149 



ji. 131. Hort. Berul. t. 40. — V:\x.pallidhpes; stipites and rachis 

 pale-brown. Gymnogramme Peruviana, Desv. Kze. in Schk. 

 Fil. Stipp/. I p. 65. t. 32. Metten. Fit. Hort. Lips. p. 41. 

 Ceropteris, Lk. Allosorus farinosus, Kze. in Schk. Fil. 

 Suppl. ii. p. 5. t. 103. Gymnogramme ornithopteris, Kl. in 

 Linncea, xx. p. 413. Gymn. Guianensis, Kl. in Linncen, xx. 

 p. 413. 



Hab. Tropical America and Mexico. Samoa, S. Pacific, Brackenridge, Powel. 

 — Spite of the many authors who maintain this as a species distinct from G. ca- 

 lomelann.i, I confess myself to be quite i)uzzled to invent a good distinguishing 

 character, and am content if others can do so. As may l)e expected, too, the 

 pulverulent substance of the under side of the frond is liable to vary in colour 

 from pure white to sulphur and deep yellow or orange. G. cfirysophijlla, Klfs., may 

 thus be as likely to belong to G. tartarea as to G. calomelano.i. Much stress has 

 been laid l)y Ivlotzsch and others on the pale stipites and racliises of some states 

 of this, and lience the G. Peruviana, etc., have been formed ; but I possess speci- 

 mens witli quite intermediate characters, and with an ahnost intermediate form of 

 pinna between the most elongated and acuminated pinnules of G. calomelanus to 

 the usually obovate and very blunt one at the extremity of G. tartarea. G. Mar- 

 finsii, Bory and Kze. in Linnsea, xxiii. p. 255, and Metten. Hort. Fil. Lips., I 

 possess both from Guadeloupe and Jamaica, but can only look upon it as a state 

 of this of a rich golden-yellow beneath. 



49. G. (Ceropteris) trifoRata, Desv. ; caudex very short 

 suberect, stipites stout tufted (and as well as the rachis) 

 bright purple-castaneous glossy at the base and squarrose 

 with broad subulato-castaneous scales, fronds 2-3 and more 

 feet long oblongo-lanceolate elongated pinnate, pinnae nu- 

 merous lower ones petiolate 3-4 inches long subternate up- 

 per ones sessile simple and as well as the pinnules linear- 

 lanceolate serrulate (naked and then generally barren or) 

 when fertile clothed with a yellow or whitish powder beneath, 

 veins manifest copious dichotomously divided approximate 

 clothed with narrow lines of sori which follow the direction 

 of the veins and are at length confluent. — Desv. Joiirn. Bot. 

 I. p. 25. Hook. Gard. Ferris, t. 4. Acrostichum, Linn. Sp. 

 PL p. 1527. Sio. St/n. Fil.]). 13. Schk. Fil. p. 3. /. 3. and 

 t. 22. Willd. Sp. PL V. p. 119. Hemionitis. H.B.K. Nov. 

 Gen. Am. i. p. 4. Trismeria argentea, aurea, and microphylla, 

 Fee, Gen. Fil. p. 1G5. Phyllitis ramosa trifida, Sloanc, Jam. 

 i. L 45. f. 2. Lingua cervina trij)hylla, Plum. Fil. p. 123. /. 

 144. 



Hab. Jamaica and other of the West Indian islands, and in tropical S. Anierira 

 from Brazil aTid Ecuador, Guatemala. — The powdery substance clothing the under 

 side of the fertile fronds varies from white to full sulphur-colour. 



