248 196 



about ^k of the way down to the costa: texture herbaceous, colour dark-green or 

 grey-green. Segments numerous, oblique, obtuse or subacute. Veins 10 — 11-jugate, 

 the basal ones connivent to sinus. Sori inframedial or submedial, furnished with 

 a persistent, stellalo-pilose indusium. Sporangia glabrous. 



This species is closelj' allied to I), higubris, from which it differs mainly by 

 the absence of ^scales on rachis and costæ beneath and by fewer veins. Klotzsch's 

 original specimen is apparently a small leaf of a species, which is known by 

 pteridologists under other names. Best agreeing with the type are some plants from 



Trinidad, heights of Aripo, Bot. Gard. Herb. nr. 325, 326, 327 (W). 



The common West-Indian form of the species is probably quite typical; it 

 differs from the original specimen by its large size; lamina 1 m or more long with 

 25 or more pairs of pinnæ, which are 20 — 25 cm long, 2 cm broad ; costæ above 

 densely stellato-pubescent but without long, simple hairs; sori medial; basal pair 

 of veins often united, which especially is to be found in the Jamaican and Cuban 

 specimens, but in the same pinna one may find the basal veins free, connivent 

 and anastomosing. This form is 



f. guadalupensis (Fée). 



Syn. Nephrodium guadalupense Fée 11 mem. 89 tab. 24 fig. 3. 1866. 

 Uryopteris guadalupensis O. Ktze.; C. Chr. 269. 



Trinidad: Bot. Gard. Herb. nr. 4118 (C). 



St. Vincent: H. H. & G. W. Smith nr. 1348 (C). 



Guadeloupe: L'Herminier nr. 34 et 132 (B^; Père Duss nr. 4040 (B, C, W), 4032 (RB), 4453 (B, W). 



Martinique: Père Duss nr. 4750 (W). 



Porto Rico: Balbis (B). 



Jamaica: Brigliton near Hope Bay, Alex. Moore (Wj; Jenman (W); Hart nr. 303 (W). 



Cuba: Monte Verde nr. 1009 (B, S), 1010 pt. (B). 



var. BioUeyi (Christ). 



Syn. Aspidium BioUeyi Christ, Prim. Fl. Coslaric. 3: 31. 1901. 



Asjudiunt guadalupense Christ, Bull. Soc. hot. Belg. 35: 210. 1896. 

 JJryopteris guadalupensis Christ, Bull. Boiss. II. 7: 264. 1907 (with full 



description). 

 Drgopteris asterothrix Kosenstock, Fedde Repert. 7 : 305. 1909. 

 This is the most developed form of the species and it can be easily confoun- 

 ded with I), megalodus, from which it scarcely can be distinguished by other cha- 

 racters than its pinnatifid apex and its generally narrower but larger and more 

 deeply cut pinnæ. From f. guadalupensis, which it resembles in most characters 

 it differs 1) by the hairs of the underside; they are anchor-shaped, i. e. they bear 

 on a short stalk 2—3 very short recurved branches; the costæ beneath are besides 

 the stellate hairs furnished with long, simple ones; the hairs of the upper surface 

 are like those of the type; 2) basal pair of veins almost constantly united, and 

 3) indusium small, deciduous, often not seen. 



