212 16(1 



(ioniopieris strigosa Fée, 11 iném. 59 tab. 15 fig. 1. 1866 

 Nephrorlium siriijosum Jcnm. Hull. Dept. Jam. n. s. :i; 141. 1896. 



Type from San Domingo, Pldmiek Fil. tab. 91. 



To this species I refer all specimens without free pinnæ but with the lamina 

 narrowed below gradually into an entire or faintly toothed wing, '/2 cm broad. By 

 this character it is iilways different from D. (iiiacialupensis (Wikstr.) with which 

 Mettenius united it, and I have not found intermediate forms between the 

 two species. In Ark. for Bot. 9" I have given my rea.sons for my considering Pol. 

 incisum Sw. and Aspidium stenopteris identical with the true I), scolopendrioides {L.), 

 whicli was based on Plumier tab. 91, but later i)y Linnaeus confounded with my 

 D. yu(tdalu})ensis (Wikstr.). The confusion in the nomenclature of these two species 

 was due to Swartz, who rightly distinguished the two species but unfortunately 

 used the specific name scolopendrioUles for the latter species and renamed the former 

 Pol. incisum, and most authors have followed Swartz in his nomenclature. D. sco- 

 lopendrinides varies mainly in size, especially in breadth, but it is otherwise a rather 

 uniform species, which shows several good distinctive characters. The leaves are 

 densely fasciculate on an erect or shortly oblique rhizome, sometimes 20 — 30 to a 

 rhizome. The short stem (1 — 4 cm) is when young clothed with brown or blackish, 

 stellato-pilose scales. Some of the leaves, which are normally sterile, are short and 

 spreading, others up to 4 dem long, erect and fertile and sometimes ending in a 

 retuse viviparous apex with a rosette of small leaves. The lamina, which tapers 

 gradually from the middle to both ends, is generally linear, ca. 3 cm broad at the 

 middle, and varies from being deeply and broadly serrate to pinnatifid ' :i or '/-i 

 of the way to the midrib with triangular, acute lobes, which are often very une- 

 qual in size, some of them being lengthened, 3— 4 cm long. Texture more or less 

 coriaceous, often very rigid. Stem, midrib and veins beneath generally densely 

 stellato-pubescent by short multibranched hairs, upperside and leaf-tissue beneath 

 as a rule glabrous, but the under-surface distinctly verrucose. Veins raised beneath, 

 simple or rarely forked, the basal pair anastomosing. Sori supramedial in a single 

 row — seldom in two rows - furnished with a small stellato-pilose indusium. 

 Sporangia glabrous. 



The common Cuban form (A. stenopteris Kze.) ditVers from the type by a longer 

 stem and much lengthened middle segments with furcate veins, which in the lar- 

 gest forms are sometimes found anastomosing, and by its very long decurrent base 

 of the lamina, but I can not consider that form ditTerent from the type even as a 

 variety. Pol. praelongnm Poir. is essentially the same, but its veins are more bran- 

 ched and the sori in the lengthened segments often biserial. 



Specimens examined: 



Haiti: Port au Prince, Picarda nr. 385 (Cl — Stkngei. (B). 



San Domingo: Bai.bi.s U). Petit Trou, Barabnna, v. Ti'khckhkim nr. 2H43 Bi. 



.lamaica: SwAinz (S = Pol. incisum .S\\. i 



