384 Broadhurst: Struthiopteris in North America 



except a few specimens from Guatemala there is very little from 

 the region between Costa Rica and Mexico. Seven of the above 

 twenty-five species have Costa Rica or Panama as type locality ; 

 for none of these, however, have we a sufficient number of speci- 

 mens to be sure that our descriptions indicate the variation that 

 might reasonably be expected. Much that we have is worth little 

 because of its fragmentary condition; several of the specimens 

 given under Inquirendae are from this region. 



The collections recently made by J. A. Shafer indicate that 

 Cuba offers similar rewards and difficulties. 



Inquirendae* 



i. One sheet from Costa Rica, Pittier 1921, "Forets du Barba, 

 versant Pacifique," 2,500-2,700 m., 1890 (N), with broad elliptical 

 pinnae a little like S. rufa in shape, but differing in size, coloring, 

 and in the serrate margin with definitely marked vein apices. 

 A young specimen, U. S. National Museum no. 834094 (" Volcan 

 de Poas, Alfaro, San Jose," Costa Rica, altitude 2,300 m., 1902), 

 may belong with this. 



2. One sheet from Costa Rica collected by J. J. Cooper, U. S. 

 National Museum no. 154303, November 1886; the slender, fertile 

 pinnae are 25-28 cm. long, and the sori are continued on the 

 dilated, non-petioled, decurrent bases of the pinnae. No petioled 

 species has such fertile fronds. 



3. One sheet from Costa Rica collected by Werckle 1901-1905; 

 (the specimen is an unnumbered one from Christ's herbarium and 

 bears the name Lomaria procera, below which is written Lysr.). 

 The fibrillose midribs and rachis separate it from S. costaricensis, 

 S. lineata, and S. striata, to which it is nearest. The fertile leaf 

 is lacking, though I strongly suspect it is the one mounted with 

 the sterile frond on the U. S. National Museum sheet no. 575235. 



4. One sheet (part of a sterile leaf) from Costa Rica, collected 

 by Werckle, U. S. National Museum no. 575240, is wrongly 

 labeled B. Werckleana; it differs from the description and Christ's 

 other specimens in texture, color, proportion, the margin, the bases 

 of the pinnae, and in size. A pinna was sent to Christ, but he 



* This section includes only the unplaced material not already discussed in 

 connection with the various species. 



