the leaves between the angles are represented as quite entire, 
not crenated as in cur’s, and they are nearly so in the spe- 
cimen collected in Campeachy by Hovustroun himself, still 
preserved in the Banksian Herbarium; but in no other 
respect could we discoyer any difference ; in the figure by 
SPRENGEL, above quoted, the leaves are crenated, as in our 
plant. 
The Contrayerva roots of the shops are probably collected 
indifferently from various species, certainly from this, accord- 
ing to Houstroun, in Campeachy, where it is indigenous. 
Communicated by Messrs. Loppicrs and Sons, in whose 
stove for some seasons this plant came up spontaneously from 
the self-sown seeds, 
