150 PELL^A. 



cordatis, hie imprimis rachi scandente." It evidently belongs to the same na- 

 tural group as they, but is smaller in all its parts ; the pinnules are sessile (ex- 

 cept sometimes the terminal ones), almost invariably elliptical in form, not cor- 

 date at the base, turning of a very dark colour, almost black, when dry. The 

 stipes and rachises partake more of a purplish hue, and they have often a whitish 

 bloom upon them. I have never seen specimens corresponding with this species 

 from Mexico, Columbia, and Peru : it seems confined to the drier countries of 

 California, Chili, and the Cape of Good Hope ! in the latter country, 1 apprehend, 

 being very rare. Kunze's figure in the Analecta Pteridogr. is a good representa- 

 tion of the species. 



29. P. pulchella, Fee ; roots csRspitose, caudex none, plants 

 densely tufted small scarcely a span high, fronds 3-4 inches 

 long ovate-oblong bi-tripinnate, pinnules small glabrous sub- 

 coriaceous cordato- or ovato-elliptical petiolulate glabrous 

 very obtuse the margins reflexed, the petiolules sometimes 

 rather long very slender, stipites scaly oidy at the very base 

 and rachises everywhere ebeneous-black glabrous and glossy. 

 — Fee, Gen. Fil. jJ. 129. AUosorus pulchellus. Mart, et Gal. 

 Syn. Fil, Mex. p. 47. t. 10. y. 1. AUosorus formosus, Liebm. 

 Fil. Mex. p. 68. 



Hab. High mountain regions of Mexico, elev. 7-8000 feet, gi-owing in tufts 

 from the fissures of rocks south of Sola, Martens anil Galeotti. Oaxaca, Lieb- 

 mann. Rocks near Ciudad Real, Chiapas, Linden, n. 1546. In Monte San Fe- 

 lipe, Andrieiix, n. 42. Between Western Texas and El Paso, New Mexico, Mr. 

 Chas. Wright, n. 824. Lofty Andes of Peru, Mr. M'Lean. — This again, in the 

 nature and character of its pinnules, has considerable affinity with our last spe- 

 cies, but in them only. They are smaller and more cordate at the base, and are 

 borne on rather long petiolules. In some pinnules the sori are so exposed as to 

 represent a Nothochlmia, in others the margin forms a very distinct involucre. 

 The tufted fronds, glossy ebeneous stipites and rachises, are very peculiar. 1 

 possess no authentic specimens of this from the authors, but I cannot doubt that 

 the specimens here adduced are identical with the AUosorus pulchellus of Martens 

 and Galeotti. Liebmann changed the name of AUosorus pulchellus to AUosorus 

 formosus, because there was an AUosorus pulchellus of Boiy, but that is now re- 

 ferred to Cheilanthes. 



30. P. densa, Hook. ; small, tufted, caudex short thick 

 scarcely creeping, fronds deltoid rather firm glabrous palish 

 green tripinnate, pinnules sessile or shortly petiolulate linear- 

 oblong acute or even mucronate tapering at the base the 

 margins a little waved, sori copious broad continuous almost 

 to the apex, involucres intramarginal nearly meeting at the 

 costa close-pressed membranaceous subcrenate at the edge, 

 stipites glabrous glossy pale chestnut-colour, rachises and 

 petioles herbaceous compressed. (Tab. CXXV. B.) — Ony- 

 chium densum, Brackenridge, Fil. of U. S. Explor. Exp. p. 

 120. t. 13./. 2. 



Hab. N. W. America. Grass Valley, California, Dr. J. M. Uigelow. Oregon, 



