163 



larged, obliquely sub-deltoid, the margin even ; veins simple, curved, 

 4-6 to a side, the lowest opposite ones united, sending a single branch 

 to the sharp sinus, near which the next pair enter ; sori nearer the mid- 

 vein, involucres small, fugacious. — Journ. Bot. 1886 by 271. 



Ocho Rios gully, St. Ann, discovered by Mr. Sherring growing in 

 moist forests on wet calcareous rocks. It is a smaller plant than usi~ 

 tatum, its nearest ally, with the under surface similarly microscopically 

 warted, but with, as a rule, narrower pinna), less acuminated at the 

 entire points, and with enlarged basal lobes, the inferior ones being 

 gradually reduced till the lowest are only £-1 in. long. The latter is 

 an unmistakable determining character. The upper pinnae are suben- 

 tive throughout, more or less free, and auricled on both sides at the 

 base. Endemic. 



39. N. jamaicense Baker. — Stipites caespitose from a strong, wiry- 

 rooted, erect rootstock, slightly scaly at the base, 3-6 in. L, grayish- 

 puberulous ; fronds oblong lanceolate or lanceolate, 1-1 J ft. 1. 4-6 in. 

 w., shortly reduced at the base, hard and subcoriaceous, grayish- green, 

 puberulous on the costae and slightly also often on the general surface ; 

 rachis grayish with dense stellate puberulae, and channelled ; pinnae 

 contiguous or subdistant, spreading, stipitate or nearly sessile, 2-4 in. 

 1. ths in. w., oblong-lanceolate, the point subentire bluntish or 

 acute, lower 1-3 pairs more or less reduced and deflexed ; cut |-f ths to 

 the costae into oblong blunt segments, which are widest within and 

 open at the apices with a crenulate-undulate subreflexed margin, (ap- 

 pearing on the upper side as if thickened,) basal pair reduced in the 

 lower pinnae , veins 8-10 to a side, simple, or the lower ones openly 

 forked near the margins, raised beneath but evanescent at the sori, 

 branches of the costal pair often forming with the vein that runs from 

 the inferior limb to the sinus a pair of areolae between the forks ; sori 

 small, nearer the margin below, but the midrib above ; involucres 

 small clothed with stellate puberulae. — Journ. Bot. 1877. 264. 



Infrequent on half-open banks and in forests from 3,000-5,500 ft. 

 altitude ; St. Andrew and Portland parishes ; Old England and the re- 

 gion of the Government Cinchona Plantation. Midway in general as- 

 pect between deltoideum and Polypodium asplenioides. The general 

 gray colour, pale and prominent costae ribs and veins of the underside, 

 crimpled edge, that seems as if thickened on the upperside, the 

 branched veins, and the areolae which are often formed within the 

 forks of the costal pair, well distinguish the species. The segments 

 are somewhat unequal occasionally. N. Bermudianum, Baker, is near- 

 ly identical with this. Endemic. 



40. iV. deltoideum, Desv.— Stipites coespitose from a decumbent elon- 

 gating rootstock, channelled, 3-6 in. 1. below the merely auricled por- 

 tion of the fronds, scaly and slightly muricate at the base ; fronds 1^-2 

 ft. 1. 6-9 in. w., the apex pinnatifid with blunt lobes, suddenly reduced 

 in the lower half or third to small auricles, which line the stem on 

 each side, decreasing in size to the base, hard and subcoriaceous in tex- 

 ture, dark green paler beneath ; pinnae spreading, contiguous or sub- 

 distant, 3-5 in. 1. f-1 in. w., truncate and sessile at the base, the acu- 

 minate or bluntish apex subentire ; cut § rds to the costae into close, 

 flat oblong, obliquely rounded, straight or subfalcate segments 2-2£ li. 

 w. and 3-4 li. deep to the sharp sinus ; margins entire, rather convex 



