PHILIPPINE SPECIES OF ATHYRIUM. 
295 
Luzon, Cuming 170 ; Rizal, Merrill 2667, Bur. Sci. 056 Ramos; Mount Maqui- 
ling, Loher: Negros, Mount Canlaon, Copeland 2071 ; Horn of Negros, Elmer 9058: 
Bohol, Cuming 81)9 in part: Mindanao, San Ramon, Copeland 1716, Williams 
2293. 
This is distinguished from Athyrium maximum (Don) Copel. ( Asplenium 
maximum Don, Prod. FI. Nepal. (1825) 8), by the aculeate stipe and more or less 
aculeate raehis. Diplazium Smithianum is described by both Baker and Beddome 
as having anastomosing veins. Some of the specimens cited above are assumed 
to have spiny stipes. 
2.3. Athyrium vestitum (Presl) Milde. 
Samar, Cuming 336. 
Recognizable by its short broad pinnules as well as by the pubescent rachises. 
24. Athyrium davaoense Copel. comb. nova. Diplazium davaoense Copel. in 
Philip. Journ. Sci. 1 (1906) Suppl. 151. 
Mount Apo, Copeland s. n. 
25. Athyrium esculentum (Retz.) Copel. comb. nova. Eemionitis esculenta 
Retz. Obs. Bot. 6 (1791) 38. 
Luzon, Cuming 35; Benguet, Topping 166, 210, For. Bur. 5071 Curran; Nueva 
Ecija, Merrill 280; Pampanga, Topping 7/78; Manila, Zamora 3; Lamao River, 
Merrill 251/2, 2552, Williams 139, Elmer 6682; Rizal Province, Bur. Sci. 87 Fox- 
worthy, Bur. Sci. 1797 Ramos; Los Banos, Elmer 8052; Tayabas, Gregory 60: 
Mindoro, For. Bur. 11010, 11022 Merritt: Negros, Elmer 10115: Mindanao, Lanao, 
Clemens 106 (a very narrow form) ; San Ramon, Copeland 1690; Davao, Cope- 
land 601/, Williams 2821. 
India to Polynesia. 
GROUP OF A. UMBROSUM. 
26. Athyrium meyenianum (Presl) Milde. Diplazium, Presl Epim. 88. Di- 
plazium caudatum J. Sm. Asplenium deltoideum Hooker, Sp. Fil. 3:255, non 
Presl q. v. infra. D. melanopodium Fee Mem. 8:85. A. cyathecefolium Moore, non 
supra. 
Luzon, Cuming 29, 159, 288 in part; Rizal Province, Bur. Sci. 1090, 1/582 Ra- 
mos; Mount Maquiling, Matthew s. n.: Mindoro, McGregor 11/1: Negros, Elmer 
9626, 10010: Mindanao, Lanao, Clemens 111; Zamboanga district, Copeland 731/, 
1573, Merrill 51/63; Davao, Copeland 966 (?). Bolster 129, from Cagayan Prov- 
ince, Luzon, is an immature plant, which is this species or a new one near it. 
While I am convinced that this fern is not D. deltoideum I am by no means 
so confident that it is D. meyenianum ; if not, it should be known by Fee’s ap- 
propriate name. The description of D. meyenianum contains nothing which does 
not fit this fern unless it be the texture, but it is very incomplete. The plant 
I have is a most distinct one, characterized by thin texture, conspicuous, sparse 
sori usually as near the margin as to the midrib, lowest veinlets in most speci- 
mens sterile, but in occasional specimens all fertile and the lowest sori then 
usually diplazioid, the bases of the rachises of the pinnae usually black, and the 
base of the stipe bearing copious acicular black paleae, unlike those of any other 
species. The pinnules are strikingly suggestive of the pinnae of A. sorsogonense. 
The eaudex is more or less erect. 
Although very distinct from any other Athyrium, this species is within itself 
very variable, and may ultimately prove to include several. 
