=A. subdiaphanum= (semi-transparent).* _cau._ woody, erect. _sti._ tufted, 2in. to 6in. long, firm, erect, scaly. _barren fronds_ 4in. to 8in. long, 1in. to 1-1/2in. broad, simple, both ends narrowed, the edge entire. _fertile fronds_ much narrower, on longer stipes. St. Helena. Greenhouse species. SYN. _Aconiopteris subdiaphana_.
=A. subrepandum= (slighty-waved).* _rhiz._ woody, wide-creeping. _sti._ of barren fronds stout, erect, nearly naked. _barren fronds_ from 1ft. to 2ft. long, 2in. to 12in. broad, copiously pinnate, with linear-oblong entire or subrepand pinnæ on each side, which are sometimes 6in. to 8in. long, and 2in. broad. _fertile fronds_ like the others, but smaller. Isle of Luzon, &c. Stove species. SYN. _Gymnopteris subrepanda_.
=A. taccæfolium= (yew-leaved).* _cau._ woody, densely scaly. _sti._ of barren fronds 1in. to 4in. long, scaly. _barren fronds_ from 1ft. to 2ft. long, 3in. to 12in. broad, simple, oblong-lanceolate, entire, copiously pinnate, with oblong-lanceolate pinnæ, 1in. to 6in. long, 1/2in. to 1-1/2in. broad, the upper ones narrowly decurrent, the lower ones forked at the base on the under side. _fertile fronds_ simple, 6in. to 12in. long, 1/8in. broad, or pinnate, with forked linear pinnæ. The three-lobed form of this species is sometimes known as _A. trilobum_. Philippines. Stove species. SYN. _Gymnopteris taccæfolia_.
=A. tenuifolium= (narrow-leaved).* _rhiz._ wide scandent, woody, slightly scaly. _barren fronds_ simply pinnate, the stipes 4in. to 6in. long, naked, firm, erect, the fronds 3ft. to 5ft. long, 12in. to 18in. broad; pinnæ 6in. to 9in. long, 3/4in. to 1-1/2in. broad, acuminate, the edge thickened and serrulate, short-stalked. _fertile fronds_ bipinnate, with longer stipes; pinnæ long-stalked, with numerous distant pinnules. South Africa. Stove or greenhouse species. SYNS. _A. Meyerianum_ and _Stenochlæna tenuifolia_.
=A. trilobum= (three-lobed). A form of _A. taccæfolium_.
=A. villosum= (hairy).* _rhiz._ woody, densely scaly. _sti._ 2in. to 4in. long, slender, densely clothed with scales. _barren fronds_ 6in. to 9in. long, 1in. to 1-1/2in. broad, acute, the lower part narrowed gradually; both surfaces scaly, and the edge more or less ciliated. _fertile fronds_ much smaller than the others. Mexico, &c. Stove species.