200 ('.ilKlST. 



of ii siilliciciitly (lisliiict. spccics, hiit oftcii tlic liiiiii mihI sliort |)iim;c arc frmiid oii 

 tlu! sanu! plant. Tlic froiui is oftcn tcniiinatcd by a sin<;lc siniplc |)iiiiia, Imt sonie- 

 tinu's it is pinnatifid. Tlie pinna- aro slij^iitiy petioled, soniewliat iiastate and 

 slif^litly cordate at tlie base, sli<>litiy lohed toward tlie base, but nearly always 

 witli soine strongly elongatcd and unequal lobes toward tlie apex wliicli is 

 ahruptly truncate. Tlie stipe is ahvays slender and ficxuous, about 8 cin. long, 

 tlie frond about 10 cni. long, the lateral pinna' 5 to 7 on cacli side, 4 cni. long, 

 2.5 cm. wide, tlie terminal one 5 to 10 cni. long. Tlie sori are sniall, very 

 irregular, sometimes few, sometimes very numerous often occupying oiily tlie 

 terniinal part of tlie frond. 



Var. acrostichoides (J. iSm.) Ncphrodium aerosticlioidcs J. 8m. in Tlook. 

 Journ. Bot. 3 (1841) 411; Christ Ann. Jard. Bot. Buitcnz. 15' (1898) 130. 



The sterile frond is more or less that of D. divcrsiloha, but the fcrtile frond 

 is very long stipitate and tlie pinnie are strongly reduced in width, approacliing 

 those of Gymnoptcris and Eycnolfia. Two subvarieties are distinguisliable : 



Subvar. rhombea, n. suljvar. 



Frondis fortilis stipito debili floxiioso valde elongato, lamina 7 cin. 

 longa, pinnis 5 utrinqiie, apice frondis elongato lobato acuminato, pinnis 

 rhomboideo-lanceolatis usqne ad linoaribus, subpotiolatis, l^asi truncatis, 

 obtusis, cronulatis, 8-4 mm. latis, soris confortis aut seriatis aut omnio 

 confluentibus, aroola una. 



Sterile pinnae with the form of tliose of D. divcrsiloha, the frond with the 

 stipe 12 cm. long, the fertile frond, including the stipe 25 cm. long, tlie stip? 

 being about 18 cm. long. 



LuzoN, without locality (14!) Cuming) ; Province of Rizal, Bosoboso (1084 

 Ramos) July, 1900: Province of Bataan, Mount Mariveles (3130 Mcrrill) Oc- 

 tober, 1903; (Copcland) August, 1904; (0153 Lcihcry) July, 1904: Province of 

 Tayabas (Infanta) (784 Whitford) September, 1904. Mindanao, District of 

 Davao (503 Copcland) March, 1904. 



Philippines and Celebes. 



Subvar. lanceola n. subvar. 



Ditfert a praecedente piimis sterilibus lanceobitis margino fere integris 

 apice obtusis aut acutiusctdis, apice frondis valde elongato fere caudato. 

 areola ima huic inde dual)us. 



LuzoN, Province of Bataan, Mount Mariveles (250 Copcland) January, 1904: 

 Proviiice of Rizal (140 Foxivorlhy) Janiuiry, 190(). Negros, Gimagaan River 

 (1600 Whitford) May, 1900. Minuanao, Province of Zamboanga {Copcland) 

 1905. 



A specimen from San Kamon {(^opcland) Aj^ril, 1905, olfcrs tlie maximum 

 reduction, tlie fertile pinna^ being reduced to a width of 2 nnu., and the sori 

 accordingly having the appearance of a string of beads as is tlie case in spccimens 

 froin Celebes leg. Sarasin. 



20. Dryopteris acromanes n. sp. 



Rhizomato brevi crasso radicoso, foliis fasciculatis, stipite rufo-aut 

 plumbeo-stramineo, tenui, 15 ad 30 cni. longo, fere nudo, frondo oblongo- 

 acuminata, 17 cm. longa, !) cm. lata, i^innata, pinnis ca. 7 utrinque 

 infra apicemo longatum lobatum, petiolulatis, basi hita truncata sod 



