88 SCHOMBURGK'S GUIANA PLANTS. 
gradatim decrescentia, nec minora omnia postica ut in Swart- 
ziis plerisque, sed plura inter majora antice inserta. 
In all the above species the calyx is globular, coriaceous, 
bursting irregularly into four reflexed valves of which one i 
often bifid, the ovary is stipitate, and ends gradually in 
style sometimes very long, sometimes very short and incurved, 
but not suddenly deflected, the petal and larger stamina are 
always present, which several characters taken together ap- 
pear to me better to distinguish the section Possira, than the 
sole reliance on the presence of the petal. — : 
Besides the above eight species, I should refer to Possira 
the S. simplicifolia, (Willd.), with which I should join 5. 
ochnacea, (DC.) judging from a West Indian specimen in fruit 
precisely similar to the figure in his Mémoires sur les Legu- 
mineuses ; S. dodecandra, (Willd.); S. elegans, (Schott), which 
is Gardner's n. 358, a very variable plant in the size of the 
petal, and the same as S. pulchra, (Vogel), and Mimosa tri- 
phylla, (Vell. Fl. Flum. v, X1. t. 22) ; S. grandiflora, ( Willd.) 
to which Vogel is right in referring S. triphylla, B. grandi- 
Jora, (of Raddi), and which is also the Mimosa crocea, (Vell. 
Fl. Flum. v. XL t. 17); S. Langsdorffii, (Raddi), of which 
S. Brasiliensis, (Vogel), and Mimosa pulchra. (Vell. Fl. Flum. 
v. XL t. 18.) are synonyms; S. aptera, (DC.) if I have cor- 
rectly so determined a Brazilian specimen from the Peters 
burgh Academy ; and S. tomentosa, (DC.) or Aublet’s Robi- 
nia Panacoco. 
I have not seen S. myrtifolia, (Sm.), S. brachystachya, (DC. 
S. robiniefolia, ( Willd.), S. macrophylla, (Willd.), or S. acumi- 
nata, (Willd.), the three last described by Vogel, (Linnea, 
XI. p. 171—173); but from the characters given I have no 
doubt they all belong to Possira. is 
—. S. longifolia (DC.); of which I have seen a Cayenne 
specimen in the Herbarium of the Paris Museum, must cer- 
 tainly be removed, as conjectured by De Candolle. I fin 
the corolla pentapetalous and regularly papilionaceous: 
which character, with the others pointed out by De Candolle, 
