CATALOGUE. 311 



or less incised ; involucres sub-continuous or interrupted, scarcely altered 

 from the texture of the frond.— Sp. Fil. ii, p. 87, t. 110. 



Between Western Texas and New Mexico, C. Wright, Nos. 823 and 2128. Arizona, in several places, 

 Dr. Kathrock. This Fern has a rather slender creeping scaly rootstock, and the stalks not crowded together. 

 The dark color of the stalk and rachis extends along the midribs of the pinnse for about half their length. 

 The frond is nearly, if not quite, glabrous, and of a clear, bright-green color. 



Cheilanthes viscida, Davenport, (n. sp.). 



Stalks 3-5 inches high, wiry, blackish, shining, the base chaffy with 

 narrow crisped bright-ferruginous scales ; frond herbaceous, minutely gland- 

 ular and everywhere viscid, 3-5 inches long, narrowly oblong in outline, 

 pinnate with 4-6 distant pairs of nearly sessile deltoid bipinnatifid pinnae 

 5-6 lines wide and long ; segments toothed ; the minute herbaceous teeth 

 recurved, and each covering 1-3 sporangia. 



Collected in 1876 by Dr. Parry, probably near San Bernardino, California. This slender Fern much 

 resembles C. Wrightii, but has the fronds taller, more finely divided, and excessively viscid, and tho 

 involucre is represented only by the recurved teeth of the segments. Indeed, it might almost as properly 

 be considered a Notholcena, but its apparent affinities are with Cheilanthes Wrightii and tenuifolia. I 

 received specimens from Mr. Geo. E. Davenport, of Boston, with the MS. name here adopted. 



Cheilanthes microphylla, Swartz. 



Rootstock creeping, short; stalks clustered, dark-brown, glossy, but 

 rusty-pubescent along the upper side, 4-6 inches long ; frond as long as the 

 stalks, ovate-lanceolate in outline, twice or even thrice pinnate ; primary 

 pinnae numerous, lanceolate, the lowest ones usually largest and more del- 

 toid ; secondary ones oblong or deltoid-ovate, deeply incised, or again pin- 

 nate in large specimens ; texture rather firm ; both surfaces smooth or with 

 a very scanty pubescence ; involucres nearly unchanged from the texture 

 of the frond, interrupted or subcontinuous. — Synopsis Filicum, p. 127; 

 Hook. Sp Fil. ii, p. 84, t. 98 ; Hook. & Baker, Syn. Fil. p. 135. 



A common Fern in the West Indies and from Mexico to Ecuador and Peru. Specimens which I 

 must refer to this species were collected somewhere in New Mexico by the Botanists of the Mexican 

 Boundary Survey. It occurs in Florida, and seems to havo been collected also at the Hot Springs of 

 Arkansas by Dr. Engelmann. (See Kunze, in Am. Jour. Science, 1848, p. 87.) The New Mexican specimen 

 has a frond unusually broad at the base, nearly thrice pinnate, and comes nearer to the var. Moritziana 

 thaa to the narrower and less compound forms. 



Cheilanthes AIabamen§i§, Kunze. 



Rootstock "creeping," clothed with very slender delicate bright- 

 brown scales, which at the base of the polished black stalks pass into a 

 scanty ferruginous wool ; frond narrowly lanceolate, 2-8 inches long, 



