Boswellia. decandria monogynia. 383 



scabrous. Stipules none. Panicles terminal, large, erect, 

 composed of many, suberect, compound racemes, covered 

 with rough, glandular excrescenses. Flowers numerous, 

 small, white. Bractes small, falling. Calyx inferior, 

 cup-shaped, five-toothed, outside glandular. Petals five, 

 lanceolato-oblong, spreading, concave. Filaments ten, ra- 

 ther shorter than the petals, recurved, inserted with broad 

 bases round the bottom of the receptacle. Anthers round- 

 ish, incumbent. Germ superior, short-pedicelled, five- 

 celled with two ovula '\n each, attached to the thickened 

 middle of the axis. Style short, and thick. Stigma of five 

 obtuse lobes. Berry the size and appearance of a goose- 

 berry, skin tough, and replete with cells filled with a 

 fragrant green balsam, five-celled. Seed solitary, oblong. 

 Integument single, thin, colourless. Perisperm none. 

 Embryo inverse, green. Cotyledons conform to the seed. 

 Plumula conical, bidentate. Radicle cylindric, superior- 



The fruit, and indeed every part of the tree, possess 

 a peculiar kind of agreeable fragrance, which is something 

 of a Terebinthinaceous nature- 



BOSWELLIA. (R.) 



CaZi/j: five- toothed. Coro/ five-petalled. Nectary dL cre- 

 nulated fleshy, staminiferous cup, surrounding the lower 

 part of the germ. Germ superior, three-celled, cells two- 

 seeded, three-valved. Seed solitary, membrane winged. 

 Embryo inverse, folded, without perisperm. 



Note. The genus is so named, in memory of the late 

 Dr. John Boswell, Physician in Edinburgh. 



1. B. thurifera. Colebrooke in Asiat. Res. 9. 317- and 11. 

 158. 



Leaflets serrate. Racemes simple, axillary. Filaments 

 inserted on the exterior margin of the nectary, 

 Canarium hirsutum. Willd. 4. 760. 



