anatomia do lenho e dendrocronologia de lianas da famÃlia ...
anatomia do lenho e dendrocronologia de lianas da famÃlia ...
anatomia do lenho e dendrocronologia de lianas da famÃlia ...
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48<br />
RESULTS<br />
GENUS SENEGALIA – MIMOSOIDEAE<br />
Senegalia grandistipula (Benth.) Seigler & Ebinger shows cambial variant lobed stem given<br />
to stem the appearance of square and growth rings boun<strong>da</strong>ries of sporadic occurrence (Figure<br />
1A, 2A). The distinctness in microscopic view is possible by fibrous zone and semi-ringporous,<br />
in some portions of stem. With less inci<strong>de</strong>nce radially flattened latewood cells and by<br />
pith flecks and traumatic canals. The macroscopic and microscopic observations provi<strong>de</strong><br />
distinction of growth rings boun<strong>da</strong>ries, but macroscopic view facilities the <strong>de</strong>tection of semiring<br />
porosity.<br />
Senegalia lacerans (Benth.) Seigler & Ebinger shows cambial variant xylem furrowed and<br />
growth rings boun<strong>da</strong>ries of sporadic occurrence, allowing the observation in some portions of<br />
the samples (Figure 1C, 2B). The distinctness in microscopic view is possible by semi-ringporous;<br />
fibrous zone; marginal parenchyma. With less frequency, radially flattened latewood<br />
cells, pith flecks and traumatic canals. The macroscopic and microscopic observations provi<strong>de</strong><br />
distinction of growth rings boun<strong>da</strong>ries.<br />
Senegalia martiusiana (Steud.) Seigler & Ebinger shows cambial variant lobed stem, with<br />
cylindrical lobes and growth rings boun<strong>da</strong>ries of sporadic occurrence, allowing the<br />
observation in some portions of samples (Figure 1D, 2C). The features that allow the<br />
distinction in microscopic view are semi-ring-porous; fibrous zone; pith flecks and traumatic<br />
canals. The macroscopic and microscopic observations provi<strong>de</strong> distinction of growth rings<br />
boun<strong>da</strong>ries.<br />
Senegalia pedicellata (Benth.) Seigler & Ebinger shows cambial variant lobed stem with<br />
flattened lobes and growth rings boun<strong>da</strong>ries of sporadic occurrence (Figure 1B, 2D). The<br />
distinction in microscopic view is possible, in some portions of stem, mainly by pith flecks<br />
and traumatic canals. But occasionally it is also possible by semi-ring-porous and fibrous<br />
zone. The macroscopic and microscopic observations provi<strong>de</strong> distinction of growth rings<br />
boun<strong>da</strong>ries.