117 
E U R S E R A. (Jacciuin.) 
(Gomart, Fr.) 
Natural Order , Burserace^e, (Kunth.) Linncean Classifi- 
cation , POLYGAMIA DlCECIA. 
Flowers Polygamous. Male. Calyx small, 3 to 5-parted, with obtuse 
lobes. Petals , 3 to 5, spreading, with a valvular astivation. Stamina 
6 to 10 ; annular disk, with 6 to 8 crenulations. Fertile Flowers, 
with the calyx 3-parted. Petals 3. Stamens 6. Ovary ovate, 3-celled. 
Style short, with a capitate obtuse, 3-lobed stigma. Drupe oblong, with 
3 nuts ; the bark succulent and trivalvular ; 2 of the nuts abortive ; the 
fertile one fleshy, bearing 2 ovules, and perfecting only one seed. Seed 
pendulous, without albumen ; cotyledones foliaceous, with wrinkled folds, 
the radicle straight and superior. 
Tropical American balsam-bearing trees, with unequally pinnated and 
sometimes simple articulated leaves, with small flowers in axillary racemose 
panicles. 
Named after Joachim Burser, Professor of Botany at Sara, in Naples. 
WEST INDIAN BIRCH TREE. 
BURSERA gummifera, foliis deciduis scepius impari-pinnatis , foliolis 
ovatis acutis membranaceis , racemis axillaribus . Decand. Prod. vol. 
2, p. 78. Jacquin. Amer. p. 94, tab. 65. Swartz, Obs. p. 130. 
Terebinthus major betulce cortice, fructu triangulari. Sloane, Jam. t. 
199. 
Terebinthus foliis cordato-ovatis pinnatis , cortice Icevi rufescente, foribus 
masculis spicatis. Bbown, Jam. p. 345. 
The West Indian or Jamaica Birch becomes a large, lofty 
