Leaf ontogenesis of Trembleya phlogiformis DC. (Microlicieae, Melastomataceae): functional aspects and indumentum characterization

Leaf ontogenesis is determinant for the establishment and regulation of its structural functional properties, in addition to being an excellent tool assignment different groups angiosperms. Even though importance leaf morphology anatomy taxonomic use well known, few studies have addressed processes ontogeny Melastomataceae. Herein, we sought define ontogenetic steps Trembleya phlogiformis, highlighting indumentum, understand main traits. Shoot apex, young fully expanded leaves were processed by usual light microscopy procedures. At first node, primordia are densely covered with trichomes emergences. The adaxial layer ground meristem gives rise palisade parenchyma, procambium originates from median layers spongy parenchyma develops abaxial meristem. differentiation isobilateral mesophyll on T. a common feature Microlicieae, comes stratification. However, phlogiformis stands out showing mature cells irregular shapes. reveals distinct mechanisms cell may be important adaptive