Further differential characters might be enumerated, such as the short ligule and the flat petiole of _Sabal_. The inflorescence and seeds also afford differences, but these points are unnecessary for diagnosis, and their proper expression will require careful comparative study of the species of both genera, since _Sabal_ is not monotypic but includes at least two species from the Southern States and perhaps _S. Mexicana_ Martius. Guersent’s _S. Adansonii_, the first binomial species to which the name _Sabal_ was applied, is, to judge from the figure, the smaller of our species, while Jacquin’s _Corypha minor_ may be the larger. Both species were described from hothouse specimens and the plates give no details really adequate for identification, but if there are but two species to be considered there can be little doubt that Jacquin’s drawing represents the larger of the two forms commonly referred to _Sabal Adansonii_, since the leaves are nearly four feet long with the mesial divisions united somewhat less than half way up. The basal segments are represented, however, as diverging horizontally and not obliquely as is usual in the living plants in the greenhouses of the Department of Agriculture. Guersent maintained that he was dealing with the _Sabal_ which Adanson had in mind in naming the genus, and made his specific name in accordance with that fact, treating _Corypha minor_ Jacquin, _Corypha pumila_ Walter and _Chamaerops acaulis_ Michaux as synonyms. The relative merits of these names and of _Chamaerops glabra_ Miller, which Dr. Sargent (Silva, =10=: 38) has resurrected, are not likely to be easy of determination, but since the last was based on plants grown from seeds which came from Jamaica, it seems unwise to use it for United States species to which the description is inapplicable. Miller’s name may, however, replace _Sabal taurina_ Loddiges which was also founded on a stemless _Sabal_ supposed to come from Jamaica. The species of _Inodes_ are in a similar or even worse state of disorder. There is little use, for example, in transferring to the new genus the traditional name _umbraculifera_ which was based by Martius on the _Corypha umbraculifera_ of Jacquin, but not on Linnaeus’ species of the same name, which is a native of Ceylon. Present taxonomic methods forbid such generic transfers of misapplied names, so that the name =Inodes Blackburniana= (_Sabal Blackburniana_ Glazebrook, Gardener’s Mag. =5=: 52. 1829) should be used instead of the traditional _Sabal umbraculifera_ of the conservatories, though the identity and origin of the species still remain in doubt. =Inodes causiarum= sp. nov.