188 



136 



referred it. From D. serra it differs besides by size by the characteristic base of the 

 lower piniiaî, tlie lower basiscop segments being fully obsolete. The species is 



distributed over the the whole tropical America, but 

 the specimens from different regions do not agree ex- 

 actly with the West-Indian type. I can distinguish the 

 following forms: 



Fig. 25. D. oligophylla Ma.xoii. 



Basal portion of a lower pinna, 



X "Is. 



1. typica. The common Jamaican form is marked 

 by its very characteristic reddish lamina when dried 

 and by its flesh-coloured indusia, it is often quite 

 glabrous and glossy on the upperside, some specimens 

 are very finely pubescent on the costæ and veins be- 

 neath ; indusia glabrous or minutely pubescent. — With 

 this form agree most specimens seen from other islands, still some of them, espe- 

 cially those from Porto Rico, are scarcely different from the continental form. 



St. Thomas: Eggehs nr. 455<1 (B, C) — St. Kitts, Bhitton and Cowell nr. 488 (W). 



Porto Rico: Undekwood and Ghiggs nr. 75 (W); Sintems nr. 411 (C, S, W), 2068 iB, W), 2636 (B, W), 



4593 (C, W) — Haiti, Picarda nr. 1030 (C). 

 Jamaica: Maxon nr. 1003 (W); O. Hansen (Hi; Wilson nr. 682 (B); Hart nr. 201 (W); G. L. Fisher 



nr. 983 (R); Underwood nr. 3249, 3301 (Wi. 

 Cuba: Wright nr. 1003 (S), 3922 (S). Valley of Rio Bayamita, Maxon nr. 3920 (W) — Piuar del Rio, 



Mts. near Jaco Jaco, Baker nr. 3804 (W). 



2. var. pallescens C. Chr. n. var. 



Syn. Aspidium giganteum Moritz msc. non Bl. 



The continental form, differing from the type by the grey-green, coriaceous 

 lamina and the pale or yellowish, more distinctly hairy indusia; rachis and ribs 

 beneath more distinctly hairy and the costæ beneath furnished with some small, 

 ciliate, brown scales. It grows larger than the West-Indian form. Some of the 

 smaller forms are scarcely to distinguish from /). angescens var. piiberula. 



Mexico: Angangueo, v. Chrismar (B). 



Costa Rica: Navarro, Wehcklé (C); La Lima, Wercklé (C, CC) — Rio Corozal, Golfo Dulce, Tonduz 

 nr. 9978 = Donn. Smith nr. 7214 (C, W) - Canas Gardas, Pittier nr. 10964 (C. WJ — 

 Atirro, Donn. Smith nr. 6900 (W) — Santo Domingo de Golfo Dulce, Tonduz nr. 10023 

 (= Donn. Smith nr. 7215) (C, W) — Rio Tuirialba, Donn. Smith nr. 6901 (W) — Meseta 

 Central de San José, 2000 m, Alfaro nr 16902 (C, RB) — Veragua, Warsewicz iir. 47 (B), 



Panama: Maxon nr. 4993, 5763 (W). 



Colombia: Santa Marta, H. H. Smith nr. 2454 (C, Rgl — Ibaqué, Stübel nr. 13 (B) — Tnlinui, 

 Schmidtchen (B). 



Venezuela: Moritz nr. 424 (B, C, H), 412 (B). 



Ecuador: Balao, Eggers nr. 14660 (W); El Recreo, Egoers nr. 15037 (Wj. 



;5. var. lutescens C. Chr. n. var. 



Smaller than the preceding variety, as a rule yellowish green; lower pinnæ 

 less reduced towards the base. 



