ANACARDIACE^. 



differences relied upon by those authors are of no specific importance. 

 It is said that R. radicans has the leaflets quite entire and smooth, while 

 R. Toxicodendron has them angular, gashed and downy. 



The general character of this genus is to be poisonous. The follow- 

 ing species in particular have been named : 



590. R. glabra Linn, sp.pl. 380. 



591. R. pumila Michx.fl. i. 182. the most venomous of all. 



592. R. perniciosa HBK. vii. 10. 



HEUDELOTIA. 



Flowers hermaphrodite. Calyx tubular, 4 toothed, coloured. 

 Petals 4, linear, obtuse, longer than the calyx. Stamens 8, 

 the 4 alternating with the petals longest. Ovary minute, in the 

 bottom of the calyx ; stigma obscurely 2-lobed, subsessile. 

 Drupe dry, pisiform, acute, 1 -celled, with 1 suspended seed. 



593. H. africana Guillem. and Perrott. fl. senegamb. \. 150. 

 t. 39. Niouttout Adam. Sandy wastes in the interior of 

 Senegal. 



A bush 8-10 feet high, armed with axillary spines. Leaves downy, 

 ternate, stalked ; leaflets oval, rather rhomboidal, coarsely and un- 

 equally cut, rugose, tapering to the base. Flowers very small, reddish, 

 appearing upon the naked branches before the leaves. According to 

 Guibourt this should be the plant that yields the African Bdellium, 

 " only the tears of Bdellium collected on the bush by M. Perrottet are 

 hardly bigger than peas; therefore the Bdellium of commerce is either 

 produced by a different species, or the Niouttout must become a larger 

 tree than M. Perrottet saw." (ii. 498.) It must be remarked that 

 nothing is said about Bdellium in the Flora Senegambiae of Perrottet 

 and Guillemin. 



STAGMARIA. 



Calyx inferior, tubular, deciduous, irregularly ruptured at 

 the edge. Petals 5, inserted on the stipe of the ovary. Stamens 

 5, alternate with and as long as the petals. Carpels 3, 

 1 -seeded ; part often abortive. Styles terminal, shorter than 

 stamens ; stigmas blunt. Berry reniform, furrowed on 1 side, 

 1 -seeded, with a varicose bark. Embryo erect ; cotyledons con- 

 solidated ; radicle incurved. 



594. S. verniciflua Jack in Comp. to BM. i. 266. Arbor 

 vernicis Rumph. ii. t. 86. Kayo Rangas Malay. Eastern 

 islands in the Indian Archipelago. 



Tree of considerable size ; branches and branchlets smooth, round, 

 and marked with small dots. Leaves alternate or scattered, petiolate, 

 elliptic-lanceolate, about 8 inches long, subattenuate to the base, 

 rather acute, sometimes obtuse, or even retuse at the point, very entire, 

 very smooth, firm and shining, with lucid nerves. Petioles about an 

 inch long, flattened above ; stipules none. Panicles axillary, on rather 

 long peduncles. Flowers numerous, pedicellate, white, having rather a 



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