122 ENGLISH BOTANY. 



brown throughout, or rarely green in the upper part, channelled 

 above, with a few scattered hair-like deciduous dark-brown scales. 

 Lamina coriaceous or subcoriaceous, glabrous, usually shining, ever- 

 green, triangular-lanceolate or triangular-oblong or triangular or 

 deltoid-ovate, not attenuated towards the abrupt base, bipinnate or tri- 

 pinnate, more rarely quadripinnate ; lowest pair of pinnae larger than 

 the succeeding pair, ovate or lanceolate, conspicuously stalked, 

 ascending-spreading or ascending straight or curved upwards ; middle 

 pinnae similar to the basal ones, but smaller and usually less divided ; 

 pinnules or ultimate segments oblanceolate or ovate or rhombic- 

 elliptical or strapshaped, serrate or crenate-serrate at least towards the 

 apex ; teeth acute, sometimes shortly mucronate. Rachis usually 

 purplish-brown in the lower part, green in the upper part, margined ; 

 glabrous partial rachides narrowly winged, with the wing connecting 

 the bases of the pinnules. Pinnules with a flexuous mid-vein which 

 gives off forked or simple branches, running into the teeth. Sori 

 linear-oblong or strapshaped, straight, attached to the ultimate veins, 

 much nearer the midrib of the pinnules or ultimate segments than to 

 their margins, often ultimately confluent. Indusium entire. Spores 

 muricate-tuberculate, with rather large pointed tubercles. 



Var. a. genuinum. 

 Plate 1874. 



Stipes usually as long as the lamina, and frequently exceeding it. 

 Lamina coriaceous, opaque, shining with a greasy lustre, triangular- 

 lanceolate, shortly acuminate, bipinnate or subtripinnate ; lower pinnae 

 ascending, nearly straight ; all the pinnae acute or shortly acuminate ; 

 basal pinnules of the lower pinnae not contiguous, lanceolate or 

 rhombic-lanceolate, pinnate or pinnatipartite or pinnatifid, subobtuse 

 or subacute ; ultimate pinnules or segments ascending, subacute, 

 toothed towards the apex ; teeth longer than broad, gradually acute. 



Var. ft. obtusum. Kit. and Milde. 



Var. obtusatura, Moore, Nat. Print. Brit. Ferns, 8vo. ed. Vol. II. p. 76. Babenh. I.e. 



No. 36. 

 A. obtusum, Kit. in Herb. Willd. No. 19,927 (teste Mild.). Non Presl. 



Stipes usually shorter than the lamina, and rarely exceeding it. 

 Lamina coriaceous, opaque, shining with a greasy lustre, triangular- 

 ovate, more rarely lanceolate-ovate, acuminate bipinnate or (rarely) 



