PHILIPPINE SPECIES OF DRYOPTERIS. 
195 
boanga, (1575, 1575a, 1575b Copeland) 1905; District of Davao (390 Copeland) 
March, 1904; Santa Cruz (218 DeVore <£ Hoover ) April, 1903; Mount Apo (378 
DeVore d Hoover) May, 1903. 
Malayan region to the Seychelles. 
It is impossible for me to follow Christensen’s Index in treating this species 
as Zk unita and renewing the confusion that has exsisted for a long time regarding 
Nephrodium unitum R. Br. ( = Dryopteris gongylodes) . Blume’s name is here 
accepted for the species. There is a limit even to the virtues of priority ! 
Var. mucronata (J. Sm.) Nephrodium mucronatmn J. Sm. in Hook. Journ. 
Bot. 3 (1841) 412. 
Inter typum et N. callosum (Bl.) intermedia. N. cucullato typico 
major, pinnis 2 cm. et nltra latis, nervis ntrinqne plus minus 12, quorum 
6 junctis, soris minutis submarginalibus, pinnis infimis versus basin 
angustatis, insertione pinnarum callosa, omnio puberula. N. callosum 
magnitudine et glabritie differt. 
Luzon, without locality (182 Cuming nee 268). Mindanao, Lake Lanao, 
Camp Keithley (107 Mrs. Clemens) January, 1906. 
10. Dryopteris arida (Don) O. Ktze. Rev. Gen. PI. 2 (1891) 812. Aspidium 
aridum Don Prodr. FI. Nepal. (1825) 4. 
Luzon, Province of Nueva Ecija, Carranglang (283 Merrill) May, 1902: 
Province of Benguet, Trinidad (212 Topping) January, 1903. Mindoro, Baeo 
(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) January, 1906. 
No. 279 Cuming “Nephrodium mucronatum J. Sm.” appears to differ from this 
species in its pinnae being more 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) O. 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 Algeria. 
12. Dryopteris hispidula (Dene.) O. Ktze. Rev. Gen. PI. 2 (1891) 813. 
Aspidium hispidulum Dene. Nouv Ann. Mus. 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. Niewenhuis lecta exacte convenit, sed 
minus cum speciminibus aliter collectis. 
A specimen from Baguio, Province of Benguet, Luzon (5108 Curran) August, 
1906, appears to me to be intermediate between Dryopteris basilaris and D. 
hispidula. 
Borneo and the Philippines; its other distribution in Malaya uncertain. 
