30. PELL.EA, §§ ALLUSOUUS. 147 



10. P. Skinneri, Ilk. ; st. 6-0 in, 1., stout, erect, straw-colour or pale-hrown, 

 naked or slightly fibrillose ; /r. 0-12 in. 1,, 4-8 in. br., deltoid, tripinnatifid ; 

 lower pinmv deltoid ; lowest pinnL 1-2 in. 1., 1 in. br., deltoid-acuniiiiate, cut 

 down neaily fo the raehis into broad oblont,'- aeuiiiiuate lobes; rac/(/.s' bliji;htly 

 toiiientose, Ixitli surfaces naked ; texture scarcely coriaceous ; veins iine, incon- 

 epicuous ; invol. narrow, membranous. — Ilk, Sp. 2.]). 141. ^.118. B. 



Hab. Guatemala ; discovered by Mr. Skinner ; and much finer specimens have recently 

 been gathered by Messrs, Salvin and Godman. 



11. P, riqida,\{k,', st. 4-0 in. 1., stout, erect, dark chesnut-brown, naked or 

 slightly scaly ; fr. 4-9 in, 1., 8-0 in. br,, deltoid, hi- or tripinnate ; lowest pinnoe 

 the largest, erect, patent, 8-4 in, 1,, subdeltoid ; pinnl. of the lower side larger 

 than the others ; ult. segm. linear-oblong, obtuse, decurrent at the base, ^-\ in. 1. 

 in the barren frond, H-2 lin. ijr, ; rachis naked or slightly scaly, both surfaces 

 naked or slightly hairy ; texture subcoriaceous ; veins close and hue ; sori \i\ a 

 continuous marginal line, the broad pale wrinkled invol. rolled down tightly over 

 it. — Ilk. Sp. 2. p, 144. Cheiloplecton, Fee. 



Hab. Mexico, Guatemala, and said to have been also found by M. Nee in Peru, 



§§ Allosorus, Presl. Texture coriaceous ; the veins not ferceptible ; the ultimate 

 segments of the frond at least twice as long as broad, often revolute at the margin ; 

 invol. broad, consjncuous. Sp. 12-32. 



* Frond not more than hipinnatelif cut. Sp. 12-21. 



12. P. (Alio.) amhigita, Baker ; st. 0-9 in. 1,, wiry, erect, polished, dark chesnut- 

 brown, naked ; //•. 4-0 in, 1,, 2-8 in. br., oblong, simply pinnate, or bipinnate 

 at the base ; pinnce-\\-2 in. 1., 1 lin. br., linear, erecto-patent, flexuose ; texture 

 subcoriaceous, brittle ; rachis and both surfaces naked, margin incurved ; invol. 

 distinct from it, paj)yraceous, brown, continuous, mapped out into a series of 

 roundish depressions, the two opposite edges interlacing by a marginal fringe, 

 and sometimes concealing the dark-coloured polished midrib. — Cheil., Metten. 

 Cheil. p. 49. Synochlamys ambigua, Fee, 8. Mem. t. 20. 



Hab, New Granada ; discovered by M. Schlim in 1852. 



13. P. (Alio,) atroj)urpurea. Link; s^, tufted, 3-4 in. 1., rigid, erect, more or 

 less tomentose ; fr. 4-12 in, 1,, 2-6 in. br,, varying from lanceolate and simply 

 pinnate to ovate-lanceolate, with deltoid pinnm 2-8 in, 1,, with several jt^zw?^/. on 

 each side, the latter nearly sessile, 1-2 in, 1., at most \ in. br., entire or sharply 

 auricled at one or both sides at the base ; texture coriaceous ; rachis tomentose 

 like the stipe ; both surfaces naked, except thecosta beneath ; veins hidden ; invol. 

 formed of the slightly altered incurved edge of the pinnules, at length nearly 

 hidden by the broad line of the fruit. — Ilk. Sp. 2. p. 189. P. glabella, Mett. 



Hab. N. America, from sub-arctic latitudes southward to Texas, the Ilocky Moun- 

 tains, and British Columbia ; Orizaba, Mexico, Bourgcau ; Andes of Mecoya, 8-10,000 ft., 

 Pcarce. 



14. P. (Alio.) pectiniformis. Baker ; rhizome stout, short-creeping ; st. 2-6 

 in, I., terete, ebeneous, naked or slightly scaly ; basal scales dense brown, fibril- 

 lose •,fr. lanceolate, \-\ ft, 1,, 2-3 in, br., mostly simply pinnate ; pinnoe narrow, 

 ligulate, 1 lin. br., entire, with revolute margins, blunt, base cordate, obscurely 

 stalked ; rachis rigid, strong ebeneous, clothed with adpressed linear membranous 

 scales ; texture rigidly coriaceous ; surfaces green, glabious ; veins immersed ; 

 inv. pale, firm, glabrous. — Pteris pectiniformis, Godet, Kuhn, Fil. Afr. p. 87« 

 Pelltca dura, edit. 1. ex parte. 



Hab. Natal, Angola, Mascaren Isles. 



