338 BOTANY. 



Oregou to Lake Winnipeg, Wyoming Territory, and Lake Superior. Utah, Colorado, and Arizona, 

 but not sent from California. This and the last have a continuous (not jointed! stalk, such as is found 

 in IV. obtuaa anil its immediate allies, but the indusium is rather that of IF. Ilrensis, though very much 

 reduced. Of the Texan plant (C. Wright, Nos. 830 and 2120), doubtfully referred to W. obtusa, I have 

 as yet seen no specimens in a condition for satisfactory examination. Sir W. J. Hooker had placed his 

 specimens in the same cover with W. Peruviana, and that species is now considered a var. of W. oblnsa 

 by Mr. Baker. 



suborder. SCHIZiEACE^E. 



XVI. ANEIMIA. Swartz. 



Sporangia ovate, sessile, opening longitudinally, furnished with a trans- 

 verse apical complete operculiform ring, placed in two rows on the back of 

 the very narrow branchlets of the two long-stalked panicled lower branches 

 of a pinnately divided frond, the fertile branches in a few species entirely 

 distinct from the sterile frond. Veins free or anastomosing. — A genus of 

 about twenty-seven species, none of them large Ferns, mostly South Ameri- 

 can, one being South African, and two coming within the borders of the 

 United States. 



AnciigGia Blexicana, Klotzsck. 



Rootstock creeping, densely covered with narrow subulate blackish 

 chaff; fronds scattered, on slender stalks, pinnate; the two lower branches 

 fertile, long-stalked, glanclular-jmberulent, bipinnate with densely clustered 

 fructification ; the rest of the frond like the sterile ones, deltoid-ovate, 

 simply pinnate ; pinnse about six pairs and a rather large terminal odd one, 

 short-stalked, broadly ovate-lanceolate from a rounded or slightly cordate 

 base, sub- coriaceous, smooth and somewhat glossy ; midrib very distinct ; 

 veins free, oblique, parallel, closely placed, once or twice forked, the vein- 

 lets running out into fine serratures. — Linnsea, xviii, p. 526. Kunze, Die 

 Farrnk. ii, p. 75, t. 131. Hooker, Ic. PI. x, t. 988. 



Western Texas, Lindheimer, Wright. Also in various parts of Mexico. Plant a foot or eighteen 

 inches high, the common stalk fully half of this height, smooth, except for a few scales near the base. 

 The pinnae are 2-2J inches long and about one-third as broad, sub-coriaceous in texture, and fiuely 

 striated by the slightly raised veinlets. A. adiantifolia, Swartz, with a sub-tripinuate sterile segment, 

 occurs in Florida, and is common in the West Indies and Tropical America. 



