The original type of the genus is S. Helleri, which is 
readily distinguished from the others by its leaves, which 
are thin and light green, and stem being smooth, except 
a slight ciliation at the margin of the former. Its calyx is 
turbinate, and about twice as long as the ovarium. 
The subject of this article, S. guttata, is characterised by 
its oblong-lanceolate leaves, which taper into the footstalk, 
are covered with a velvety pubescence, and have a strikingly 
lucid surface. The calyx is campanulate or nearly cylin- 
drical, and at least thrice as long as the ovarium. The 
corolla is closely covered with livid purple dots. 
The third species, $. velutina, approaches the last, from 
which it differs in its leaves being oblong, with a cordate 
base, densely velvety, and quite opaque. The flowers are 
not dotted. 
The fourth, S. villosa, is twice the size of any of the 
others, and is covered all over, stem, leaves, and flowers, 
with a long shaggy hairiness. The flowers are a pale 
yellowish green, and not solitary, as in the three former 
species, but clustered in the axille of the leaves. The 
calyx is about the same length as the ovarium, and nearly 
5-parted. 
All these flower during the greater number of months, 
and require the same treatment. The three last were 
sent to the Horticultural Society in 1826 from Rio Janeiro, 
by “Mr. Chamberlain. The following are their specific 
characters :— : : 
S. Helleri (Nees); foliis glabris ciliatis, calycibus turbinatis ovario duplo 
longioribus. 
S. guttata (Nobis); foliis oblongo-lanceolatis basi attenuatis tomentosis 
lucidis, corollis guttatis, calycibus cylindrico-campanulatis ovario tripló 
longioribus. 
S. velutina (Nobis) ; foliis oblongis subcordatis velutinis, calycibus cylindrico- 
campanulatis ovario tripld longioribus. 
S. villosa (Nobis); caule foliisque villosis, calycibus 5-partitis ovarii longi- 
tudine, floribus aggregatis. 
J. L. 
