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Voucher: Kostadinov 053, (URV)
Brief description: A tree to 25 m; the bark is aromatic and has characteristic horizontal lenticels. Leaves are lanceolate to oblong or oblanceolate, simple, alternate, entire, pinnately veined, glabrous, margins finely serrate-toothed. The distal end of the petiole may have small glands. Flowers are perfect, white, in terminal racemes. Fruits are a 1-seeded, dark purple to black drupe with fleshy exocarp and hard endocarp (stone).
Campus data: Frequent in the wild everywhere on campus. Many trees are infected with a fungal pest, black knot (Dibotryon morbosum), which forms conspicuous thickenings on the branches.