240 



8. Pritchardia Seem. & Wendl. To this genus, which has 

 eight recognized species in the Pacific islands {P. pacifica Seem. 

 & Wendl. the type), Professor Beccari joins Colpothrinax Wrightii 

 Griseb. & Wendl. of Cuba. We do not believe that this dis- 

 position of the Cuban tree can be satisfactorily maintained, not- 

 withstanding the apparently slight generic differences shown by 

 the fruit. 



9. Rliapidophyllwn Wendl. consists wholly of R. Hystrix 

 (Fraser) Wendl. of the southeastern United States. 



10. Trithrinax Mart, consists of five species from southern 

 Brazil, eastern Bolivia, Paraguay, and the Argentine Republic. 



11. Acanthorhiza Wendl. Two species are recognized, one 

 from southern Mexico, the other from Panama, Costa Rica, and 

 Nicaragua. 



12. Hemithrinax Hook. f. consists wholly of H. compacta 

 (Griseb.) Hook. f. from Cuba, known only from its original col- 

 lection by Charles Wright. 



13. ThianaxS'K. This is probably the most difficult of the 

 American palm genera to understand, inasmuch as the foliage of 

 most species is very similar and the differences in flowers and 

 fruit are very slight. Professor Beccari accepts ten species, four 

 of which he describes as new from Cuba, and discusses three 

 dubious species. T. microcarpa Sarg., of Florida, T. keyensis 

 Sarg., of Florida, T. ponceana Cook, of Porto Rico, and T. baJia- 

 mensis Cook, of the Bahamas, I have studied in the field and 

 regard them as one ; Z". piinctidata Beccari, of Cuba, is very 

 closely related, if not to be included in this aggregate. T. tes- 

 sellata Beccari, from Jamaica (erroneously cited in Professor 

 Beccari's key to the species as from Cuba) seems very distinct. 

 T. parviflova Sw., of Jamaica, the type species, has very close con- 

 geners in T. jioridana Sarg., of Florida, and T. Wendlandiana, 

 of Cuba. Tlirinax excelsa Lodd., as described by Grisebach, 

 from Jamaica, is abundant on that island and distinct from T. 

 parviflova, to which it is doubtfully referred by Beccari. 



14. Coccothrinax'^z.v^. This genus, very distinct from Thrinax 

 by the grooved endosperm of the fruit, has as synonyms Tlirin- 

 couia Cook and TJirino-is Cook. Professor Beccari admits thir- 



