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SEM observations on seeds of some herbaceous Phyllanthus L. species (Phyllanthaceae)

Observações de sementes de algumas espécies herbáceas de Phyllanthus L. (Phyllanthaceae) em MEV

Six medicinal herbaceous Phyllanthus L. (Phyllanthaceae) species, P. tenellus Roxb., P. niruri L., P. stipulatus (Raf.) Webster, P. urinaria L., P. caroliniensis Walt., and P. amarus Schum. & Thonn. are difficult to distinguish. In order to solve this problem, the ornamentation of the seed surfaces was analyzed by SEM (scanning electron microscopy). Differences between lateral, dorsal and ventral surfaces were observed. The seeds were cut into sections at different angles, exposing testa sculptures. Three types of surface ornamentation patterns were observed and they showed to be avaluable diagnostic.

Phyllanthus; Phyllanthaceae; seed ornamentation; scanning electron microscopy (SEM)


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