'-r 



210 Underwood : The Genus PnAXKRoriiLEBiA 



with broad brownish scales on the lower fourth, naked above : 

 leaf 35-40 cm. long, with 16-20 pinnae which are 10 cm. or more 

 long, 1,5-2.8 cm. wide, unequally obtuse or slightly acute at base, 

 the apex tapering, slightly falcate ; margin prickly, the spines 

 more or less appresscd near the base, more spreading at the apex ; 

 terminal pinnae slightly larger: veins anastomosing, the first 

 branch from each vein bearing a sorus above its middle, eitlier 

 ending as a free included veinlet or rarely uniting with some other 

 vein : sori small, i mm. or less in diameter, in two or three rows, 

 the innermost row 3-5 mm. from the midrib. 



The type of this plant was collected in Orizaba by Bourgeau, 

 2349, aiid appears to extend from southeastern Mexico to Guate- • 



mala. 



IMexico — J era Crnz : Orizaba, Bourgeau, 2349 (K, N, G, C, E), 

 2348 (C); Mohr, Z-j (E) ; MCillcr, 729 (C) ; Witmcr, 99 (P). 

 Xalapa, Coulter, 17 12 (K). Cordoba, Schaffner, 23 (K) ; Kcrber, 

 69 (K). Mlrador, Eiebmann (K, G). 



Guatemala : J. D. Smith, 3259 (K, N, C). 



The Guatemala specimens have narrower pinnae and fewer ot, 

 slightly larger sori. Specimens are also in the Kew Herbarium 

 from Mexico collected by Graham, 404, and from Zhuitlancella, 

 2349. In the Gray collection is a single plant collected in 

 Xalapa by Charles L. Smith, mounted on two sheets, that has a 

 lamina 75 cm. in length and with a stout stipe 65 cm. long. Except 

 for its greatly enlarged size, its relations are with this species. At 

 least without more data we would not care to separate it. It 



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has 36 pinnae, the lowest 18 x 3 cm. with four or more rows of 

 small sori on either side. It is more than probable that Fee's il- 

 lustration of P. jnglandifolia Gen. Eil., //. 22 B. f. i. is taken 

 from this species rather than the one he attempts to illustrate. 



4. PnA.NEROPiii.EBiA .xoHiLis (Schlecht.) Fee, Gen. Fil. 282.//. 22 



B.f.2. 1852. 



Aspidium jiobik Schlecht. Linnaca, 5 : 610. 1830. 



Rootstock stout, creeping, the bases of the stipes with large 

 shining brown scales : stipes 22-30 cm. long, pale brown : leaves 

 40 cm. ^or more long, with 15-23 pinnae which are 12-15 cm. 

 long, 2.3-2.8 cm. wide, with obliquely obtu.se bases and tapering 

 curved apices ; margins spiny, the spines more pronounced in the 

 upper half of the pinna: veins free, about three times forked, the 

 first branch bearing the sorus below the middle : sori small or 



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