece of temporarily valid evidence. Another is the distribution 
of the genus Acrosorus ; but Polypodium triangulare Scort. ex Bedd. in Journ. of 
Bot. 25 (1887) 324, plate 278, fig. I. is without doubt an Acrosorus, to be 
known as A. triangularis. It was collected in Perak, but the genus may now be 
looked for confidently in Borneo. 
Polypodium (Goniophlebium) coloratum Copel. spec. nova. (Plate VI.) 
Rliizomate scanclente, vix 2 mm erasso, caesio-giauco, paleis setiform- 
ibus squarrosis rubido-badiis vel badiis sparse et brevissime ciliatis 
basibns dilatatis peltatis dense vestito; stipitibus remotis, articulatis, 
latericiis, nitidis, glabris, rectis, 10 cm altis; fronde 10 cm alta, 4 cm 
lata, acuminata, ad alam angustissimam pinnatifida, glabra, subcoriacea, 
rhaelii supra sulcata; segmentis infimis vix diminutis, maximis 22 mm 
longis, 3 mm latis, rectis, obtusis, levissime serratis; venulis anastomo- 
santibus seriem unam areolanim includentibus, aliter liberis apicibus 
signatis, venulis liberis inclusis nullis; soris parvis, uniseriatis ad venulas 
anastomosantes sed hand in alas venularum. 
Sarawak, Mount Poe, leg. J. Hewitt. 
Polypodium (Goniophlebium) proavitum Copel. spec. nova. 
Rliizomate repente, 3 mm erasso, caesio-giauco, paleis setiformibus 
squarrosis nigris basibns dilatatis peltatis vestito; stipitibus articulatis. 
atro-castaneis, glabris, 10-15 cm altis; fronde ca. 50 cm alta, 8-11 cm 
lata, valde acuminata, ad alam angustissimam pinnatifida, glabra, rhachi 
nigra supra sulcata; segmentis infimis ad alas reductis, maximis 6 cm 
longis, rectis vel falcatis, aeutis, ca. 4 cm latis, 1 cm distantibus, rnargi- 
nibus plantae siccae revolutis, basibus dilatatis connexis, integris, coria- 
ceis : venulis seriem unam areolarum venulis liberis carentium, rarius 
alteram interruptam efficientibus ; soro extra areolam quamque costalem 
uno, parvo; sporangiis globosis. 
Sarawak, Bongo Mountain, leg. Brooks <£- Hewitt. 
Neither this nor the preceding species fits in any one of the usually recognized 
subgenera of Poly podium. Both have the characteristic rhizome and scales of 
