207 



entire or the inferior lobed on one or both sides at the base ; powder 

 pale yellow. 



var b. G. chrysophylla, Kaulf.— Fronds uniformly tripinnats ; stipi- 

 tate and raehiees castaneous ; powder deep yellow. PI. Fil. t. 44. 



Abundant in the lowlands and among the lower hills throughout the 

 island, on open banks and exposed rocky places fully open to the sun ; 

 a very hardy plant, found from the wettest districts to the arid plains 

 of Liguanea. Distinguished from its allies by the erect habit, sharp- 

 pointed segments, and more herbaceous texture, a is usually smaller 

 than the type, and reaches a higher mountain elevation. This and b 

 are abundant at the old mines near Hope and Gordon Town. The 

 latter is as large as the type. 



12. G. sulphurea, Deav. — Stipites densely tufted from a fibrous erect 

 or oblique rootstock, slender, castaneous, glossy, 2-4 in. 1. ; fronds 

 spreading, lanceolate, or the larger ovate-lanceolate, acuminate, herba- 

 ceous, upperside naked and bright green, under densely covered with 

 yellow powder; ft. 1. 3-6 in. w., bi-tripinnatifid, somewhat re- 



duced at the base, the rachis slender, castaneous, polished; pinnae 

 spreading or erecto-spreading, distant below, nearly sessile, lanceolate, 

 l|-4 in. 1 ^-1 in w. ; pinnulae in. 1. 2-4 li. w., ovate-oblong, blunt 

 or rounded and dentate at the apex, widest at the base, lobed or pin- 

 natifid; tertiary segments ovate-oblong or the lower flabellate cuneate, 

 1-2 li. w. and d , dentate or inciso-dentate, the teeth retuse ; veins 

 forked, verv oblique, pinnate in the pinnulae : sori oblong often con- 

 fluent. —PL Fil. t. 48. B. 



a. G. Wihoni, J. Sm. — Fronds 3-5 in. 1. f-1^ in. w. short -petioled; 

 rachis margined in the upper part ; pinnae and segmants close, some- 

 what crispate, freely soriferous, powder not copious. 



Frequent on damp banks and under the shade of rocks from the 

 lowlands up to 4,500 ft. alti. ; a much more delicate and slender plant 

 than any of the yellow states of calomelanos, with shorter sori, obtuse 

 lobes, and deeper coloured powder. Of the small variety, G. Wilson i, 

 J. Smith, there are specimens both in the Kew and British Museum 

 Herbaria collected by Wilson "near Arntully Gap, St. David," and I 

 have gathered it myself at several places above 3,000 ft. alt. It is often 

 nearly devoid of powder, more leafy and deeply incised, with sharper and 

 more emarginate teeth than the type. Wilson says it does not grow 

 larger than his specimens, which are, 3 - 4 in Land an inch or less wide. 

 It varies, however, in size and my specimens exceed his, but it is never 

 large. 



Genus XXVIII. Enterosora, Baker. 



Sori linear-oblong, immersed on the veins, within slits of the paren- 

 chyma of equal length, which at first quite enclose it with connivent 

 edges but are subsequently open, forming one or two irregular series on. 

 each side of the midrib, directed obliquely to the margin ; veins forked, 

 oblique, the branches more or less uniting at the margin ; fronds simple, 



A remarkable moDotypic genus, that differs from the rest of this 

 group, and might therefore be included in the next, in having the sori 

 enclosed within the parenchyma in slit-like cavities of the cuticle, so 

 that when young, as seen held up to the light it seems to be quite inside 

 the frond. 



