272 ACROSTICHUM, § GYMNOPTERIS. 



nerve, Hask. Kze. Gymnopteris Vespertilio, Hook. Land. 

 Journ. Bot. v. ])• 193.^. 7 c^nd 8. Acrostich., Metten. Ana- 

 pausia, Moore. Cheiropleuria, Pr. — Var. /3, integrifolia, Eat. 

 in Herb. Hook. ; fronds of both kinds ovate acuminate entire. 



Hab. Java, on trees, Blame, Thos. Lohb, Zollinger. Loochoo Islands, mostly 

 with quite entire fronds, C. Wright. — A most remarkable and very handsome 

 Fern, probably only known in a barren state to Blume, its first discoverer, or he 

 could not have referred it to Polypodium ; and hence I overlooked his plant 

 when I described it as Gymnopteris Vespertilio, — a very applicable name for the 

 normal state of the sterile frond, but which has been found quite entire in the 

 Loochoo Islands, and that far more common than the bicuspidate state. 



149. A. (Gymnopteris) tricuspe. Hook. ; caudex creeping 

 clothed with subulato-setaceous ferruginous scales, stipites 1 

 foot long, 1^ of the fertile frond; sterile frond subcoriaceo- 

 membranaceous subtriangular-cordate 8-10 inches long 10-12 

 inches wide at the base including the spread of the lateral 

 lobes, deeply trilobate, lateral lobes 5 inches or more long 1^ 

 inch wide horizontally patent, intermediate one 6 inches and 

 more long 2 inches wide, all of them oblongo-lanceolate acu- 

 minate entire unicostate, venation manifest, costules distant 

 indistinct connected by transverse irregular curved veins 

 forming large areoles enclosing lesser ones which have co- 

 pious free branched and divaricating veinlets ; fertile fronds 

 much elongated but contracted tripartite nearly to the base, 

 segments scarcely h an inch wide linear strap-shaped acumi- 

 nate, lateral ones 9-10 inches long erecto-subpatent, inter- 

 mediate one a foot and more long, sori universal except on 

 the costa. (Tab. CCCIV.) 



Hab. Hot valleys of Sikkim-Himalaya, Mrs. Atkinson. — This very fine and 

 new species, with not a little of the habit and venulation of A. bicuspe, diifers 

 remarkably in being trilobed or tripartite, and it has always a solitary central costa 

 to each lobe. One of my specimens has the three segments only partially contracted 

 a nd fertile. 



150. A. (Gymnopteris) aHenum,Sw.; caudex stout creeping 

 paleaceous, stipites l-H foot long sparsely scaly at the base; 

 fertile ones the longest, fronds varying much in size 6 inches 

 to H-2feetin length bright- green membranaceous; steri/eones 

 when young subsimple or only pinnatifid below, when fully 

 developed more deeply divided at length pinnated pinnatifid 

 above, pinnee numerous 5-6-8 inches long 1-2 inches broad 

 subpetiolate lanceolate finely acuminate lobato-pinnatifid 

 serrated towards the apex, lowest pair dilated at the lower 

 margin and more deeply pinnatifid, lobes subserrated, ter- 



