4 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 66 



The type specimen of this species (Herb. Stockhohn) was col- 

 lected in Jamaica by Swartz and consists of sterile leaves only. 

 Other specimens studied are : 



Jamaica : Hollymount, Mount Diabolo, alt. 750 meters, Maxon 

 2284, 2284a, 2284b. Near Troy, alt. 600 — 660 meters, 

 Ma.von 2822; Underzvood 2862, 2934. (All in U. S. Nat. 

 Herb.) 

 Cuba : Ramon de la Sagra. (Herb. Berol.) 

 While the Cuban specimens are fully identical with subdimorphous 

 ones from Jamaica, a plant from Guatemala is somewhat different. 

 Still the differences are rather small and the plant must be regarded 

 provisionally as a variety of this species : 



MAXONIA APIIFOLIA DUALIS (Donn. Sm.) C. Chr., comb. nov. 



Nephrodium duale Donn. Smith, Rot. Gaz. 15: 29. pi. 4. 1890. 



This differs from the typical Jamaican plant in its very thick 

 (4 cm.) rhizome, which is very densely covered with glossy, silky, 

 rufous scales that are quite entire, while in the Jamaican plant the 

 rhizome scales are finely toothed, especially toward their threadlike 

 apex. The continental plant is, as a whole, of larger growth, and the 

 fertile leaf is greatly contracted, with very large, distinctly reniform, 

 pale brown indusia. 



Guatemala: Pansamala, Dept. Alta Verapaz, von Tiirckheim; 

 distributed by John Donnell Smith as no. 1408. (The type 

 specimens, U. S. Nat. Herb. nos. 831030, 83 103 1.) 



Copenhagen, April 10, 1916. 



