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The studies of Bailey and Nast (1943a, 1943b, 1944a, 1944b) reported on Exospermum van Tiegh. as part of a series of studies on anatomy of Win teraceae. Since that time, a study on flowers of the genus by Sampson and Tucker (1978) has appeared. That study was based upon liquid-preserved material and utilized scanning electron microscopy. Sampson and Tucker demonstrated that ovule placement in Exospermum is not laminar, as had been alleged. Bongers (1973) included Exospermuin in a survey of foliar epidermis in Winteraceae. In 1978, I was able to collect excellent material of Exosperinuin stipitatum (Baill.) van Tiegh. ex Pug, from middle elevations of Mt. Panié, New Cal edonia. Trees were in flower and permitted observations on details of flower opening and pollen presentation. From this material, liquid-preserved spec imens upon which anatomical observations could be made were prepared. Wood of these trees was also obtained at that time. Wood anatomy of Exospermum has not been described hitherto. Bailey (1944) did not include the genus in his survey of winteraceous woods, probably because no wood samples of Exospermum were to be found in wood collections at that time. Systematic anatomy of Pseudowintera Dandy wood has been studied by Patel (1974). The question of reaction wood in Winteraceae has been inves tigated more recently by Kuçera and Philipson (1977, 1978) and by Meylan (1981). Systematic wood anatomy of the genera of Winteraceae other than Exosperinum is now being undertaken (Carlquist 1981, 1982). The present study is designed to complement earlier studies on Exosper mum and to offer comments on this genus and its relationships within Win teraceae. Although a second species of Exospermum, E. lecartii van Tiegh., has been recognized by some authors, more recent information (Guillaumin 1942; Vink, cited in Sampson and Tucker 1978) supports recognition only of E. stipitatuin within the genus.

Exospermum stipitatum (Winteraceae): Observations on Wood, Leaves, Flowers, Pollen, and Fruit