248 196 
about ?/s 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, stellato-pilose indusium. Sporangia glabrous. 
This species is closely allied to D. lugubris, from which it differs mainly by 
the absence of scales on rachis and costze beneath and by fewer veins. KrorzscH'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 pinnas, which are 20—25 cm long, 2 cm broad; cost: 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 
L f. guadalupensis (Fée). 
Syn. Nephrodium guadalupense Fée 11 mém. 89 tab. 24 fig. 3. 1866. 
Dryopteris guadalupensis O. Ktze.; C. Chr. 269. 
Trinidad: Bot. Gard. Herb. nr. 4118 (C). 
St. Vincent: H. H. & G. W. SurrH nr. 1348 (C). 
4 Guadeloupe: L'HEnMiNIER nr. 34 et 132 (B); Pere Duss nr. 4040 (B, C, W), 4032 (RB), 4453 (B, W). 
Martinique: Pere Duss nr. 4750 (W). 
Porto Rico: Barnis (B). 
Jamaica: Brighton near Hope Bay, ALEx. Moore (W); JENMAN (W); Hanr nr. 303 (W). 
Cuba: Monte Verde nr. 1009 (B, S), 1010 pt. (B). 
— var. Biolleyi (Christ). 
Syn. Aspidium Biolleyi Christ, Prim. Fl. Costaric. 3: 31. 1901. 
Aspidium guadalupense Christ, Bull. Soc. bot. Belg. 35: 210. 1896. 
Dryopteris guadalupensis Christ, Bull. Boiss. II. 7: 264. 1907 (with full 
description). 
Dryopteris asterothrix Rosenstock, Fedde Repert. 7: 305. 1909. 
This is the most developed form of the species and it can be easily confoun- 
ded with D. 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 pinnz. 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 coste 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. 
