* 



208 



Underwood: The Genus PiiAXERoriiLEniA 



Venezuela : Humboldt, 434 (B) ; Miguel, 20 (K) ; Buschcl, (K, 

 E); Funcke, 211 (K) ; Otto, 644 (K) ; Linden, 164 (K) ; 

 Fcndlcr, 233, in part (E, P). 



[Columbia : Andes Bogotcnscs, Triana.l 



Guatemala: Salvia & Godman, 113 (G, K) ; J. DonncU Smith, 

 105 I (K); 76S (K, G, C, P). 



Mexico — CJiiapas : Ghicsbreght, 414 (K, G, P^). 



The typical form of this species from Venezuela is well named 

 juglandifolium^ as the resemblance to walnut leaves is very striking. 

 The Guatemalan specimens of Salvin and Godman are provided 

 with slightly larger pinnae (terminal 20 x 6 cm., lower lateral 20 

 X 5 *^^'^- scarcely falcate) and with more pronounced bristle teeth ; 

 the Mexican specimens have smaller pinnae, 12 x 2.5-3 cm., and 

 also more pronounced bristle teeth. All agree in the basal and 



■ 



apical characters of the pinnae, venation, position of sori, the num- 

 ber of pinnae and the general habit. 



Much is still to be desired regarding the rootstock. The 

 Venezuelan specimens collected by Fendler and distributed under 

 no. 233 are quite different from each other. That of Eaton^s col- 

 lection and the one in Short's herbarium at the Philadelphia Acad- 

 emy are nearly normal, but those of the Kew and Gray herbaria 

 are younger, show more scaly rootstock, longer stipes with quite 

 large dark -brown scales, and with a larger number of sori, the 

 outer rows being more irregular, particularly in the specimen in 

 Herb. Gray. A second species is clearly involved under this- 

 number. 



The species is, however, very sharply circumscribed, its geo- 

 graphical limits are clearly marked, and it is not to be confused 

 with the very distinct species found farther north. 



2. Piianeropitlehia pumila (Mart. & Galeotti) Fee, Gen. Filicum, 



282. 



1852. 



Aspidiuni piiniilum 



t> 



//. //./. 



1844. 



^piditnn Juglandifc 



2:pL 75. f. 5~S. 



Rootstock so far as known short and compact : stipes clustered, 

 5-1 1 cm. long, stramineous or brownish^ densely scaly with nar- 



