PHILIPPIXE SPECIES OF DRYOPTERIS. 195 



boanga, (1575, 1575a, 1575b Copeland) 1905; District of Davao (390 Copeland) 

 Marcli, 1904; Santa Criiz (218 DeVore d Hoover) April, 1903; Mount Apo (378 

 DeVore tC- Hoaver) May, 1903. 



Malayan region to the Sej^clielles. 



It is impossible for nie to follow Christensen's Index in treating tliis species 

 as D. uiiila and renewing tlie confusion that lias exsisted for a long tiine regarding 

 yephrodiiim niritum R. Br. ( = Dri/opteris gongylodes) . Blume's name is liere 

 accepted for the species. There is a limit even to the virtues of priority ! 



Var. mucronata (J. Sm.) Nephrodium mucronatum .1. Sni. in Hook. Journ. 

 Bot. 3 (1841) 412. 



Inter typuni et N. caUosvm (Bl.) intenneclia. i\'. cucidlato typico 

 major, pinnis 2 cm. et nltra latis, nervis utrinqne plus minus 12, quorum 

 6 junctis, soris minutis submarginalibus, pinnis infimis versus basin 

 angustatis, insertione pinnarum callosa, omnio puberula. K. calJosum 

 magnitudine et glabritie differt. 



LuzoN, without locality (182 Cuming nec 2G8). Mindanao. Lake Lanao, 

 Camp Keitldcy (107 Mrs. Clemens) January, 1900. 



10. Dryopteris arida (Don) O. Ktze. Rev. Gen. Pl. 2 (1891) 812. Aspidium 

 aridum Don Prodr. Fl. Xepal. (1825) 4. 



Luzox, Province of Nueva Ecija, Carranglang (283 Merrill) May, 1902: 

 Province of Benguet, Trinidad (212 Topping) .January, 1903. Mindoro, Baco 

 (879 Merrill) April, 1903. Mindanao, District of Davao, Davao (447,326 

 Copeland) March, 1904: Province of Zamboanga (1576 Copeland) 1905: Lake 

 Lanao, Camp Keithley (Mrs. Clemens) Januaiy, 1906. 



No. 279 Cuming "Nephrodium mucronatum J. Sm." appears to differ from this 

 species in its pinnse being niore strongly hastate at the base and in being more 

 strongly villous. Dryopteris arida of the Philippines is usually more strongly 

 villous and the pinnae are shorter and more distant than in the form found in 

 India (Dehra Dun, leg. Blanford) . 



Malaya. 



11. Dryopteris gongyloides (Schkuhr) 0. Ktze. Rev. Gen. PI. 2 (1891) 812. 

 Aspidium Schkuhr Krypt. 289. Nephrodium unitum R. Br. 



LuzoN, without locality (259 Cuming) ''Nephrodium unitum R. Br." J. Sm. 

 in Hook. .Journ. Bot. 3 (1841) 411: Province of Cagayan (133bis Bolster) July, 

 1905: Province of Nueva Ecija, Carranglang (283 Merrill) May, 1902: Province 

 of Bataan, Mount Mariveles (1239 Borden) .June, 1904. Mindanao, Province of 

 Zamboanga, San Ramon (Copeland) March, 1905. 



Tropics of both hemispheres, as far north as Algefia. 



12. Dryopteris hispidula (Dcne.) 0. Ktze. Rev. Gen. PI. 2 (1891) 813. 

 Aspidium hispidulum Dcne. Nouv Ann. ]\Ivis. 3: 346. 



LuzoN, without locality (268 Cuming nec 182), "Nephrodium mucronatum 

 J. Sm." in Hook. Journ. Bot. 3 (1841) 412. 



Cum planta Borneensi a cl. Nietvenhuis lecta exacte convenit, sed 

 minus cum speciminibus aliter collectis. 



A specinien from Baguio, Province of Benguet, LrzoN (5108 Curran) August, 

 1906, appears to me to be intermediate between Drijopteris hasiJaris and D. 

 hispidtila. 



Borneo and the Philippines; its other distribution in Malaya imcertain. 



