THE FLORA OF MOUNT PULOG. 321 
PTERIS Linn. 
1. P. cretica Linn. Mant. (1767) 130. 
In the mossy forest, altitude above 2,300 m, C. M. Z. 16300. 
Very widely distributed in the Philippines; widely distributed in the tropical 
and subtemperate parts of the world. 
2. P. quadriaurita Retz. Obs. 6 (1791) 38. 
In the pine region, altitude about 1,600 m, C. M. Z. 16304, Merrill 6358, and 
in the mossy forest, Merrill 6371, McGregor 8817, two forms being represented, 
that from the pine region simply pinnate, that from the mossy forest somewhat 
bipinnate. 
HISTIOPTERIS J. Sm. 
1. H. incisa (Thunb.) J. Sm. Hist. Fil. (1875) 295. 
In the mossy forest above an altitude of 2,300 m, C. M. Z. 16312. 
Widely distributed in the Philippines at medium and higher altitudes; tropical 
and subtropical regions of the world. 
PTERIDIUM Gledit. 
1. P. aquilinum (Linn.) Kuhn Deck. Reisen 3° (1879) Bot. 11. 
Very abundant and widely distributed in the pine region, altitude from 1,400 
to 2,000 m, ©. M. Z. 16314, Merrill 6357, McGregor 8818. 
Widely distributed in the Philippines, more frequently at medium altitudes, 
sometimes at sea level; tropical and temperate regions of the world. 
PAESIA St. Hil. 
1. P. luzonica Christ in Philip. Journ. Sci. 3 (1908) 275. 
In the upper limits of the mossy forest, altitude about 2,700 m, C, M. Z. 16318. 
Known only from the higher mountains of northern and central Luzon; allied 
to P. rugulosa Kuhn of New Caledonia and Tahiti. 
PLEUROGRAMME Presl. 
1. P. loheriana Christ in Bull. Herb. Boiss. II 6 (1906) 1006. 
In the mossy forest above an altitude of 2,300 m, McGregor 8851, 
Widely distributed on the higher mountains of the Philippines; endemic. 
HYMENOLEPIS Kaulf. 
1. H. platyrhynchos (J. Sm.) Kze. Farnkr. 1 (1842) 101. 
Abundant in the mossy forest above an altitude of 2,300 m, C. M. Z. 16290, 
Merrill 6387. 
Widely distributed on the higher mountains of the Philippines; Celebes, Borneo. 
2. H. spicata (L. f.) Presl Epim. (1851) 159. 
Very abundant, and with the same habitat and range in the Philippines as the 
preceding, C. M. Z. 16291, 16292, Merrill 6355, McGregor 8819, 8845. 
Tropical Asia to Madagascar, Malaya, and Polynesia. 
POLYPODIUM Linn. 
1. P. albidosquamatum Bl. Enum. (1828) 132. § Pleopeltis. 
In ravines, pine region, altitude about 2,000 m, C. M. Z. 16286. 
Widely distributed in the Philippines at higher altitudes; throughout Malaya. 
2. P. argutum Wall. Cat. (1828) no. 308; Hook. Sp. 5 (1863) 32. § 
Goniophlebium. 
Abundant in the mossy forest above an altitude of 2,300 m, C. M. Z. 16288, 
Merrill 6369, Copeland. 
