4G4 PROCEEDINGS OF THE AMERICAN ACADEMY 



Cheilanthes Coopers, D. C. Eaton. Barranca, in shaded pla- 

 ces on earth and among rocks. (78.) — These specimens have larger, 

 more decompound, and much more pilose fronds than the Californian 

 plant, but the texture is the same, and the pilosity consists of the same 

 " nearly white articulated often gland-tipped and viscid hairs." In 

 spite of the temptation to describe a new species, I am persuaded that 

 this is only the larger and more fully developed form of C. Cooperce. 



Cheilanthes viscosa, Link. Guadalajara, on the shaded side 

 of an embankment of earth ; July. (292.) 



Cheilanthes myriophylla, Desv. Guadalajara, with the last 

 (291), and on embankments among bushes ; September. (494.) Also 

 Rio Blanco, in masses on exposed rocks in deep canons ; July. (58.) 



Cheilanthes Palmeri, D. C. Eaton, n. sp. Stalks densely clus- 

 tered on a short rootstock, 4 to 6 inches long, bearing a few broad 

 thin scales, and more or less pubescent, like all the rhachises, with 

 soft many-jointed hairs ; fronds 8 to 9 inches long, two thirds as broad, 

 ovate, pointed, herbaceous in texture, above green and puberulent, 

 beneath sparingly ceraceous with yellow globules, bipinnate ; lowest 

 pair of pinna? not longer than the second ; pinnules oblong-lanceolate, 

 inferior ones longest, the larger ones pinnately cut into 6 or 7 oblong 

 or rounded lateral lobes on each side, and a larger subcaudate terminal 

 one ; involucres narrow, very delicate, subcontinuous. Guadalajara, 

 on a shady bank in a deep cafion ; July. (223.) — This fine Aleu- 

 ropteris is very different from any form of C. farmosa, in that it is 

 a larger plant, quite herbaceous in texture, softly pubescent every- 

 where except on the lower surface, and has the pinna? and pinnules 

 as decidedly caudate as those of the common forms of Pteris aquilina. 

 With the large plant came a smaller and younger one, having the 

 divisions less plainly caudate, but with the same texture, pubescence, 

 and ceraceous powder. 



Adiantum convolutum, Fournier. Rio Blanco, under bushes in 

 shady ravines. (762.) — The mature fronds are all sterile, and have 

 very much the appearance of A. emarginatum, but the pinnules are 

 very obscurely denticulate. There is a little greenish spot in the 

 axils of the branches of these specimens, which I have not seen in 

 the Californian sj^ecies. A single very immature frond shows the 

 transversely oblong involucres which belong to both species, but not 

 to A. glaucophyllam, Hooker, of which Fournier's name was made a 

 synonym by Keyserling. Fendler's no. 68 from Venezuela seems to 

 be good A. convolutum, and 238 Ghiesbreght from Chiapas is typical 

 A. glaucophyllum. 



