245 
are described. The genus was critically studied in the field and 
‘herbarium by Mr. Wm. H. Leggett for more than ten years prior 
to his death in 1882, but he published little concerning it, con- 
tenting himself for the most part with assigning provisional names 
to the forms which he thought should be maintained as species, 
and building up an immense collection of them from all parts 
of the country. From my intimate relations with Mr. Leggett I 
naturally took much interest in the plants, and upon his death all 
his material came into my possession. We had together pored _ 
Over Rafinesque’s monograph, endeavoring to determine which of 
his names belonged to the forms we could recognize as distinct, 
and had come to the conclusion that, unless the type specimens 
could be found, there could be no certainty in using any of them. 
I have, therefore, endeavored in recent years to ascertain if these 
types are in existence, but I have been quite unable to find in any 
of the herbaria of Europe or America a single authentic Lechea 
of Rafinesque. Durand’s herbarium at the Jardin des Plantes, 
Paris, contains many of Rafinesque’s plants, and the Delessert her- 
barium at Geneva many more, but I could find none of the 
Lecheas. Dr. Torrey had a good deal of material from him, but 
nothing of the genus. The collections of the Botanical Garden at 
Palermo, Italy, where some of Rafinesque’s material was doubt- 
less deposited, were burned gome years ago, as Dr. Geo. G. Ken- 
nedy ascertained for me on his recent trip to the Mediterranean. 
Still Rafinesque expressly remarks that he had specimens of all 
his described species, and they may still turn up somewhere. If 
they do, some modifications of the names adopted in this paper 
Will doubtless become necessary. : 
The Species so closely resemble each other that the brief char- 
“cterizations of Linnzus, Michaux and Rafinesque are altogether 
inadequate to distinguish them, and I have been compelled to ex- 
amine the type specimens in order to understand what authors 
have had in hand and reject the names of Rafinesque on account of 
a inability to correlate them with the species recognized by 
~“ssett. This paper is, then, essentially based on the examina- ik 
Hon of type specimens. The results of Leggett’s study of Rafin- 
“sque’s monograph may be found by those interested in the Oe 
LETIN, as above cited. eae: | 
