GO. ACROSTICHUM, **** f GYMNOFTEIUS. 



C. Barren fronds copiously pinnate. Sp. 101-107. 



101. A. (G3 r m.) repandum, Blume ; st. of barren fr. 6-12 in. 1., naked ; barren 

 fr. 1-2 ft. 1., 8-12 in. br., sometimes elongated and rooting, with numerous pinnce 

 on each side, the lower ones 4-6 in. 1., f-1 in. br., the edge with entire blunt lobes 

 reaching a quarter of the way down ; texture herbaceous ; rachis and both sides 

 naked ; main veins distinct ; areolce copious, without free veinlets, the sinuses 

 often setose ; fertile pinnce 2-3 in. 1., 2-3 lin. br., stalked, entire or repand. 

 Hk. Sp. 5. p. 260. /3, A. Quoyanum, Gaud. ; pinnce lobed halfway down or 

 more, the lobes toothed. Hk. Sp. 5. p. 259. C. bipinnatifidum, Mett. 



Hab. South China, Bonin, Philippine, Malay, and Polynesian Isles, New Caledonia, 

 Queensland, Seychelles. The two varieties seem to be connected by gradual interme- 

 diates. N. aryutum, Fe"e, is probably this in an undeveloped condition. 



102. A. (Gym.) punctuZatum,Sw.> rhizome firm, wide-creeping; st. of barren 

 fr. 6-12 in. 1., slightly scaly, the latter 12-18 in. L, often 1 ft. br. with a terminal 

 pinna and 1 to 8 on each side, which are 4-9 in. L, 1-2 in. br., lanceolate or 

 oblong, narrowed at both ends, the edge entire or repand ; texture papyraceous ; 

 rachis and both sides naked ; main veins pinnate, with copious hexagonal areolae 

 between them without free veinlets ; fertile fr. on a longer slender stem with 

 similar but much smaller pinnae. Hk. Sp. 5. p. 258. A. punctatum, Linn. 



Hab. Mascaren Isles, Zambesi-land, Guinea Coast, Angola. 



103. A. (Gym.) subrepandum, Hk. ; rhizome woody, wide-creeping ; st. of 

 barren fr. stout, erect, nearly naked ; barren fr. varying from simple, 1 ft. 1., 

 ]|-2 in. br., to 2 ft. 1., 1 ft. br., copiously pinnate, with several linear-oblong 

 entire or subrepand pinnce on each side, which are sometimes 6-9 in. L, 2 in. br. ; 

 texture subcoriaceous ; surfaces and rachis naked ; main veins distinct nearly to 

 the edge, with copious areolae with free veinlets between them ; fertile fr. like the 

 others," but smaller. Hk. Sp. 5. p. 275. A. Gollingeri, Kze. 



Hab. Luzon, Cuming 225 ; Penang, Sir W. Nai-ris, Mactier. Very near the last, but 

 firmer in texture. 



104. A. (Gym.) alienum, Svv. ; rhizome woody, short-creeping ; st. 6-18 in. 1., 

 scaly downwards ; barren fr. 1-2 ft. L, often 1 ft. br., the upper part deeply 

 pinnatifid, with lanceolate lobes, the lower part pinnate, with entire or deeply 

 pinnatifid lower pinnae, the lobes sometimes reaching more than halfway down to 

 the rachis ; texture papyraceous ; rachis and surfaces naked, a distinct midvein 

 in each of the lobes ; areolce copious, irregular, with free veinlets ; fertile fr. 

 much smaller, with distant narrow linear or pinnatifid leafy pinnae. Hk. Sp. 5. 

 p.272. f$,A.semipinnatifidum, Ilk. ; areolce \\it\\ few or no free veinlets. Hk.Sp. 

 5. p. 273. 



Hab. Cuba and Mexico to North Peru and the Amazon Valley. This and the next 

 are the American analogues of the thret preceding. Mettenius (Annales, 5. sen vol. 2. 

 p. 204) has two closely allied species from New Granada under the names of Chrysodium, 

 opacum and pdlucens. 



105. A. (Gym.) nicotiancefolium, Swz. ; rhizome woody, wide-creeping, scaly; 

 st. l|-2 ft. L, scaly below; barren fr. 1-3 ft. 1., often 1 ft. br., with a large 

 terminal pinna and 1-3 lateral pairs, which are 6-12 in. L, 1-3 in. br., the apex 

 acuminate, the edge entire or nearly so, the base slightly rounded or subcuneate ; 

 texture papyraceous or subcoriaceous ; rachis and surfaces naked ; main veins 

 distinct to the edge, with transverse veinlets, with copious fine areolce with free 

 veinlets between them ; fertile pinnce distant, 3-4 in. 1., |-1 in. br. Hk. Sp. 5. 

 p. 275. G. F. t. 26. 



Hab. Cuba to the Amazon Valley. 



