(Reprinted from Bulletin of the Torrey Botanical Club, October, 1888.) 
An Enumeration of the Plants Collected by Dr. H. H. Rusby in South 
America. 1885-1886—III. 
PTERIDOPHYTA. 
Determined by Elizabeth G. Britton.* 
(I.)—Equiset^e. 
Eqiiisetum Bogotense , H.B.K., Sorata (2509). 
(ii.) —Lycopodiace^e. 
Lycopodium Saururus, Lam., Yungas (455). 
L. linifolium, L., Yungas (449). 
L. alopecuroides , L., Mapiri (457). 
L. aqualupianum , Spring, Yungas (458). 
L . cernuum , L., Yungas (447). 
L. clavatum , L., Unduavi (448). 
L. scariosum, Forst., var. Jussicei (Desv.), Baker, Yungas (451). 
(III.) —Selaginelle^e. 
Selaginella macrophylla , Spring, Sorata (456). 
5 . longicuspis , Baker (?). Possibly S', substipitata, Spring, but 
leaves of the upper plane less than one-half as long as those 
of the lower. Mapiri (461a). Beyond the recorded range of 
either. 
S. Breynii , Spring, Mapiri (461). Approaching in the auricled 
bases of the leaves, S. campylotis, A. Br. 
S. polycephala , Baker, Mapiri and Yungas (462). Young plants 
like Holton’s No. 82, Flora Neo-Granadina Quindiensis. 
S. Poeppigiana , Spring, Yungas (452); Unduavi (454). 
*In the determination of these plants I have been favored with exceptional 
advantages, for, in addition to the resources of the Columbia College Herbarium 
and Library, I have had access to Professor’s Eaton’s, at New Haven, and those at 
Kew. To Professor Eaton and Mr. Baker, for their kindly assistance, I hereby 
tender my hearty thanks. 
