PELL^A. 



63 



P. i. serratifolia — ser-ra-tif-ol'-i-a (having saw-edged leaves), Hooker. 



In this variety, which is also known under the name of Pteris fallax, 

 and which partakes of the same habit and dimensions as the species, the 

 pinnules (leafits) are distinctly toothed. — Hooker, Second Century of Ferns, 

 t. 72. Nicholson, Dictionary of Gardening, iii., p. 67. 



P. (AUosorus) involuta — AU-os-o'-rus ; in-vol-u'-ta (wrapped up, rolled 

 inward), Baker. 

 This greenhouse species, of small dimensions, is a native of Zanzibar and 

 Cape Colony. Its oblong-spear-shaped fronds, Sin. to 4in. long, lin. to IJin. 

 broad, and three times divided nearly to the midrib, 

 are borne on tufted, wiry, erect, blackish stalks 2in. 

 to Sin. long and more or less scaly throughout. The 

 lower leaflets are opposite, broadly triangular, and cut 

 down into several broadly-triangular leafits, the upper 

 of which are divided into three lobes, while the lower 

 are cut down to the rachis below. The fronds are 

 of a leathery texture, pale green and smooth on both 

 surfaces, and the sori (spore masses), disposed in 

 a continuous, marginal line, are covered by a distinct, 

 pale, thin, transparent involucre. — Hooker, Species 

 Filicum, ii., p. 108. Nicholson, Dictionary of Gardening, 



lu., p. 



Ql. 



P. (AUosorus) longimuoronata— AU-os-o'-rus 



long-im-u-cro-na'-ta (long-pointed). This 

 synonymous with P. mucronata. 



is 



Fii. 23. Leaflet of Pellsea 



intramarginalis 



(nat. size). 



P. (AUosorus) marginata — AU-os-o'-rus ; mar-gin-a'-ta (edged). 

 Baker. 

 A stove species, of medium size, native of Tropical America, from Mexico 

 and Jamaica southward to Peru and the Argentine Territory. Its somewhat 

 triangular fi-onds, 4in. to Sin. long. Sin. to 6in. broad, borne on strong, erect, 

 polished stalks Sin. to 9in. long, of a chestnut-brown colour, and sUghtly scaly 

 towards the base, are three or four times divided nearly to the midrib ; the 



