562 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
(J. D, Smith, no. 4089 B). Fiscal, alt. 1,110 meters, on trees and lime- 
stone cliffs, Deam 6089, 6229. Volcan de Atitlin, Depart. Sololé, Kel- 
lerman 5887. Without locality, Heyde 212. 
Costa Rica: Verbena, near Alajuelita, alt. 1,000 meters, Tonduz 8794. 
Forests of Tsaki, Talamanca, alt. 200 meters, Jondug 9474. Near Rio 
de las Vueltas, Tucurrique, alt. 635 meters, Tonduz 12758. San 
Jerénimo, alt. 1,500 meters, Wereklé (Jiménez, no, 582). Juan Vifias, 
Reventazén Valley, alt. 1,000 meters, Cook & Doyle 298, 341. Rio Tur- 
rialba, alt. 500 meters, J. D. Smith 6913. Turrialba, alt. 200 meters, 
Pitticr 4088; Cook & Doyle 380. Tablazo, alt. 1,750 meters, Brade. 
Boruca, alt. 460 meters, Tonduz 4612. Near Santiago (east of Cartago), 
alt. 1,050 meters, Mazvon 95. Vicinity of Cartago, alt. about 1,500 
meters, Maron 48; Alfaro (J.D. Smith, no. 6954). Navarro, alt. 1,050 
meters, J. D. Smith 5098. Atirro, alt. 600 meters, J. D. Smith 5099. 
Jiménez, alt. 200 meters, Alfaro 155. Near San José, Beyer 14; Pittier 
318; Cook & Doyle 12. Cerro de San Isidro, near San Ramon, alt, 
1,300 meters, Brénes 14220, 14127. Without locality, Wercklé ; Cooper. 
PaNnaMA: Near El Boquete, Chiriquf, alt. 1,200 meters, Mazon 4960. 
2. Polypodium cryptocarpon Fée, Mém. Foug. 8: 88. 1857. 
Polypodium skinnert Hook. Sp. Fil. 4: 214. 1862. 
Polypodium bernouillii Baker in Hook. & Baker, Syn. Fil. ed. 2. 510, 1874. 
TYPE LocALITY: Cérdoba, Mexico (Schaffner 194). 
DistriputTion: Southern Mexico and Guatemala, at 300 to 1,550 meters 
altitude. 
ILLUSTRATIONS : Hook, op. cit. pl. 276. B (as P. skinneri). 
Fée’s description of P. eryptocarpon, though incomplete, clearly applies to 
the species described and figured subsequently as P. skinneri and known usuall y 
under the latter name. Fournier listed P. cryptocarpon as a variety of P. fur- 
furaceum and cited several collections, three of which (Schaffner; Bourgeau 
1440; Muller) are represented in the Underwood Fern Herbarium. These agree 
not only among themselves but also with specimens collected by Fink at the 
type locality and with ample Guatemalan material, the whole representing a 
species remarkably distinct in venation and easily recognizable also by the 
lesser scaly covering of the under surface of the lamina. 
Hooker’s description of this species (as P. skinneri) is excellent, save in the 
one particular that “both sides” of the lamina are not “ copiously clothed ” 
with scales, the scales of the upper surface being relatively few and scattered 
even in young fronds. The veins are invariably free and very oblique (diverg- 
ing from the midvein at an angle of 30 to 35 degrees), characters which, with 
the conspicuously long-paleaceous rhizome, should have sufficed to distinguish 
this species from the Costa Rican plants erroneously listed under this name 
by Dr. Christ in 1901. These Costa Rican specimens actually pertain to 
P. myriolepis Christ, deseribed in 1896. Further notes upon their misidentifica- 
tion will be found under P. myriolepis? Christ finally maintains*® that a single 
specimen of P. skinneri (P. cryptocarpon) has been collected in Costa Rica by 
Wercklé, but this must be regarded as very doubtful. 
Baker, though the type specimens of P. skinneri were available to him at Kew, 
strangely enough redescribed this species as P. bernouillii, as is evident not 
only from his diagnosis but also from specimens of the type collection (Ber- 
nouilli 442) which are at hand. 
*TIn Pittier, Prim. Fl. Costar, 3:17. 
? Page 581. 
* Bull. Soc. Bot. Genéve 1: 220. 1909, 
