420 60. ACR.OSTICHUM, **** ft CHBYSOD1UM. 



100. A. (Gym.) Preslianum, Hk. ; rhizome woody, short-creeping ; st. 4-8 

 in. 1., firm, erect, naked ; barren fr. 1 ft. 1., 6 in. br., with numerous erecto- 

 patent pinnae on each side, which are 2-3 in. 1., in. br., the edge entire, 

 narrowed to both ends, the lower ones short-stalked ; texture subcoriaceous ; 

 rachis and both sides naked ; venation of Goniophlebium ; fertile pinnae 1 in. 1., 

 in. br., blunt, stalked. Hk. Sp. 5. p. 265. (not p. 220). 



Hab. Philippines, fide Presl ; Concan, Mr. Law. Habit resembling that of the 

 narrow-leaved forms of the next, but the venation peculiar. There are two plants given 

 under the same name in "Sp. Fil." 



107. A. (Gym.) virens, Wall. ; rhizome woody, short-creeping ; st. of barren 

 fr. 1-2 ft. 1., firm, erect, naked, the latter 1-3 ft. 1., often 1 ft. br., with numerous 

 sessile pinnae on each side, which are 4-8 in. 1., f-1 in br., the edge repand or 

 bluntly lobed, the terminal one sometimes elongated and rooting at the point ; 

 texture subcoriaceous ; rachis and both surfaces naked ; veins pinnate, main 

 veins distinct, the veinlets of opposite groups joining, with usually a single 

 quadrangular areole between them, free veinlets none ; fertile fr. on longer 

 stems, the pinnse 2-4 in. L, ^-^ in. br., linear or ligulate, entire or lobed. Hk. fy 

 Gr. t. 221. A. terminans and contaminans, Wall. Bolbitis, Schott. /3, A. 

 crispatulum, Wall. ; pinnae narrow, coriaceous, crisped, the veins anastomosing 

 principally in costal arches. y, A. proliferum, Hk. ; pinnae broad ; main veins 

 close, distinct, the veinlets of contiguous groups joining at an angle, as in 

 Goniopteris, from which proceed one or in the lower areolse two free veinlets, 

 terminal pinna usually elongated and rooting. Hk. Ic. t. 681-2. 8, A. costatum, 

 Wall. ; pinnce 8-12 in. 1., 2-3 in. br., tinged with red ; main veins very distinctly 

 raised beneath, 1^-2 lin. apart, the transverse veins joining at an angle, with 2-3 

 free veinlets or areolse between them. Hk. Sp. 5. p. 262. 



Hab. Himalayas to Ceylon, Formosa, and Moulmein ; Angola, Fernando Po, Sierra 

 Ijeone. We cannot draw any clear line of separation between the plants here placed as 

 varieties. There are two remarkable abnormal states, one, Meniscium deltiyerum, Wall., 

 with the fertile pinnae nearly as broad as the barren ones, and the sori in triangular, 

 often confluent, patches between the main veins ; and the other, Notholcena, undulata, 

 Wall. (Jenkinsia, Hk. Gen. Fil. 75), with the sori in a broad baud along the edge of the 

 pinnae, which is sometimes lobed between the main veins. 



ft Chrysodium, Fee. Fronds dimorphous, or in A. aureum, the upper pinnce 

 like the others and fertile; main veins none or indistinct. Sp. 108-128. 



A. Barren fronds entire. Sp. 108-114. 



108. A. (Chrys.) minus, Mett. ; rhizome wide-creeping, firm ; st. of barren fr. 

 1-2 in. 1., naked, stramineous; barren fr. 1J-2 in. L. |-^ in. br., the point 

 bluntish, the edge quite entire, the base tapering gradually ; texture herbaceous ; 

 surfaces naked ; no main veins ; areolce copious, with copious free veinlets, 

 bounded by a wavy intramarginal line ; fertile fr. H-2 in. 1., | in. br., the st. 

 slender, naked, 3-4 in. l.Hk. Sp. 5. p. 277. 2nd Cent. t. 78. 



Hab. Philippines, Cuming ; Khasya (2-3,000 ft.), Hk.fil. & Thomson. 



109. A. (Chrys.) lanceolatum-, Hk. ; rhizome woody, wide-creeping ; st. of 

 barren fr. 1-6 in. 1. ; barren fr. 6-12 in. 1., -2 in. br., the point blunt or acute, 

 the edge entire, the lower part narrowed very gradually ; texture herbaceous ; 

 surfaces naked ; main veins raised, but falling considerably short of the edge ; 

 areolce copious, with free veinlets ; fertile fr. 6-12 in. 1., -|- in. br., the st. as 

 long. ft, G. normalis, J. Sin. ; barren fr. sessile, 2-4 in. 1. Hk. Sp. 5. p. 157. 



Hab. Peninsular India, Ceylon, Malaya, Philippines. 



110. A. (Chrys.) axillare, Cav. ; rhizome wide-scandent ; barren fr. 6-18 



