TAENITIS (from tainia, a fillet or ribbon; alluding to the linear pinnae). Including Cuspidaria, Neurodium, Paltonium, and Pteropsis. ORD. Filices. A small genus (five species) of interesting, stove Ferns, all tropical, but not very closely allied. Sori linear, but the line sometimes interrupted, central or sub-marginal. Some of the species scarcely differ from Toeniopsis [included under Vittaria] in fruit, but in all those placed here the veins anastomose. The following species have been introduced. For culture, see Ferns. TAENITIS angustifolia (narrow-fronded). fronds 1ft. to 1 1/2ft. long, 1/4in. to 1/2in. broad, narrowed very gradually to an acute point and below to the base or a short stem, flaccid; midrib distinct; veins immersed, forming two or three rows of vertical, hexagonal areolae. sori sunk in a groove, a short distance from the edge. Cuba to North Brazil, 1816. SYN. Pteropsis angustifolia. TAENITIS blechnoides (Blechnum-like). rhiz. creeping. sti. 8in. to 12in. long, firm, naked, glossy. fronds 1ft. to 2ft. long, 8in. to 12in. broad, simply pinnate; pinnae of barren fronds two or three on each side, 6in. to 9in. long, 1in. to 2in. broad, oblong-lanceolate, acuminate, cuneate at base, the edge thickened and wavy, the lower ones stalked; fertile pinnae narrower and more numerous. sori in a continuous line about midway between the edge and midrib. Malaccas and Philippines. TAENITIS blechnoides interrupta (interrupted). fronds, pinnae smaller than in the type. sori interrupted and much nearer the edge. TAENITIS furcata (forked). rhiz. somewhat creeping, densely tomentose. fronds 6in. to 18in. long, once or twice dichotomously forked or sub-pinnatifid; lobes linear, erecto-patent, much acuminated, entire, 4in. to 8in. long, 1/4in. to 1/2in. broad, coriaceous, minutely scaly below. sori sub-marginal, continuous or interrupted. West Indies, &c., 1824. SYNS. Cuspidaria furcata, Pteropsis furcata. TAENITIS lanceolata (lance-shaped). rhiz. creeping, very stout. sti. 1in. to 2in. long, firm, erect. fronds 6in. to 12in. long, 1in. to 2in. broad, gradually narrowed from the centre to both ends, the edge entire but often crisped, firm, coriaceous, with a distinct midrib; areolae immersed. sori in continuous or interrupted lines near the edge of the contracted upper third or quarter of the frond. West Indies and Guatemala, 1818. SYNS. Neurodium lanceolatum, Paltonium lanceolatum.