ASPLENIUM. 



495 



A. (Euasplenium) angolense — Eu-as-ple'-ni-um ; an-'go'-len-se (from 

 Angola), Baker. 



A stove species, of medium growth and very singular appearance on 

 account of its fronds, which are oblong-deltoid (in shape of a Greek delta, A), 

 5in. to Gin. long, being borne on tufted stalks 6in. to 12in. long, of a dull 

 green colour, and furnished with a few minute, spreading, long and narrow 

 scales. These fronds, which are gemmiparous (bearing small leaf-buds on 

 their outer surface) and of an almost leathery texture, have their stalk 

 continuously winged in the upper half and below the pinna? (leaflets), which 

 are three or four times divided, and of a particularly dark green colour. 

 The abundant sori (spore masses) are regular, parallel, and reach from near 

 the midrib to within a very short distance of the edge. — Hooker, Synopsis 

 Filicum, p. 485. 



A. (Euasplenium) angUStatum — Eu-as-ple'-ni-um ; an-gus-ta'-tum 

 (narrow), Presl. 



This stove species, of Brazilian origin, is the nearest to A. adiantoides, 

 but much less divided, with blunt, sessile, sub-spathulate pinnules (stalkless, 

 nearly spoon-shaped leafits). Its fronds, 6in. to 12in. long and 4in. to 6in. 

 broad, borne on naked, greyish stalks 6in. to 12in. long, are furnished on 

 each side of their midrib with numerous pinnse (leaflets) 2in. to 4in. long, 

 ljin. to 2in. broad, and of a thin, papery texture, showing its long and 

 narrow sori (spore masses), which fall considerably short of the edge. — 

 Hooker, Synopsis Filicum, p. 217. 



A. (Euasplenium) angustifolium— E u-as-ple'-ni-um ; an-gus-tif-ol'-i-um 

 (narrow-leaved), Michaux. 

 This is a very distinct and elegant, greenhouse Fern, native of North 

 America, where, according to Eaton, it is found in Ontario and New England, 

 extending westward to Wisconsin and southward to Kentucky, Virginia, and 

 probably the mountains of Northern Georgia ; in these habitats it luxuriates 

 in damp, rich woods, especially in the mountainous districts, and it is com- 

 moner in the states bordering on the Ohio than in New England. Unlike 

 most of the known Aspleniums, the barren and fertile fronds are so different 

 in appearance as to give the plant a character quite distinct from other species 



