American Fern IJnournal 
Vol. 11 ‘ JANUARY-MARCH, 1921 Cone 
Notes on American Ferns—XVI.! 
WILLIAM R. MAXON. 
SELAGINELLA HuMIFUSA Van Eseltine. This name, 
recently given by Van Eseltine®’to a species of central 
and southern Florida allied to S. arenicola Underw., is, 
unfortunately, invalidated by S. humifusa Hieron., 
applied several years earlier to a plant from Borneo.* 
The Florida species may therefore be known as Selagi- 
nella floridana Maxon, the type being Nash 1449, from 
the vicinity of Eustis, Lake County, July 16-31, 1894. 
Selaginella floridanais known otherwise from specimens 
collected near Sanford, Orange County, in September, 
1902, by S. Rapp, and in the vicinity of Alapattah, 
Dade County, by A. A. Eaton. 
Lycopopium opscuruM L. This species, as L. den- 
droideum Michx., was reported from Sand Mountain, 
in Jackson and De Kalb counties, Alabama, by Mr. 
Graves in the Journat for July-Sept., 1920, upon 
specimens collected by himself. An earlier Alabama. 
collection, apparently never reported, is of material 
in the Mohr Herbarium (in the National Herbarium) 
collected in boggy open situations 7 miles from Men- 
tone, De Kalb County, October 13, 1900, by Miss Inez 
Loring. The specimens were oreauinably received by 
Dr. Mohr too late to permit listing this species in the 
Plant Life of Alabama. 
1Published by permission of the Secretary of the Smithsonian Institu- 
ae U. 8. Nat. agp ae 165. pl. 18. text fig. 65. 1918. 
*Hedwigia 51: 257. 
[Vol. 10, No. 4 of the dae pages 97-128, was issued Feb. ,7 1921.} 
1 
