119 



4. DISCHIDIOPSIS Schlechter. 



i. D. philippinensis Schlechter in Perk. Frag. Fl. Philip. (1904) 128. 

 (3809 Merrill) April, 1904. In thickets below 60 m. Endemic. 



5. HOY A R. Br. 



1. H. cumingiana Decne. I. c. 636. 



(311 Whit ford) May. An epiphyte in forests at 700 m. Endemic. 

 This species is abundant in the region of Pinus insularis, northern Luzon, 

 where it is always found on bowlders, outcropping*, and cliffs. 



2. H. luzonica Schlechter 1. c. 130. 



(2565 Men-ill) June. In thickets along the river at 150 m. Endemic. 



3. H. multiflora Blume; Hook. f. 1. c. 52. 



(129 Barnes) January; (2330 Borden) December; (1047, 1258 Whitford) 

 January, May; (2204 Meyer) December. Epiphytic, 75 to 150 m. Malayan 

 Peninsula and Archipelago. 



6. MARSDENIA R. Br. 



1. M. philippinensis Schlechter 1. c. 133. 



(3315 Merrill) October: (0147 Leiherg) July. In thickets below 100 m. 

 Endemic. 



In addition to the above Aselepiadacea>, 9 other distinct species from the 

 Lamao region are represented in our herbarium, but as duplicates of these are 

 in the hands of Dr. R. Schlechter for identification, no attempt has here been made 

 to determine them. 



TUBIFLOR^l. 

 CONVOLVULACE^E. 



1. RIVE A Choisy. 



1. R. barnesii Merr. Govt. Lab. Publ. 17 (1904) 40. 

 (68 Barnes) November. In thickets at 30 m. Endemic. 



2. R. luzonensis Hallier f. Bull. Herb. Boiss. 6 (1898) 715. 



(00, 351 Barnes) October, March; (2253, 2417 Meyer) December, January; 

 (2048, 2391 Borden) October. January; ( 1035 Whitford) January; (3120 Merrill) 

 October. In thickets along the stream 25 to 500 m. Endemic. 



2. QUAMOCLIT Toumef. 



1. Q. vulgaris Choisy: DC. Prod.. 9 (1845) 336. 



(3097 Merrill) October. In thickets below 100 m., introduced from tropical 

 America, now spontaneous and widely distributed in the Philippines. 



3. IPOMCEA Linn. 



1. I. batatas (Linn.) Lam.: Clarke in Hook. f. Fl. Brit. Ind. 4 (1883) 202. 

 Occasionally cultivated about Lamao. generally cultivated in tropical and 



subtropical regions. Sp.-Fil., Camote. 



2. I. blancoi Choisy 1. c. 389. 



(1606 Borden) August. In thickets below 100 m., widely distributed in the 

 Philippines. 



3. I. obscura (Linn.) Ker; Clarke 1. c. 207. 



(3099 Merrill) October. In thickets below 100 m., widely distributed in the 

 Philippines. Tropical Asia, Africa, and Malaya. 



4. I. paniculata (Linn.) R. Br. /. digitata Linn.; Clarke 1. c. 202. 



