5 



involucres large, few or several, confined to the top of the frond, reoeptacles often slightly inserted. 

 In forests, 2,000 — 6,000 ft. alt., on logs, trees, &c. 



There are two forms or varieties, — one, small with densely crowded divisions, the other much 

 larger and lax in habit. In leaf and cutting it resembles small forms of polyanthos, and in fruit abrup- 

 tum. In some cases the sori are so crowded that they occur to form a double row across the truncated 

 top of the frond. 



7. B.. polyanthos, Swartz. 



Fronds 2 — 6 in. 1 , 1 — 2 in. w., variously shaped, pendent or somewhat erect, thrice or four times 

 pinnately divided, rachis winged ; pinnae f — 2 in. 1., ^ — \ in. br., final divisions ^ — \ li. w., 1-2 li. 1. ; 

 sori numerous ; 



involucres spherical or ovate, flat or convex, usually rather wider than the leaf-divisions, the lips 

 rounded or acute. 



Most abundant from 1,500 ft. alt. up to the highest peaks. 



Very variable. In the typical form, the fronds are weak and pendent, of varying form, with flat 

 nearly circular involucres ; in variety H. sanguinolentum, Swartz, which is equally common, they are 

 stifler, erect or curved, broadest at the base and uniformly tapering upwards to a long point, the sori 

 numerous in the upper half or third of the frond, the involucres ovate and acute, the valves convex. 



8. H. protrusion, Hook. 



Fronds pendent, 3 — 6 in. 1., 1 — 2 in. w., oblong shaped, thrice or four times pinnately-divided, rachis 

 winged ; pinnae f — 2\ in. 1., — § in. w. final division 4, — \ li. w., colour tan-green ; 

 sori numerous in the upper half of the frond ; 



involucres longer than broad, hardly wider than the leaf division, the lips generally open, recep- 

 tacles in part exterted, often considerably. 



Infrequent in the same situation and over the same range as the preceding species, which it re- 

 sembles in leaf and cutting, presenting a parallel series of forms, differing in colour, and specially 

 marked by the protruding hair-like receptacles. 



9. H. clavatum, Swartz. 



Fronds somewhat erect, thrice or four times pinnately divided, lance-shaped, tapering to a long 



point, 3 — 7 in. 1., § — 1^ or 2 in. w., rachis winged, pinnae spreading, often nearly horizontally, \ 1 



in. 1., | ■ — \ in. w., tapering outwards ; final divisions \ — \ li. w., generally with wavy margins ; 



sori nearly spherical, stalked, situated on the lower contracted lobes of the pinnules, few or numer- 

 ous, generally confined to the upper half of the frond, lips of the involucres open, rounded. 



Common in forests, &c. at 5,000 ft. alt. and upwards. 



Easily distinguished by the spherical, shortly stalked and often reflexed sori, which suggested the 

 name clavatum. In some cases the sori are so numerous as to quite cover the under side of the frond. 

 H. splmrocarpum, V.D.B. and H. myriocarpum, Hook, represent forms of varying habit of the same 

 species. 



10. H. undulatum, Swartz. 



Fronds oblong, little if any reduced at the base, 2 — 4 in. 1., £ — f in w., thrice or four times 

 pinnately divided, rachis winged pinnae nearly horizontal but the outer part generally up-curved, close 

 and ovei lapping, ^ in. w., $ in. or less 1. all the parts crowded, final divisions, \ 1. w. or le3s, with 

 wavy crispy margins, the wings of the rachis narrow and wavy ; 

 sorUpherical, numerous, shortly stalked; 



involucres open,cleit to the base, lips rounded. 



Collected only by Swartz. From its character probably found at a high altitude. 

 It is smaller, but otherwise resembles the denser states of clavatum from which it is very doubt- 

 fully distinct. 



11. H. axillare, Swartz. 



Fronds pendent, weak, narrow with margins nearly parallel, 3 — 9 in. 1., ^ — in. w., thrice-pin- 

 nately divided, rachis winged, pinnae crowded \ — \ in. 1. (sometimes irregularly extended to much 

 more), 2 — 4 li. w., final division \ li. w., apex blunt, margins of fronds and wings of rachis wavy or 

 crispy ; 



sori very small, numerous, spherical or compressed ; 

 involucres as wide as the leaf-divisions, closed or open. 



Very abundant on rocks and banks in forests and by waysides about 5,000 ft. alt. 

 The long narrow pendent weakly fronds, and abundant, very small sori, well mark this species 

 H apicale, V.D.B. is a form of the same. 



12. H. crispum, H.B.K. 



Fronds pendent, narrow with margins nearly parallel, 2 — 6 in. 1., ^ — | in. w., thrice-pinnately 

 divided, rachis winged, of a bright yellowish- gold colour ; pinnae £ in. 1. (occasionally more by 

 irregular extension), 2 — 4 li. vv., close or crowded, fiaal divisions J li. w., margins very crispy; 



sori small, generally numerous spherical, occupying most of the divisions ; 



invi lucres with lips rounded and crispy. 



Frequent in coffee plantations and forests above 2,000 ft. alt., growing on logs. 

 It is so densely crispy that the margins appear as if toothed, by which character and its yellow 

 colour it is easily distinguished. 



13. H. lanatum, Fee. 



Fronds pendent, soft and thin, narrow with margins nearly parallel, \ — 2 \ in. I, \ 4 in w 



uniform in width or tapering upwards, apex blunt, base wedge-shaped, regularly pinnately-divided' 

 rachis winged, divisions simple, but an odd one casually forked, 2 — -4 li. 1., \ — 1 li, w., greyish in colour 

 with hairs arranged more or less in groups ; ' 



sori terminal on the upper divisions, rarely on all ; 



