PTEUIDOPHYTA HALCONENSES. 139 
Polypodium tenuisectum Bl. 
On ridges in the mossy forest 2,200 to 2,500 ni. alt. (No. 5978). 
Already knovm from the Philippines, from Mount Apo, Mindanao, and Mount 
Canlaon, Ncgros. 
Malay to Samoa. 
Polypodium Yoderi Copel. 
With the preceding (N"o. 5077). Hitherto known only from the typo collec- 
tion from Mount Madiaa-s, Panay. 
Polypodium papillosum Bl. 
^ On boulders in forests at 800 m. alt. (No. 5079) j very large specimens. 
Malaya. 
Polypodium (Goniophlebium) integriore Copol. n. sp. 
Khizomatc lignoso repcntc 3-4 mm. r-rasso, paleis castanco-fulvis Ian- 
ceolato-acumiiiatis 4 mm. longis vestito vel glabrescente et non ealoareo; 
stipite glabro 15-25 cm. alto, stramineo-brunneo ; fronde ca. 50 cm. alta; 
})iniiis linearibns^ 20 cm. longis, 15 mm. ]atis, sub apice valdc caiulata 
vix serrulatis alitor integris vel creniilatis, glabris, membraneceis, basibns 
t anguste aciiminatis, omnibus stipitatis; venis nigris, seriebus areolarum 
ca. 3 1 soris grandibus, leviter immersis. 
Ad montem Halcon, epiphyticuni 2.200 ni. s. m. (No. GUDo). 
Nearly related to P. persicifoJiuni Desv., which as at present constnied 
seems to me to include two or more species. P. integriore can be recognized 
by its narrow, almost entire piuna.', stalked, and with narrow bases. P. pcrsi- 
cifolium occurs on Mount Apo ^ which is its most northern known habitat. 
The Apo form is much larger than the Javan, and membranaceous. 
► 
Polypodium (Goniophlebium) verrucosum Walk, has previously been col- 
I lected on the Baeo Kiver, near the base of Mount Halcon by McGregor (No. 
253). It differs from the preceding most conspicuously in its small and 
^ deeply immersed sori which resemble those of P. papillosum Bl. 
Polypodium (Goniophlebium) subauriculatum Bl. 
^ Epiphytic on mossy trees at 1,400 m. alt. (No. G004). 
These specimens are remarkable for the A'ery coarsely serrate, strongly 
acuminate pinnae, and for the very tardy and incotnpTetely deciduous dense 
clothing of scales on the rachis. In the latter respect our Philippine plants 
usually differ from the Javan. This species is in urgent need of analysis. 
Polypodium nummularium Mett. 
K Epiphytic on mossy trees at 1,800 m. alt. (Nos. 3994, 5995). 
Hitherto known only from Luzon, on the mountains about Laguna de Bay. 
^ Some specimens with fronds fertile towards the, apex, but with broad sterile 
bases suggest P. acctdcnSi and unmistakably approach P. Whilfurdi Copel., of 
Mount Mariveles. This resemblance is strong enough thoroughly to establish 
the affinity of P. nummularium and P, Whitfordi. In Luzon both species are, 
as far as known, very stable and distinct in form. Regarding these species as, 
like our fern flora as a whole, migrants towards the north, Halcon may be 
regarded as the point of origin and separation; they being so distinct in Luzon 
that their close affinity escaped suspicion is to be ascribed to their (however 
recent) isolation there. 
"Copeland: This Journal (1906) Suppl. 1: 162. 
