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natural Family of Plants called Composite. 
Since the publication of Willdenow’s Species Plantarum very 
few alterations have been made in the genus Calea. 
In Persoon’s Synopsis two of the species are excluded ; namely, 
Calea scoparia, which, following Swartz, he has referred to Bac- 
charis; and Calea aspcra, adopted from Richard as a species of 
Melananthera. The additional species in the work referred to are 
C. cordifolia of Swartz, already noticed as a genuine Calea ; C. acu- 
leata and spectabilis of Labillardiere, which belong to Cassinia; 
and C. cordata , adopted from Loureiro, of w hose plant nothing is 
known except from the short description in Flora Cochinchinensis, 
which is only sufficient to render it probable that it neither belongs 
to Calea as I have proposed to limit it, nor to any of the genera 
hitherto confounded with it. 
M. Poiret, in the Supplement to the Botanical Dictionary of the 
Encyclopedic Methodique, has under the article Calea retained 
all the species of this genus given by Persoon; and also Calea 
aspera ; which, however, he has in a subsequent article correctly 
referred to Melananthera. 
Connected with the proper subject of this paper, I shall describe 
and add some observations on a plant lately sent from Brazil by 
Mr. Sellow; which, though not strictly referable to Compositae, 
probably belongs to a genus at present included in this family; and 
conclude with a few remarks on the structure and affinities of 
Brnnonia. 
I have named the Brazil plant 
Acicarpha spatiiulata. 
Herba annua ? glaberrima, ramosa, diffusa. Rami adscendentes, 
angulati. Folia sparsa, petiolata, exstipulata, spathulata mu- 
cronulo brevissimo, sesquiuncialia, crassiuscula ? glauca? sae- 
piffs integerrima; inferiora quandoque extra medium dentata. 
vol. xii. s Petioli 
