/ 



212 Uxdkrwood: The Gf.xus Phanerophleiiia 



There is nothing- in the extensive collection at Kew, which num- 

 bers 43 specimens in tliis group, to match this species. Its re- 

 lations are closest to P. nobilis and P. ■rcmotispora ; froni the former 

 it differs among other points in its remote sorl ; from the latter in 

 its free veins ; from both in its larger number of pinnae, its scaly 

 rachis and its very characteristic indusium. 



We have seen specimens of the distribution in the Kew, Gray, 

 Columbia, National, Eaton, Davenport and Philadelphia Academy 

 herbaria, besides our own specimens, and they show very little ten- 

 dency to x'ary. 



6. Phanerophlebia auriculata sp. nov. 



Rootstock short, creeping, densely covered with the bases of 

 the persistent stipes, pale greenish, stramineous, lo-iS cm. long 

 with abundant dark brown lanceolate scales which become nar- 

 rower above and almost hair-like : pinnae 10-16, rarely exccedincr 

 this number, forming a leaf 15-30 cm. long, the terminal practi''- 

 cally the same size as the others, 5-7 cm. long, 2-2.5 cm. wide • 

 lateral pinnae unequal at base, the lower angle obliquely truncate' 

 the upper usually developed into a well-marked auricle ; margins 

 strongly serrate, sometimes more deeply incised, the teeth endinrr 

 m sharp prfckles projecting from the margin at an angle of 30^'' 

 40^ ; texture thin ; veins free, 1-3-forked : sori in 2 more or less 

 clearly marked rows with scattering sori between them and beyond 

 the outer row. 



This is the plant that has too long masqueraded as the rcpre- 



spidiuin jiiglaudifi 



es 



texture. 



Although not the first collected, we shall assume 



Tringle, no. 831, from "cool damp cliffs, Mapula Mountains, 

 Chihuahua, October, 1886," as the type of the species since it is 

 more widely represented in collections and more representative. 

 The first collected plants of this species we have seen are in Kew 

 labeled simply Mexico, Dr. Coulter, 1713, and though possessing 

 a greater number of pinnae (20) than the type are clearly this ■ 

 species. The first collection within the limits of the United States 

 was made in Western Texas on the Mexican Boundary Survey 

 near " Hueco Tanks and Van Horn's Wells." The only speci- 

 men from this collection is in the Columbia Herbarium and is 

 marked ^^//V///;/^y;/^r/,,;^,/^,;//;,;;^Kze., D. C. Katon, January 1880." 



