This paper reports the occurrence of perforated ray cells in the wood of Sloanea lasiocoma K. Schum. (Elaeocarpaceae) and on the occasional presence of scalariform perforation plates, of trabeculae in vessel elements and fibres, as well as series of perforated ray cells in the wood of Casearia obliqua Spreng. (Flacourtiaceae).

The wood of Citharexylum solanaceum Chamo (Verbenaceae) is anatomically described and ilustrated with photomicrographs. The perforation plates were also studied under scanning electron microscopy, beeing recognized four different types of multiperforate plates, aside ofthe predominantly simple ones: scalariform, irregularly-reticulate, foraminate-radiate and radiate plates.

An unusual type of perforation plate is reported for Citharexylum myrianthum (Verbenaceae). It is a multiple perforation variant with a radiating pattern of wall material from a thickened central portion. In C. myrianthum it occurs together with simple and foraminatereticulate perforatio n plates; four types of combination perforation plates are also reported.

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