ALSO PHI LA. 



375 



lift, to 2ft. long ; the sessile (stalkless) pinnules (leaiits) are Bin. to 4in. 

 long, Jin. broad, strap -shaped, and cut clown to a narrow wing or to the 

 rachis (stalk of the leafy portion), which is chestnut- coloured and smooth. 

 The segments thus formed are ligulate (strap-shaped), blunt, toothed, nearly 

 sickle-shaped, and barely |in. broad, and the sori (spore masses) are disposed 

 on or close to their midrib. — Hooker, Synopsis Filicum, p. 460. 



A. senilis — sen-i'-lis (aged). Synonymous with A. paleolata. 



A. Sprucei — Spru'-ce-i (Spruce's), Hooker. 



This very handsome, stove Fern, native of Chimborazo, where it is found 

 at an elevation of 2500ft., although not really arborescent, is nevertheless of 

 large dimensions. Its fronds, of an almost leathery texture and smooth, are 

 fully 4ft. long : they are produced from a stem or trunk which is reduced 

 to a nearly globular rhizome (prostrate stem), and are borne on stout stipes 

 (stalks) equally 4ft. long, very spiny at the base, and densely clothed on 

 their whole length with scales of a rusty colour and of two different kinds — 

 some long, very slender and hair-like, and others large and lanceolate (spear- 

 shaped). The primary pinnaB (principal leaflets), 1ft. or more long, are 

 furnished with oblong pinnules (leafits) 2 Jin. to 3in. long and Jin. broad, 

 terminating in a tapering point, and deeply cut nearly to the midrib. The 

 lobes thus produced are sickle-shaped, pointed, entire, and have their margins 

 slightly reflexed (bent back). The sori (spore masses) occupy the entire 

 space between the midrib and the margin of the lobes. — Hooker, Synopsis 

 Filicum, p. 37. 



A. squamulata — squa-niul-a'-ta (slightly scaly). Synonymous with 

 A. comosa. 



A. SUbglandulosa — sub-glan-dul-o'-sa (somewhat glandular), Hanee. 



This stove species, native of Formosa, has fronds tripinnate (three times 

 divided to the midrib), and borne on stout stipes (stalks) densely clothed 

 at the base with long, flaccid, narrow scales of a light brown colour. The 

 lower pinnse (leaflets) are 1ft. long, and are furnished with spear-shaped 

 pinnules (leafits) which have their segments deeply pinnatifid (cut down 

 nearly to the midrib), and ciliated at the edge with glandular hairs. The 

 rachis (stalk of the leafy portion of the frond) is densely clothed with 



