155 
name coccinea of Rottboell, and another of more southerly range 
with very short style and no petals, for which the name /adfolia is 
taken up. The question yet in doubt, it seems to me, is whether 
the type of Linnaeus’ species was really a short-styled plant. The 
only figure cited is from Hans Sloane’s History of Jamaica,a work 
which I have been unable to examine. Dr. Britton has described 
still a third species.* A. Koehnei, which apparently combines the 
characters of the other two in having the petals of coccinea and 
the short style of /atfolia; but it is by no means certain that this 
floral character is constant. 
RHEXIA Fioripana Nash, Bull. Torr. Club, 2: 150. 1895. 
Another illustration of the northwestward extension of the 
Florida flora. Typical specimens of this Rhexia were collected at 
Biloxi on July 29 (No. 1096), and were easily distinguishable by 
their narrowly linear leaves and the dark olive-green hue of the 
whole plant from the abundance of R. Mariana growing in the 
immediate vicinity. 
RHEXIA LANCEOLATA Walt. Fl. Car. 129. 1788. 
A species accepted by Torrey and Gray, but reduced by Cog- 
niaux in his Monograph} to R. Mariana. The totally different 
color of the flowers, a feature of importance in this genus, as well 
as the glabrous calyx of FR. /anceolata, points to its specific valid- 
ity. Specimens were obtained at Ocean Springs (No. 1077). 
HyprocoTyLe Bonariensis Lam, Encycl. 3: 153. 1788. 
Mr. J. N. Rose furnishes me with the following note on this 
rare species: “ The collection of Hydrocotyle Bonariensis, a south- 
ern Mexican and South American species, in Mississippii is of in- 
terest. This species is entirely new to the United States, except 
that the variety Zerana occurs in a single locality in southern 
Texas. It belongs, of course, near //. umbellata, and may some- 
times be mistaken for that species. The inflorescence, however, 
is different, as H. umbéellata usually has a simple umbel, while /. 
Bonariensis has numerous elongated rays with a number of inter- 
rupted whorls of flowers.” 
* Bull. Torr, Club, 18: 271. 1891. 
+ Cogn, in DC. Mon. Phan. 7: 388. 1891. 
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