179 . 231 



4 — 5-jugate, the lowermost pair anastomosing. In size, colour and venation it re- 

 sembles very much I), asplenioides, which, however, is indusiate and pinnate to 

 short of the apex with most of the pinnæ stalked; in our variety long simple hairs 

 are few or none on rachis and costæ beneath, which are stellato-puberulous, in 

 I), asplenioides long hairs as a rule are more numerous than the stellate ones. 



Haïti: Port au Prince, Picarda nr. 386 (C). 734 (B) — prope Mariani, Picarda nr. 377 (B) — San Do- 

 mingo, ad Rio Mameges, Eggers nr. 2656 (B, C) — v, Tuerckheim nr. 2576 (B;. 

 Porto Bico: Sintenis nr. 5661 (B, C, CC); Goll nr. 1016 (W). 



228. Dryopteris pyramidata (Fée) Maxon, Contr. U. S. Nat. Herb. 10: 489. 1908. 



Syn. Goniopteris pyramidata Fée, 11 mém. 61. tab. 16 fig 2. 1866. 



Dryopteris latiusciila Maxon. Contr. U.S. Nat. Herb. 10; 498. 1908. 



Nephrodium subcnneatum Bak. Flor. bras. 1^; 487. 1870; Syn. Fil. 503. 

 Jenman, W. Ind. and Guiana Ferns 234. 1908 ! 



Dryopteris subciineata O. Ktze. Rev. 2: 813. 1891; C. Chr. Ind. 295. 



"Nephrodium subovatum Jenman. "Argosy", Demerara". (t. Jenman). 

 Type from Guadeloupe, leg. L'Herminier (Herb. Cosson, Paris! and authen- 

 tical specimens in B and C). 



A most distinct and uniform species, excellently described by Jenman and 

 Maxon (loc. cit.). It resembles in size, colour and texture D. tetragona, from which 

 it can be distinguished at once by the lamina being gradually narrowed upwards 

 and by its venation. From the allied species without terminal pinnæ it differs by 

 its most pinnæ being distinctly stalked. The lamina is glabrous, the rachis and 

 costæ beneath excepted, which are puberulous by very minute forked or simple hairs. 

 Lower pinnæ narrowed towards the base, generally not reflexed or abbreviated, 

 upper ones with a truncate base, all scarcely incised one third to the costa. Lobes 

 scarcely longer than broad, truncate and often emarginate at the apex. Veins 8 — 10- 

 jugate the lower 3—4 much curved, connivent to sinus, or the lower pair occa- 

 sionally united and sending a branch to the sinus; often the anterior basal vein 

 ends in the leaf-tissue, not reaching the opposite posterior one. Sori medial, fur- 

 nished with a small, ciliate indusium; head of sporangium glabrous, but its pedicel 

 bears normally a stiff hair. — Rhizome obliquely erect or decumbent; stipe 40 — 60 

 cm long, lamina 35 cm x 20 cm; pinnæ 12 x 2'/2 cm. Rachis is sometimes gemmi- 

 ferous in the upper part. 



D. latiuscula Maxon is exactly typical and N. subcnneatum Bak. is the same. 

 The specimen from S. Domingo referred by Maxon to this species and to which the 

 combination Dryopteris pyramidata first was applied, is not so typical, still scarcely 

 different. It has the rachis and costæ beneath clothed with numerous long, whitish 

 hairs, and its pinnæ are incised about halfway to the costa. — D. pyramidata seems 

 to be a rather common species in Guiana and the southern West-Indian islands. I 

 have examined the following specimens : 



30* 



