172 CHRIST. 
61. Pteris biaurita Linn. Sp. PI. (1753) 1070. 
Luzox, Province of Bongnet, Mount Tonglon {Loher) ; Buguias (1895 Copcland) 
October, 1905; Manila [Vsteri) Pocember, 1002. Palawan, (594 Foxworthy) 
April, 1900. 
and distinct. 
62. Pteris Blumeana Agardh Pterid. 22. 
,1 
A subspecies resembling tbe typical form, but Ibe nerves forming a costal , _ 
areola wbicli is sometimes narrow and dilTicult to find, sometimes ratber large ^ 
r 
Stipite rliaeliique, saepe etiam costis, rufo.straiiiineis, caritancis aut 
atratis verrucis minutis asperis, ^ogmcntis linearibiis basi plus minus 
liberis^ nunnerosis^ pcctmato-conferti-s nervis liberis subtus tenuibus minus 
manifestis^ textura coriacea rigida, colore obscure viridi saepe glaucino. * 
Mindanao, Lake Lanao, Camp Keitbley (255 Mrs. Clemens) February, 1906: 
District of Davao, Mount Dagatpan {Warburg) ; Santa Cruz (254 DeVore tC- 
Hoover) April, 1903: Province of Zamboanga, San Ramon (1596, 1599 Copcland) 
January, 1905. Luzon, Province of Benguct, Sablan (6213 Elmer) April, 1904. 
A subspecies with coriaceous texture, linear segments slightly or not at all 
united at the base, free veins which are very slender and scarcely visible above, ^ 
its color dark and often somewhat glaucous, the stipe and rachis dark, reddish 
or blackish and somewhat verrucose. It is a ^Malayan form that 1 have also 
from Java, Tjibodas, leg. Racihorski, 1897; Perak, leg. Ridley No. 9543; Khasia, 
leg. Austen, det. Clarke "Var. Khasiana/' and Yabim, near Limbang, German New 
Guinea, leg. H. Zahn, 1905. I believe it to be identical with Pteris Blumea'na 
Agardh, as described by Hooker '** aijd by Racihorski."' 
Var. asperula J. Sm. in Hook. Journ. Bot. 3 (1841) 405, et Hook. Sp. Fil. 
3: 181, t. 135 A; var. setigera Hook. 1. c. 
Costis setulis albis 1.5 mm. longis superne regularitcr ciliatis. I 
Basilan (93 DeVore d Hoover) April, 1903. Mindanao, Province of Zain- 
r 
boanga, San Ramon (1651 Copeland) February, 1905. 
63. Pteris Whitfordi n. subsp. {P. Whitfordi Copel. in Philip. Journ. Sci. 
1 (1906) Suppl. 255, pro specie). 
A typo differt colore atroviridi, textura coriacea^ segmcntis angulo 
acuto erecto-patentibus usqug_ad costam separatism sinu fere nullo, stipite 
valido, paleis brunneis 0.5 cm. longis lanceolatis basi vestito, planta 
magna 60 ad 70 cm. alta, nervis manifestis. 
Negbos, Gimagan River (1660 Whitford) . 
64. Pteris parviloba subsp.; Christ in Bull. Sci. Fr. et Belg. 28 (1898) 
264. t. 12. 
Statura gracili, stipite tenui, rufostramineo, scaberulo, fronde late 
deltoideOj pinnis inilmis auctis et valde deflexis, segmentis confertis 
lineari-oblongis, brevibus, basi plerumque liberis, nervis tenuibus subtus 
"Sp. FiL 3: 180. 
"Pterid. Buitenzorg 156. 
* ' 
