A NEW FERN, GONIOPHLEBIUM PRINGLEI, FROM 



.AIEXICO. 



B}^ William K. Maxox. 



Aid in Criiptof/amic Botaui/, l>ii'mon of I'lanU. 



The writer has had much pleasure iu dedicating the following excel- 

 lent species to its discoverer, Mr. C. G. PHngle, whose collections 

 of Mexican plants have so long been widely and favorably known. 



Goniophlebium pringlei sp. nov. riate XLVIII. 



Rhizome creeping, verv firm, liexuose, slender, about i nmi. thick, 

 densely clothed svith appressed dirty-white lanceolate acuminate 

 brownish-centered chaff, and with rather sparse very dark brown lanose 

 rootlets: frond glabrous throughout, about 5 dm. long: stipe 1 dm. 

 long, stramineous, firm, terete, polished, very slender (only 1 mm. 

 thick): lamina ovate, 4 dm. long, about 2 dm. broad below the middle, 

 thin membranaceo-chartaceous, very translucent, comprising 11 pairs 

 of subopposite entire narrowh' lanceolate tapering acute-pointed 

 pinna^ which decrease gradually above, giving rise to a terminal cau- 

 date division nearly ec{ual in size to the largest pinna'; lowermost 

 pinna? 9 cm. long by 2.3 cm. broad. sul)cordate and free below, fully 

 adnate and dilated above into a foliai' wing .5 nun. deep from sinus to 

 rachis and connecting with the second pair of pinia' which with the 

 third pair are the longest (about 10 cm.): succeeding pinna' gradually 

 shorter, similarly dilated both above and below to form a continuous 

 slightly broadening soriferous wing, the sinuses obtuse, rounded: 

 venation manifest; sori, orbicular, large, about l.'i })airs to the pinna, 

 nearer the midril) than the margin; each sorus t)orne on tlie single 

 included veinlet of the broad initial areole which extends half the 

 distance to the margin; ultimate venation irregularly anastomose, very 

 rarely with an included veinlet. 



Type, No. KKlTO-l, in the United States National lleil)ariuin: on 

 trees, near Jalapa, State of Vera Cruz, Mexico, altitude 1,2()<> meters, 

 C. G. Pringle, no. 11855, November 3(\ 1S><>3. Known oidy from (he 

 type collection containing about 25 specimens taken for distrihution. 



Proceedings U. S. National Museum, Vol. XXVII— No. 1379. 

 Proc. N. M. vol. xxvii— 03 65 



