I 



228 



Mts 



1886. 



No. 1446. — Gymnogramme leptophylla, Desv. Damp, mossy 

 grots, cliffs of river canon, near Guerrero, September, 1887- 

 Seedling plants of this exceedingly delicate little annual fern, 



but most of them quite well fruited. 



No. 1 1 79. — Gymnogramme pilosa^ Mart. & Gal. Walls of canons, 



Sierra Madre, October, 1887. 



The striking external resemblance of the specimens to some 

 of my Phegopteris reptans came very near misleading me, and 

 I am indebted to the kindness of Prof. Eaton for setting me right. 



I 



% 



i 



T ■ 



C. Parishii, their nearest congener, and the only other American 

 member of the group to which they belong. The condition of 

 my eyes, however, has been such as to prevent my making the 

 necessary microscopical analysis in the only time I have had to 

 give to such work, and I am obliged to content myself with this 



general description for the present. 



The same cause has delayed, and may prevent altogether, 

 my intended elucidation of the Myriophylla-Fe^idleri section of 

 Cheilanthes^ for which I have ample material. | 



Nos. 829-1169. — Cheilanthes myriopkylla, Desv., van elegans, 

 Hooker. Cold cliffs, Mts. near Chihuahua (829), October, 

 1886. Ledges, Chapultepec (1169), May, 1887. 

 Specimens unusually large and fine. It is doubtful if such 

 beautiful specimens as some of those from the Chihuahua moun- 

 tains were ever before collected in a state of nature. Fronds 16 

 inches tall, 3 inches broad, and sub-divided four and even five 

 times into innumerable tiny pyriform segments, half hidden by 

 the delicately ciliated elegant scales and tomentum remind one 

 of the superb plants sometimes seen at exhibitions. It is not un- 

 likely that similar specimens suggested to Desvaux his exceed- 

 ingly appropriate name, and led Fotirnier to keep this fern apart 

 from C. myriophylla as a distinct species. I have elsewhere 

 given my reasons for adopting Hooker's disposition of the two 

 ferns, but specimens such as these of Mr. Pringle justify retain- 

 ing the present one as a good variety. 



No. 826. — Cheilanthes vtscosa, Link. Base of rocks, cool slopes, 



