*.# 



MAXON 



STUDIES OF TROPICAL AMKRTCAX FEHNS, 



503 



7 to S mm. broad near tlio base, obtusely ciuieate. stalked (2 to o mm.), loug- 

 attemiato, in drying folded along tlie midrib. 



Type in the U. S- National Herbarium, no. 474000, collected at Juan Vifias, 

 valley of the Reventazon, Coista Rica, altitude 1,000 meters, by O, F, Cook 

 and C, B. Doyle (no, 208), April 22, lfR)3, T.ess perfect specimens are those 

 collected by Werckle and by Cooi>er, both without exact locality iu Costa Rica. 



Known also from Guatemala upon a specimen collected by von Tiirckheini at Pan- 

 samala, Alta Yerapaz, altitude 1,200 meters, February, 1887 {J. D. S. 1129), in 



the herbarium of Capt. John Donnell Smith. 



The present si)ecies is probably niuist closely allied to the true S. sorhifolia ^ 



whi(*h appears to be strictly a West Indian spe<:Mes, It differs in its darker 



almost reddish chaff, in having the frond not reduced below or only very 



slightly so, in the longer and rehitively narrower pinnae, these tapering and 



long attenuate from near the middle and not from the outer third as in >^. 



sorhifoUa. 



«As delimited by Professor Underwood, Bull. Torr. Club 33: 591-C05. 1907. 



