| "Von
Schmeling" (1967) (3), who undertook studies of the
Stevia both in Paraguay and Brazil, has stated that the
Ka'a He'ê can be found mainly in Paraguay where it
grows in small areas of difficult access. From the Monday
in the South up to the heights of the Amambay mountain range
in the North, thus covering the San Pedro and Yhú
zone and the proximity of the Jejuí Guazú.
According
to Shock (1982) (4) the natural habitat of the Stevia can
be found in the Northeast of Paraguay. A collection of plants,
of spontaneous growth, was undertaken by the author in the
vicinity of where the Ypane River starts, in the Province
of Amambay, an area that is situated at 200 metres above
sea level.
According
to studies undertaken by Sumida (1975) (5), a more precise
region can be found between Latitude 22º and 24º
South and Longitude 55º and 56º West which encompass
the Amambay mountain range.
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