PTERIS. 221 



attenuated at the base and more or less decurrent on the 

 rachis, segments lanceolate or linear-lanceolate sterile por- 

 tions serrated, basal veins mono-arcuate, tertiary areoles mar- 

 ginal, rachis and costse stramineous glossy. — Pi'esl, Del. Prag. 

 p. 183. Raddi, Fih BrasiL p. 48. /. 69 hu. A(/. Sp. Gen. 

 Pterid. jo. 61. Pt. appendiculata, KauJf. Enum. Fit. p. 187. 

 Pt. lata, Kaulf. {Presi). 



Hab. Brazil: shady woods about Rio, Gaudichaud, Rnddi, Gardner, n. 153 

 and 33, Macgillivray, n. 205, and Milne, Lndij Calcott, J. D. J looker. —The prin- 

 cipal distinguishing mark of this species is to be found in the decurrent base of 

 the pinnaj, especially in the upperpart of the frond, which gives a winged character 

 to the rachis. Pinnai 7-17 on one frond, G-8 inches long. 



102. Pt. (Litobrochia) spimiRfera, Schum.; frond 1-2 

 feet long pinnate glabrous, pinnee ])etiolate broad-lanceolate 

 acuminate pinnatifid lowest pair bipartite, segments lanceo- 

 lato-oblong obtuse toothed at the apex, basal veins subbiar- 

 cuate, tertiary areoles marginal, costules of the segments 

 with a series of areoles on each side, the rest of the veins 

 free, costse densely spinuliferous beneath rarely unarmed, 

 stipes and costa often ebeneous at the back. Ay. — Schuma- 

 cher, Beskr. Guin. Plant, p. 459. Ag. Sp. Gen. Pterid. p. 62. 



Hab. West Africa-. Guinea, Mortensen ; Congo, C/ir. Smith, in Herb. Banks; 

 Fernando Po, Dr. Vogel ; Cape Palmas, Ansell ; Sierra Leone, Barter, in Baikie's 

 Second Niger E^ijedition. — Frond 2 feet high, pinnated, dark-green. Stijjes cas- 

 taneous, posterior side sometimes ebeneous, mnriculated with retrorse spinules, 

 rachis on the anterior side rough. Costs with numerous spinules beneath, above 

 quite smooth. Pinnse sometimes a foot long, oblong-lanceolate, the lower pair 

 Ijifid or bipartite. Sterile segments very obtuse and oblong, entire, or with only 

 2-3 teeth at the apex ; fertile ones more lanceolate, ol)tuse, and slightly toothed 

 at the point. Our specimens from Vogel, Ansell, and Barter, exactly correspond 

 with the description of Schumacher's plant ; sometimes however the spines are 

 absent, and sometimes the colour of stipes and rachises is on the under side 

 purple, or black and glassy. The habit and form of the plant are exactly those 

 of Pt. quadriatirita and Pt. hiaurita, and the three can scarcely be distinguished 

 with certainty but by the venation, one being of the subgenus Eupteris. one of 

 Campteria, and one of Litobrochia. 



103. Pt. (Litobrochia) Kunzeana, Ag. ; fronds ample pin- 

 nate (below bipinnate ?), pinnec petiolate a span to a foot 

 long coriaceo-memliranaceous broad -lanceolate caudato-acu- 

 minate pinnatifid, segments approximate ovate or lanceolate 

 falcate acute or acuminated the apices sharply serrated with 

 rounded sinuses, basal veins bi-triarcuate, sori continuous at 

 the margins and sinuses of the segments the apices sterile. 

 (Tab. CXXXIX.)— J^. Sp. Gen. Pterid. p. 62. Pt. podo- 

 phylla, Kze. Si/n. PI. Peep. p. 75 [excl. syn.). Filix ramosa 

 arl)orescens et aculeata, Pima. Fit. p. 6. /. 5 and 11. 



