PELLsEA. 



51 



chestnut-brown colour, its narrowly spear-shaped fronds, which are 3in. to 

 9in. long, lin. to ljin. broad, and only once divided to the midrib, bearing 

 from twelve to eighteen pairs of slightly -stalked leaflets. The leaflets are 

 broader in the barren than in the fertile state, and vary in shape from 

 narrowly -oblong and entire, to auricled at one or both sides at the base, or 

 cut down nearly to the midrib in the lower part into oblong lobes, of a soft, 

 papery texture, and naked on both surfaces. The involucre, which is similar 

 in colour and texture to the frond, is broad and much wrinkled. — Hooker, 

 Species Filicum, ii., p. 140. Hooker and Greville, Icones Filicum, t. 116. 



P. (Allosorus) Barklyse— All-os-o'-rus ; Bark'-ly-a3 (Lady Barkly's), Baker. 



Probably the most vigorous of the whole genus, this stove species, native 

 of the Seychelles, where it was found by Lady Barkly and also by Dr. Kirk, 

 has fronds 1ft. or more in length, 9in. broad, deltoid, and quadripinnatifid 

 (in shape of the Greek delta, A, and four times divided half-way to the 

 midrib) ; they are borne on strong, upright, naked, dark brown, polished 

 stalks 1ft. to lfft. long. The lowest leaflets, 6in. to Sin. long, are almost 

 deltoid ; their pinnules (leafits) are largest on the lower side, and are 

 furnished on each side with segments which are cut down to the rachis (stalk) 

 into numerous narrow divisions only Jin. long. The texture is leathery, and 

 the rachis and both surfaces are naked. The sori (spore masses) are disposed 

 in a continuous line along the opposite edges of the gradually-narrowing 

 segments, so that the broad, pale brown covering, of a thin and transparent 

 nature, usually nearly reaches the tip. — Hooker, Synopsis Filicum, p. 151. 



P. (Allosorus) bella— All-os-o'-rus ; bel'-la (handsome), Baker. 



A greenhouse species, native of California, with narrow, bipinnate fronds, 

 5in. to 6in. long, borne on naked, black stalks 3in. long. The leaflets, about 

 Jin. long, egg-shaped, and stalkless, are divided into four or six narrow- 

 oblong leafits : these are toothed, rounded at the base, of a leathery texture, 

 dull green on both surfaces, and have their edges strongly revolute — Hooker, 

 Synopsis Filicum, p. 477. Nicholson, Dictionary of Gardening, hi., p. 66. 



P. (Allosorus) BoiYini— All-os-o'-rus • Boi-vi'-ni (Boivin's), Hooker. 



This stove species, native of Madagascar, Mauritius, Macalisberg, Ceylon, 

 and the Neilgherries, where it occurs at elevations varying between 3000ft. 



b 2 



