412 60. ACROSTICHUM, ** STENOCHL^ENA. 



** Stenochlgena, J. Sin. Barren fronds simply pinnate, the pinnce like those of 

 Lomaria in their shape, coriaceous texture, and fine close venation. Sp. 66-70. 

 Fig. 60. f. g. 



66. A. (Steno.) sorbifolium, L. ; rhizome thick, woody, often 30-40 ft. 1., 

 clasping trees like a cable, sometimes prickly ; jr. 12-18 in. 1., 6-12 in. br., 

 simply pinnate ; barren pinnce 4-8 in. L, f-<| in. br., 3 to 20 on each side, articu- 

 lated at the base, the ede entire or toothed ; texture coriaceous or subcoriaceous ; 

 both sides naked ; rachis often winged ; fertile pinnce 1-2 in. apart, 2-4 in. 1., 

 J-f in. br. Hk. Sp. 5. p. 241. 



Hab. West Indies to Peru and South Brazil ; Fiji, Samoa, New Caledonia, Philip- 

 pines, Malaccas, Cochin China, Seychelles, Mascaren Isles, Angola, Guinea Coast. 

 This corresponds to the genus Lomariopsis of Fe*e, who makes 17 species. The type 

 has 12 to 20 pairs of pinnae about 2-3 in. 1., f in. br., the edge slightly and irregularly 

 crenato-serrate ; S. longifolia, J. Sni. (Lomaria, Kaulf.), fewer pinnae, the edge more 

 distinctly toothed, and the base cuneate ; A. yapurense, Mart. (Gard. F. t. 57), pinnae 

 sometimes 1^ in. br., 3 to 6 on a side, almost entire, the texture not so coriaceous, and 

 the veining not so close ; L. fraxinea, Willd., short-stalked, entire, pinnge often 5-6 in. L, 

 1-1 \ in. br. ; L. Wrightii, Eaton, oblong-obovate pinnae remarkably narrowed at the 

 base, and cuspidate at the apex ; and L. cuspidata, Fee, long-stalked, ligulate-cuspidate 

 pinnae sometimes 8 in. 1. Here also, as abnormal forms, probably belong A. buxifolium, 

 Kze., pinnae sessile, coriaceous, dark-green, oblong, very obtuse, under 1 in. L, | in. br. ; 

 L. variabilis, Fde, lower pinnae deeply pinnatifid, with round crenated lobes ; Polyp. ? 

 binerve, Hk., and L. Smithii, Fe, frond sessile, deltoid, tripinnatifid, the pinnules small, 

 dichotomously forked, or with 2 ligulate lobes on each side. 



67. A. (Steno.) decrescens, Baker ; rhizome woody, wide-scandent ; st. 2-3 

 in. 1., firm, slightly scaly; barren fr. 18 in. L, 4 in. br., with about 40 pinnae 

 on each side, those about a third of the way down the longest, and from this 

 narrowed very gradually down to mere auricles at the base ; pinnce close, in. br., 

 the edge obscurely crenulate ; texture coriaceous ; both sides naked ; rachis slightly 

 winged upwards ; fertile pinnce ^ in. br., cuneate at the base or subpetiolate. A. 

 polyphyllum, Hk. Sp. 5. p. 243. (not p. 269). 



Hab. Cameroon Mountains, West Tropical Africa, Mann, 1391. 



68. A. (Steno.) scandens, J. Sm. ; rhizome woody, wide-scandent, scaleless ; 

 st. 3-4 in. 1., firm, erect, naked ; fr. 1-3 ft. 1., 1 ft. or more br., simply pinnate ; 

 barren pinnce 4-8 in. ]., f-1^ in. br., the point acuminate, the edge thickened 

 and serrulate, the base cuneate, sessile, or slightly stalked, articulated, and with 

 usually a gland on the upper side ; texture coriaceous ; rachis and both sides 

 naked ; veins fine and close ; fertile pinnce 6-12 in. L, 1^-2 lin. br., the lower 

 ones 1-1 1 in. apart. Hk. Sp. 5. p. 249. 



Hab. Himalayas and South China to Ceylon, Queensland, and Fiji. The veins here 

 spring from a line (see fig. 60. f.) which runs parallel with the midrib, either quite close 

 to it or with a very narrow space between. Davallia achilleifolia, Wall. (Hk. Sp. 1. 

 p. 195. t. 56. D.), seems to be a deltoid tripinnatifid abnormal form. 



69. A. (Steno.) laurifolium, Hk. ; st. firm, erect, naked ; fr. 2-3 ft. 1., 12-18 

 in. br., simply pinnate ; barren pinnce 6-9 in. L, 1^-lf in. br., narrowed gradually 

 from the cordate base to the apex, the edge sharply but finely toothed, the base 

 sessile, not articulated and without a gland ; texture coriaceous ; rachis and both 

 sides naked ; veins fine and close ; fertile pinnce 6-10 in. 1., - in. br., the lower 

 ones 1-2 in. apart. Hk. Sp. 5. p. 251. 



Hab. Philippines, Cuming, 2261 ; Solomon Isles, Milne, 518. Like the last, but larger, 

 and the pinnae not articulated. 



70. A. (Steno.) tenuifolium, Baker ; rhizome wide-scandent, woody, slightly 



