164 



above. • * • Segments 10 to 18 on each side, erecto-patent, * lan- 



ceolate, acuminate, entire, 'unicostatae et pulokerrime reticulata^,' the lower 

 gradually smaller. Stipe 2 to .'5 feet high, straight, as thick as the quill of 

 ■ goose or of a. swan, " * * greenish. Sori * * * scattered or subseriate 

 in a sort of double vow on eaeh side of the midvein • • *. Easily distin- 

 guished from P. pkymatodea L. by the membranous texture and the entirely 

 snperfieial sori.' The accompanying Plate 69 shows the lower pinna' the size 



of the succeeding, the rhizome bearing many acute scales, and the sori H to 2 mm 



in diameter. 



Raciborski, in I'tvr'ulophyten der Flora run Btlitenssorg, p. 113, describes it as 

 having "Rhizome " " • black, 6 mm. or less thick, clothed with round entire 

 appressed scales 1 to 1A mm. in diameter. Stipe 5 to 40 cm. high, 4 mm. or 

 less thick, smooth. Lamina thin, pellucid, naked. 2(1 to :{() cm. broad. M) to 80 cm. 

 long, deeply pinnatifid. * * '" Segments linear. • • " 1.5 to 2 cm. broad. 

 Up to 16 cm. long. " " In each areola, one round sorus. 1.5 to 2 mm. 



broad, superficial or sunken." 



If the statements of Hluine and Raciborski. where they conflict, be construed 

 as both being correct, and covering the plant's range of variation, they still 

 include only plants much less stout in many respccls than that from Mount Apo. 

 The size of the palea and of the sori ami the linn texture arc most conspicuous 

 characteristics of the latter. 



Mcttenius, Polypodium No. 221. redescribed /'. a/fine with Cuming's No. 07, 

 from Luzon, as his material. This is identical with my No. 1582, from San 

 Ramon. Its venation is comparatively obscure, but in pattern the same as thai 

 described by the .lavan writers. It can be included in all respects by a combina- 

 tion of the descriptions by Rhone and Raciborski. having a green, naked rhizome, 

 stipe usually less than 1 foot high, and sori about 2 nun. in diameter, sometimes 

 somewhat immersed, 1 can not distinguish it in any way from P. commutatum, 

 which is probably a synonym. 



Polypodium (Phymatodes) proteus Copeland n. sp. 



Rhizomate ad ton-am repente, paleie ."5 nun. longie ferrugineis subu- 

 latis brevissime ciliatie basibue peltatie ovatia vol interdum hastatie 

 vestito; stipitibus 6—170 nun. altis, glaberrimis; frondibue polymor- 

 ])his, glabris, coriaceis, marginibu8 angustia cartilagineia ; nunc simpli- 

 cibua, IntegriB, 6-50 mm. altis, oblongie vol laneeolatis, utrinque obtuaia, 

 soris inter venae primarias solitariis ; rariua trifidia; Baepiue pinnatia, 

 usque ad 20 cm. altis, fere eadem latitudine; pinnia 1-4 jugatia, lancoo- 

 latis, acutie vol acuminatis nee usquam caudatis, integris vol undulatis, 

 sossilibus. interdum adnatis vol infimis brevi-stipitatis, ad rhachin ar- 

 ticulatis; vonis priinariis conspicuis, marginem vix attingentilms. vonulis 

 immerais; aoris ant inter venae primarias solitariis coatae proximia, aui 

 8— 3-8eriatis interdum confluentibus, leviter immersis. (Tab. 25.) 



Luzon, Benguet, inter Suyoc et Pauai, 1.800 m. s. m., Copeland 1 04 1 bis. 



In spite of its extreme variability and local abundance. 1 can identify this 

 plant with no known Phymatodes or Selliguca ." nor has it appeared hitherto in 

 our rich collection of Benguet ferns. It grows on dry, rocky ground, the exposed 

 plants being small and frequently simple, those sheltered by crevices larger, and 

 finally pinnate. The articulation of the pinna* is an interesting adaptation to 

 the arid habitat. 



