178 NATURAL HISTORY OF PLANTS. 



dorsifixed 1 -celled introrse 1-rimose. Gennen stipitate, inserted in 

 bottom of receptacle, 1 -celled ; style terminal slender tubular; apex 

 stigmatose, truncated, perforated ; placentas 3, parietal ; 2 posterior ; 

 ovules oo on each placenta, descending, anatropous ; microp} r le 

 introrse, superior. Capsule rostrate siliquiform, 3-6- or more rarely 

 2-4-8-gonous, torulose, 1 -celled, 3- or more rarely 2-4-valved ; valves 

 bearing in the middle of their sides co 1 -seriate seeds, separated by 

 spongy spurious septa ; seeds ovate, wingless or with as many wings 

 as valves ; embryo exalbuminous straight ; cotyledons amygdaloid, 

 oily ; radicle superior short ; plumule many-leaved. — Unarmed trees, 

 abounding in an odoriferous gum ; leaves alternate deciduous impari- 

 2-3-pinnate ; pinnse and pinnules opposite, occasionally stipellate ; 

 leaves entire caducous ; stipules 0, or present at base of petiole 

 and pinnae as sometimes stipitate glandules; flowers in axillary 

 much branched cymiferous racemes {Warm Asia, North-east Africa). 

 See p. 161. 



