The species of Lycopodium of the American tropics 



Lucien Marcus Underwood and Francis Ernest Lloyd 





In 1900 we published a preliminary list of the West Indian 

 species of Lycopodium in connection with a revision of the spe- 

 cies of temperate North America.* During the few years that have 

 since elapsed, our knowledge of the tropical species has been 

 greatly extended, chiefly through the explorations that have been 

 made in various parts of the West Indies under the direction of the 

 New York Botanical Garden. The expeditions to Porto Rico by 

 Underwood and by Wilson, to St. Kitts by Britton and Cowell, to 

 Cuba, by Britton, Shafer, and Wilson, and by Underwood and 

 Earle, to Haiti by Nash, to Jamaica by Underwood and by Maxon 

 of the United States National Museum, and to Dominica by Lloyd 

 have all brought back an extensive array of material. This has 

 been amply supplemented by the Jenman collection purchased by 

 the Garden in 1903, which is specially rich in material from Ja- 

 maica, Grenada, Martinique, and Guiana. Other recent South 

 American material has been supplied through the rich collections 

 of H. H. Smith in the Santa Marta region of Colombia, and of 

 R. S. Williams in the Andean region of Bolivia. The latter col- 

 lection particularly has brought to light a number of very inter- 

 esting species. American collections are still lacking in good 

 representative material from Brazil, and there are occasional species 

 from other regions about which additional light is still greatly de- 

 sired. In order to place our present knowledge in an accessible 

 form, we present this second preliminary report on the species of 

 the West Indies and Mexico, and have included occasional species 

 from South America. The West Indian forms are now fairly well 

 limited and localized, yet it is not impossible or even unlikely that 

 still other species will be found in the archipelago when the higher 

 altitudes of the larger islands shall have been explored. The 

 Mexican and especially the Central American species are much 

 more obscure, and must await further exploration. The same is 



* Lloyd, F. E. & Underwood, L. M. A review of the species of Lycopodium 

 of North America. Bull. Torrey Club 27 : 147-168. 1900. 



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