376 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 52 



different from the common D. panamensis, although some of the 

 smaller leaves very much resemble D. opposita. 



DRYOPTERIS PANAMENSIS (Presl) C. Chr. 



(Revision 292, No. 28, Fig. 19.) 



Under this name I unite a wide range of forms. Presl's type of 

 the species, collected in Panama by Haenke is, according to the orig- 

 inal specimens in herb. Presl proper, a long and narrow form (leaf 

 7 to 8 dm. long by 5 to 8 cm. broad) ; the pinnae are scarcely 4 cm. 

 long by 0.5 cm. broad, from a hastate base gradually tapering toward 

 the acuminate apex; segments oblong, oblique, acute, with revolute 

 edges. In my "Revision" I have referred this form to D. opposita, 

 which it resembles in habit; still the segments are longer and nar- 

 rower and the reduced pinna not auriculiform, as in true D. oppo- 

 sita. To this form belong the following specimens : 



Costa Rica : Rio Turrialba, Prov. Cartago, 1,600 ft., /. Donncll Smith 

 5087. Dans la foret a Terraba, 260 meters, Pittier 3538. El General, 

 Pittier ic 



The form illustrated by fig. 19 in my "Revision" is the most de- 

 veloped of the species, and is very common in Central America. I 

 have examined the following additional specimens: 



Costa Rica : Vicinity of Cartago, rocky border of stream, Maxon 32. 

 Vicinity of the River Tirivi, near San Jose, 1,100 meters, on banks of 

 shaded river, Maxon 132. San Jose, 1,160 meters, P. Biolley. Pied- 

 ades pres San Ramon, 1,000 to 1,100 meters, Brenes 142^6. San Jose, 

 Pittier 1067. Surubres pres San Mateo, 200 meters, Pittier 4063. 

 Cartago, /. /. Cooper (Donnell Smith 6027). Rio Reventazon, Prov. 

 Cartago, 2,000 ft., Donnell Smith 5088. 



Salvador: Prope San Salvador, L. V. Velasco {Donnell Smith 8890). 

 Vicinity of Izalco, 400 to 600 meters, Pittier 1943. 



Guatemala : Moran, Depart. Amatitlan, 1,205 meters, Kellerman 4874. 

 Escuintla, 1,100 ft., Donnell Smith 2453, 2738. Pantaleon, Depart. 

 Escuintla, 1,370 ft., W. C. Shannon {Donnell Smith 174). Without 

 locality, Heyde 703, 729. 



Mexico : Witliont locality, E. Kerher 440. 



Cuba: Valley of the Rio Bayamita, south slope of Sierra Maestra, among 

 rocks in bed of river, Maxon 3964. El Guama, Prov. Pinar del Rio, 

 in the bed of a mountain stream, among rocks, Palmer and Riley 158. 



Jamaica: Maxon 828, 832, 855, looi (= Underwood 2136), 1002 (= Und. 

 2137), 1107 (=Und. 2227), 1737 (=Und. 2695), 1743 (=Und. 2703), 

 1744 (=Und. 2704), 1745 (=Und. 2705), 1746 {=Und. 2706), I757 

 (=Und. 2721), 2789; Harris 7377. 



In Mexico the species is represented by two forms, of which the 

 first differs from the common large form only in its rather small 



