corresponds with the Loasa nitida of Lamarck, figured by 
Jussieu in the Annales du Muséum ; but the representation 
there given of the scale of the nectary, with its appendage, is 
extremely incorrect ; and had it not been that the author says 
of the scale that it is like that of LZ. triloba (which is very si- 
milar indeed to the present), I should hardly have ventured 
upon making it the same. L. triloba and L. nitida, indeed, 
supposing the scale to be alike in both, approach so nearly to 
each other, that the only difference between them seems to be, 
that the upper leaves of the former are petiolate, the latter sessile. 
The L. tricolor of the Bot. Reg. I have quoted as a syno- 
nym doubtfully; but I cannot help expressing my opinion, that. 
it is probably the same as our present plant. It was received, as 
_ it would appear, about the same time, from the same country as 
produced Dr Sims’ and the accompanying individual, and seems. 
to differ only in the (usually) more deeply divided leaf, which has 
narrower segments, and in having three stigmas instead of one. 
Of this singular, and I may add beautiful genus, (for the 
fiowers are handsome both in hue and form), twelve species 
have been described, and most of them figured by Jussr£v, in 
the 5th volume of the Ann. du Mus. d Hist. Nat. Nearly 
all of these are natives of Peru and Chili; and we learn from — 
the Bot. Mag. that Mr LamBeErr possesses engravings of fif- 
_ teen species, chiefly new ones, which were prepared for the en-— 
suing volume of the fl. Peruv.: one alone, L. argemonoides, 
being found near Santa I'é de Bogota, and generally growing 
among the Cinchonas and Tree Ferns of these tropical regions. 
In the memoir by M. Jussreu above quoted, that learned 
botanist has separated this genus from the ONAGRARL (where, 
among the Genera Onagrariis affina, it was placed in the 
Genera Plantarum), and along with. Mentzelia, has establish- 
ed for it a new Order, LoasEa&. Most of the individuals are 
hispid and stinging, the stings usually resembling those of our 
nettles, with their poison-bag much swollen and reticulated * ; 
the sting itself being a clear transparent tube, through which 
the fluid may be distinctly seen to pass. 
Fig. 1. Flower. Fig. 2. The same, deprived of most of the petals and sta- 
mens, and of the nectary. Fig. 3. Back view of a scale of the nectary. 
Fig. 4. Froat view of the same. Fig. 5. One of the filaments from with- 
in the scale. Fig. 6. Stamen. Fig. 7. Pollen, when in a dry state. 
Fig. 8. Ditto, when moist. Fig. 9. Sting. Fig. 10. Hair, with its joints 
and bristles. Fig. 11. Germen cut through transversely. Fig. 12. Seed. 
Fig. 13. Section of the seed, shewing the Albumen and Embryo. Fig. 14. 
Embryo removed from the seed.—All more or less magnified. 
* It is a curious circumstance, that, in the month of July 1823, an unusually cold 
season, some individuals of the L. nitida, which were planted in the open border of our 
garden, had the poison-bags considerably larger, whiter, and filled with a much greater 
quantity of fluid, than those that were kept under the protection of a greenhouse. 
The whole plant, too, became considerably stronger. 
