pinnate, primary pinnee mostly opposite, their lowest inferior 

 pinntc elongated and deflexed, pinnules linear-oblong broader 

 and crenate or lobulate in the sterile plant (and confluent) 

 narrower and more or less elongated and linear in the fertile, 

 terminal pinnule elongated subcaudate, involucres occupying 

 the entire length of all the pinnules meeting at the back (as 

 in Or UP to gramme) downy fringed and waved at the margin, 

 capsules large, stipites and main rachis black rigid, partial 

 rachises winged. (Tab. CXIX. B.) — Allosorus decompositus. 

 Mart, et Gal. FiL Mex. p. 48. t. 10./. 2. Allosorus angusti- 

 folius, Pr.y according to Liebm. FiL Mex. p. 67, and Ch. an- 

 gustifolia, H.B.K. Nov. Gen. Am. u p.2l, which Kunze quotes 

 under his Onychium angustifolium {see p. 123 of this volume). 



Hab. Mexico, Pacific side, Beechey ; Western Cordillera of Oaxaca, elev. 4500- 

 6500 feet, Martens and Galeotti, " n. G3G2," Liehmann; Sierra San Pedro, No- 

 lasco, etc., Jurgensen; Sierra Madre, N. W. Mexico, Seemann, Dr. Coulter, n. 

 1687. Tovar of Venezuela, Fencller, Plant. Venez. Fit. n. 90. Guatemala, Skin- 

 ner. — This plant has but slight affinity with Cheilanthes cuneata* (p. 107), Link, 

 and Kze. Fil. Suppl. t. 36, much more with Cheilanthes marginata,-\ H.B.K. 

 (p. 105) ; but it is very distinct in the generally larger size, narrower and longer 

 pinnules, the caudate terminal one, and especially the continuous uniform invo- 

 lucres. Some of the lesser fertile pinnules have a near resemblance to those of 

 Cryptogramme crispa, Br., but the ramification is more regularly pinnate, and 

 the barren fronds scarcely differ from the fertile fronds, except in the greater 

 breadth of the divisions and in being less compoundly pinnated. Martens and 

 Galeotti's figure fairly represents the plant of the natural size, but the fertile 

 pinnules are very incoiTect, especially the involucres. Our figure represents the 

 finest of our specimens, for they vary much in size. 



33. P. hirsuta, Hook.; subspithameous, caudex creeping 

 thick clothed with dense subulate scales, frond rigid deltoid 

 closely tripinnate below 4-pinnate, primary divisions opposite 



* By an unaccountable error at our p. 108, Allosorus pulchellus, Mart, et Gal., 

 is referred to this species : tliat synonym should be erased. 



f We have said, under the list of " dubious species," that Cheilanthes crenu- 

 lata. Link (a Mexican species), is referred by Martens and Galeotti to Allosorus 

 ciliatus, Pr., which is the same as our Cheilanthes marginata, II.B.K., p. 105. 

 Mettenius however retains it as a good species in his recent important work, 

 ' Filices Hort. Bot. Lips.,' with the following character : — " Rhizoma repcns ; 

 petiolus 2-3" longus, ebeneo-fuscus denique glaberrimus ; lamina 6-8" longa, 

 coriacea, glabra, tripinnatisecta; segmenta primaria oblique ovata; secundaria 

 deorsum aucta, una cum tertiariis ala angusta viridi confluentia ; tertiaria sub- 

 petiolata, linearia, obtusa, infima tripartita, superiora indivisa ; omnia leviter cre- 

 nata. Nervi simplices, apice incrassato, sinuni crenarum attingentes et soriferi ; 

 sori distinct! ; margo indusiiformis continuus, membranaceus, rigidiusculus, trans- 

 verse plicatus, supra soros in crenas expansus ; margines utriusque lateris ad cos- 

 tam connivcntcs." — He quotes as synonyms Allosorus ccespilosus, Pr., and Kze. in 

 Linnaa, xxiii. p. 218, Cheilanthes crenulata, Link. 1 have seen no authentic spe- 

 cimen of this plant. It is placed by Mettenius next to C. marginata. 



