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The genus Dalea has been confounded with Psoralea, 
from which it differs essentially in its monadelphous stamens, 
and in the tube of these stamens bearing the ale and carina. 
It has a still nearer affinity with Petalostemon, in which the . 
petals are likewise adnate with the stamens, and in which, as. 
well as in the present genus, the leaves are furnished with 
glands, but, besides that the point of their insertion is diffe- 
rent, Petalostemon has but 5, not 10, stamens. » 
All the species of Dalea are natives of either North or 
South America: the present individual is indigenous to the 
latter country, where it was, if I mistake not, first. detected by 
HumsBoupt and BonrLanp. It is, I believe, still rare in | 
our gardens. ‘The figures here given were made from fine spe- 
cimens communicated to me by Mr Sueruerp of the Liver- 
pool Botanic Garden, in the month of September 1822. 
Fig. 1. Entire flower. Fig. 2. Claws of the petals. Fig. 3. Stamens and 
pistil, the petals being partly removed. Fig. 4. Anther. Fig. 5. Calyx, 
including the seed-vessel. Fig. 6. Seed-vessel, removed from the Calyx. 
Fig. 7. Seed. Fig. 8. Embryo.—All more or less magnified. 
