ASPIDIUM, ^ POLYSTICHllVf. 9 



Eloi), in the south. Eastward we possess it from Daviiria ( Tnrczavinov), and 

 a decided specimen of the species, gathered by Jacquemoiit in N. \V. India, among 

 Birch, on high mountains, at Pye Pundo. In the New World, the oidy locali- 

 ties recorded are, Michigan, LI. Slates, and Lake Superior {Dr. Asa Gra;/) ; East 

 side of Rocky Mountains. B. N. America, ajiparently rare, Drmnmond ; and 1 have 

 recently received, from British Columbia, splendid specimens 2 feet long, gathered 

 by Dr. I.yall, of the Oregon Boundary Commission, at the Cascade Mountains, 

 49'' n. lat., at 5000-COOO ft. elev. above the sea. — This species is the least variable 

 of all the Polystichnms. 



7. A. (Polystichum) mucroimtum, Sw. ; caudex short thick, 

 stipites .3 inches to a span long densely paleaceous with long 

 lanceolate fulvous scales mixed with equally long suhulate 

 ones, those at the base intense ebeneous-black, rachis also 

 stout straight densely setoso-paleaceous, fronds 1-H inch 

 long lanceolate coriaceous attenuated at both extremities 

 densely crowded with horizontal pinnae 1-H inch long 

 petiolate lanceolato-falcate mucronate truncated and sharply 

 auriculate and mucronate at the base alcove, the margins 

 nearly entire or obtusely serrated often villous beneath, sori 

 numerous in two approximate series, involucres firm, gene- 

 rally black with a deep central depression. (Tab. CCXVI.) 

 —Siv. Syn. Fil. t. 43. WiUd. Sp. PL v. p. 225. Schk. Fit. 

 p. .30. t. 29 C. Griseb. PI. Carib. p. 137. Metten. Aspid. p. 

 41. P. falcatum, Fee, Gen. p. 2']9'^ Polypodium, Siv. Fil. 

 hid. Occ. iii. p. 1649. Shane, Jain. i. p. 82. t. 36./. 4, 5. 



Ilab. Jamaica, Swarf z, Bancroft, Wiles, March, Wilson, Purdie ; Port Royal 

 Mo\\niA\ns,Hartweg,n. 1584. ^i. Dommgo {Mettenius). Guadeloupe (Grweiac/i). 

 — A well-marked species among the truly pinnated group of Polysdchum, recog- 

 nized by the stout and very strict stipites, with their dense clotliing of two or indeed 

 three kinds of scales, the copious setaceo-paleaceous rachis, pinnai villous beneath, 

 and the singular form and colour of the involucres. 



8. A. (Polystichum) acrostichoides, Sw. ; caudex short 

 stout or nearly so densely paleaceous, sti})ites a span long 

 and as well as the rachis stramineous more or less paleace- 

 ous, fronds 1^ inch and more long subcoriaceous bright 

 green, pinn£C horizontal rather distant petiolate 2-3 inches 

 long straight or subfalcate, from a broad ol)liquely cuncated 

 base truncated and sharply auricled above oblong acute mu- 

 cronate, serratures set()so-j)inulose, fertile ])inna3 occupying 

 more or less of the upper and contracted portion of the 

 frond reduced in size from ^-1 i"ch long of the same shape 

 as the sterile ones, sori in 2-4 rows near the costa, even- 

 tually confluent and covering the whole back of the pinnae. 

 — Sw. Syn. Fil. p. 44. Willd. Sp. PL v. p. 225. Aspid. auri- 

 culatum, Schk. Fil. ;;. 31 . t. 30. Nephrodium acrostichoides, 



VOL. IV. C 



