TEREBINTHACE^. 309 



gibbous; cotyledons of exalbtuninous embryo thick; radicle short 

 superior. — Trees ; leaves alternate simple entire coriaceous ; flowers 

 in racemes (paniculate) racemose-composite cymiferous. [Trop. Asia 

 and Oceania.) See p. 259. 



3. Sclerocarya Hochst. — Flowers polygamous, 4-merous or 

 rarely 5-merous ; sepals (coloured) and petals alternate longer much 

 imbricated. Stamens in male flower 8-15, inserted below thick 

 central disk subequally-4-lobed ; filaments free ; anthers introrse, 

 2-rimose ; in female flower 5-15, all or partly antherless. Germen 

 free, 2-3-locular ; styles 2, 3 distant at base, short thick, peltate 

 stigmatiferous at apex ; ovule in cell solitary descendent ; micropyle 

 introrse superior. Fruit drupaceous ; putamen thick hard, 2-3- 

 locular, Seeds in cells solitary or 0, descendent ; cotyledons of ex- 

 albuminous embryo oblong plano-convex. — Trees or shrubs ; leaves 

 alternate ; petiole long slender ; flowers in spicate axillary glome- 

 rules. {Trof: South Africa^ East and West.) See p. 259. 



II. BUESEEE^. 



4. Bursera L. — Flowers hermaphrodite or polygamous, 4-6- 

 merous ; calyx lobed or partite, imbricated. Petals 4-6, longer, 

 valvate, afterwards patent, finally refiexed. Stamens twice as nume- 

 rous as petals, inserted below hypogynous annular-crenate or lobed 

 disk ; filaments free ; anthers (effete in female flower) introrse 2- 

 rimose. Germen free (in male flower rudimentary), 2-6-locular; 

 style branches same in number rather thicker reflexed, inwardly 

 stigmatiferous at apex. Ovules in cells 2-nate, descendent, usually 

 collateral, more or less completely anatropous ; micropyle extrorse 

 superior. Drupe ovoid or globose, usually apiculate; exocarp 

 evalved or 2-6-valved ; pyrenas 1-6, adnate to interior of ligneous 

 or fleshy columella (whence free or adherent), usually 1-spermous. 

 Seeds plano-convex or sub-3-agonal ; cotyledons of exalbuminous 

 embryo entire, lobed or 3-fid, contortuplicate or sometimes hippo- 

 crepiform ; radicle short superior. — Balsamic trees ; leaves alternate 

 scanty or crowded at summit of twigs, deciduous or perennial, im- 

 paripirmate or more rarely 1-3-foliolate ; folioles opposite entire 



