108 PIYMENOniYLLUM. 



64. H. erof!U?n, Bl. ; " frond tripiiinatifid ovate glabrous, 

 pinnnc alternate siibrhomboid-ovate, |)iniiulos ovate triangu- 

 lar digitato-pinnatifid, ultimate segments linear obtuse emar- 

 ginate and as well as the winged rachis subuudulate, valves 

 of the involucre oblong obtuse erose at the apex, stipes wing- 

 ed" BL En urn. Fil. Jav. p. 221. 



Hah. Trunks of trees in woods, Java and Moluccas, Dlume. — " Diffei-s 

 from //. (lemis.mm, Sw., which it much resemhles, in the shortei* pinnas and 

 form and colour of the valves of the involucres." 



65. H. dcedaleum, Bl. ; " fronds tripinnatifid ovato-oblong 

 glabrous, pinna; alternate approximate rhomboid-oblong cu- 

 neifonn-pinnatifid, the segments linear bi-trifid and as well 

 as the rachis winged sinuato-undulate, valves of the involu- 

 cre rounded erose towaals the apex, stipes winged above." 

 ni. En urn. Fil. Jav. p. 222. 



Hah. Mossy trunks of trees. Province of Bantam, Java, Bltime. — "Near 

 //. dichntomum, Cav. but distinct in the a|)i)roximate pinnae, in the seg- 

 ments not being spiuuloso-deutate and other characters. Involucres erose 

 at the apex." 



ii6. H. imhricatum, Bl. ; " fronds bipinnatifid ovate pur- 

 plish glabrous, pinnae alternate approximate rhombeo-oblong 

 pinnatifid, segments and pinnules trapezoid incised above and 

 subimbricate, ultimate segments linear obtuse, valves of the 

 involucre orbicular entire, stipes rounded." Bl. En. Fil. Jav. 

 p. 220. 



Hab. Mossy places, mountains of Java, Blume. — " Differs from H. san- 

 (jninolcnlum in the subdinaidiate pinnules, which are subbipinnatifid only 

 above and subimbricatcd.'' 



67. H. riccicefolium^ Bory in Willd.; fronds bipinnate, pin- 

 nie secund, lower pinnules pinnatifid u])pcr ones tripartite, 

 segments linear obtuse, sori terminal, involucres obovate, 

 rachis winged, stipes margined." Willd. Sp. PI. v. p. 531. 

 Adiantum teuellinn, Jacq. Coll. p. 287, i. 21, /". 3. 



Hab. Bourbon {Jacquin). " Stipes 1 inch long, margined ; fronds 2 — 3 

 inches.'' — Apparently, judging from the figure, allied to H. polyanthos. 



Dubious Species of this Section. 



68. ll.australe, Willd.; "fronds bipinnate, pinnides linear 

 obtuse, lower ones bifid, sori terminal, involucres emarginate 

 bidentate, rachis winged, stipes margined." Willd. Sp. PL 

 V. p. 527. 



Hab. Tasmania, Lahillardivre. — "Stipes 1| — 2 inches ; frond 2 inches 

 long. Involucres ovate, emarginate at the apex and obtusely bidentate." 

 Willd. — It will be seen that I have already, with a mark of doubt, referred 

 this to II. raruni, Br. ; but the character of the in' olucre would seem to 

 point to a very different species, with which I am probably unacquainted : 



