NEW BOUNKAN FERNS. 347 
L 
Histiopteris stipulacea (Hooker) Copel. (Ptcris stipulacca 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. E. incisa is turgid enough, 
witliout 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 Acrosorufi, 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.) 
Eliizomate scandente^ vix 2 mm crassOj caesio-glauco^ paleis setiform- 
ibiis squarrosis rubido-badiis vel badiis sparse et brevissime ciliatis 
basibus 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, 
rhachi supra sulcata; segmentis infimis vix diminutis, maximis 22 mm 
longis, 3 mm latis, rectis, obtusis, levissime serratis; venulis anastomo- 
"santibus seriem unam areolarum includentibus, alitor liberis apicibus 
signatis, venulis liberis inclusis nullis; soris panus, uniseriatis ad venulas 
anastomosantes sed baud in alas venularum. 
Sarawak, Mount Poe, leg. J. Hewitt. 
Polypodium (Goniophlebium) proavitum Copel. spec. nova. 
Eliizomate repente, 3 mm crasso, caesio-glauco, paleis setiformibus 
squarrosis nigris basibus dilatatis peltatis vestito; stipitibus articulatis, 
atro-castaneis, glabris, 10-15 cm altis; fronde ca. 50 cm alta, 8-11 cm 
lata, valdc acuminata, ad alam angustissimam pinnatifida, glabra, rhachi 
nigra supra sulcata; segmentis infimis ad alas rcductis, maximis 6 cm 
longis, rectis vel falcatis, acutis, ca. 4 cm latis, 1 cm distantibus, margi- 
nibus plantae siccae revolutis, basibus dilatatis connexis, integris, coria- 
ceis: venulis seriem unam areolarum venulis liberis carcntium, raiius 
alteram interruptam efficiontibus; soro extra areolam quamque costalem 
uno, parvo; sporangiis globosis. 
Sarawak, Bongo Mountain, leg. Hrooks d Hewitt. 
Neither this nor the preceding species fits in any one of the usually recognized 
subgenera of Polypodium. Both have the characteristic rhizome and scales of 
