148 30. PELUEA, §§ ALLOSOKUS. 



15. P. (Alio.) ternifolia, Fee ; st, tufted, densely fibrillose at the base, 2-4 in. 1,, 

 strong, erect, dark chesnut-brown, naked, jjolished ; fr. 6-12 in. 1., 1-]^ in br., 

 linear-lanceolate, with 6 to 12 opposite pairs of pinnse, which are cleft down 

 nearly to the base into three linear mucronate rii^id segments with enrolled edues ; 

 texture coiiaceous ; rachis dark-coloured and polished like the stipe ; both surfaces 

 pale glaucous-green, naked; invol. formed out of the edge of the frond, rolled over 

 the sori till they attain full maturity. — Hk. Sp. 2. /?. 142. Fil. Exot. t. 15. 



Hab. Tropical America, especially in the Andes, from Texas, southward to Peru and 

 Chili ; Sandwich Islands. — Easily recognizable by its claw-like pinnse. 



16. P. (Alio.) mucronata, Eaton ; st. tufted, 2-4 in. I., strong, erect, naked, 

 dark-brown, polished ; fr. 3-6 in. 1., 1-8 in. br., deltoid, bipinnate ; piniice spread- 

 ing or erecto-patent, rigid, 1 in. or more 1., with several distant linear-oblong 

 pmnl. on each side, about j in. 1., with enrolled edges and a sharp mucronate 

 point ; rachis chesnut-brown, polished like the stipe ; texture coriaceous ; both 

 surfaces naked, pale glaucous-green ; invol. broad, coriaceous, rolled permanently 

 over the sori. — A. mucronatus, Eaton in Sill. Journ. July 1856. P. Wriglitiana, 

 Hk. Sp. 2. p. 142. t. 115. B. P. longimucronata, Hk. Sp. 2. p. 143. t. 116. A. 



Hab. California, New Mexico, and valley of the Kio Grande. 



17. P. (Alio.) involuta. Baker ; st. tufted, 2-3 in. 1., wiry, erect, blackish, 

 polished, more or less fibrillose throughout ; /;•. 3-4 in. 1., 1-1^ in. br., oblong- 

 lanceolate, tripinnatifid ; lower pinnce opposite, lanceolate-deltoid, cut down to 

 the rachis into several deltoid pinnl., the upper of which are ternately lobed, the 

 lower cut down to the rachis below ; texture coriaceous ; rachis blackish, naked, 

 polished ; both surfaces green r.nJ. naked ; sori continuous ; invol. distinct and 

 pale membranous. — Pteris, Sw. Cheil. profusa, Kimze. Hk. S/j. 2. p. 108. 



Hab. Zanguebar and Cape Colony. — C. cornuta, from Zeyher and Dr^ge, appears to 

 be safely referrible here ; but whether Ecklon's plant, described by Mettenius (Cheil. 

 No. 33), be the same is doubtful. 



18. P. (Alio.) aspera, Baker ; st. densely tufted, 2-3 in. 1., wiry, blackish, more 

 or less densely clothed with narrow scales and pale-brown tomentum ;/r. 4-6 in. 1., 

 about 1 in. br., narrowly ovate-lanceolate, bipinnate; lower pinnce distant, deltoid, 

 ^-f in. 1., ^ in. or more br., cut down to the rachis into a few linear or ovate- 

 oblong nearly entire pinnl.; texture subcoriaceous ; rachis scaly and tomentose 

 like the stipe ; both surfaces pale-green and scabrous, with short white liribtly 

 hairs ; sori copious, marginal, confluent. — Cheil., Hk. Sp. 2. p.lW.t. 108. A. 



Hab. New Mexico ; gathered by Mr. C. Wright. — Very like P. involuta in size and 

 habit, but easily recognizable by its scabrous hairy surface. 



19. P. (Alio.) alabamensis, Baker ; st, subtufted, 2-4 in. 1., wiry, polished, 

 blackish, fibrillose below and at the base, with copious fine woolly reddish-brown 

 scales ; fr. 4-8 in. 1., 1^-2 in. br., ovate-lanceolate, bi- or tripinnatifid ; pinnce 

 numerous, the lower ones opposite, about | in. 1., J in. br., lanceolate, cut down 

 to the rachis into numerous linear-oblong segm., most of which are entire, but 

 the lowest often again pinnatifid ; texture subcoriaceous ; raclds blackish, 

 polished ; both surfaces naked ; sori continuous along both edges of tiie pinnules ; 

 invol. pale-green, membranous. Cheil., Kimse. Hk. Sj), 2. p. 89. t. 103. B. 

 Ji'z. F. t. 90. 



Hab. Alabama, Georgia, and Tenessee. 



20. P. (Alio.) intraniarginalis, J.Sm. ; st. tufted, 3-6 in. ]., erect, dark chesnut- 

 brown, polished, slightly fibrillose below; fr. 6-12 in. ]., 2-4 in. br., ovate- 

 lanceolate, bipinnatifid ; pinnce opposite, lanceolate, 2-3 in. 1., 1 in. br., cut down 

 nearly to the rachis into long Mne&x-ohloug ptinnl. ; rachis polished like the stipe ; 



