436 XLV. AKACARDIACE/E (OLIVEU). 



Ovary 1 -celled {Ajiacardieo') . 



Leaves simple or 3-foliolate (in African species). Petals im- 

 bricate, 4-6. Styles 3, free or connate 1. Rhus. 



Leaves jjjnnate. Petals valvate or subvalvate. Ovule sus- 

 pended near middle of cell 2. SORINDEIA. 



Leaves simple. Antheriferous stamens 1 or 2. Style 1 . . 3. Mangifera. 



Leaves simple. Stamens 10, few or all antheriferous. Style 1 4. Anacardium (cult.). 



Leaves pinnate. Flowers 3-raerous. Petals imbricate . . . 5. H^matostaphis. 



Leaves pinnate. Flowers 4-5-merous. Petals valvate . . 6. Trichoscypha. 



Leaves pinnate. Flowers 4-5-merous, racemose. Petals im- 

 bricate 7. Odina. 



Ovary 2-5 -celled {SpondiecB). 



Leaves pinnate. Stamens 8-10. Styles 4-5 8. Spoxdias. 



Leaves pinnate. Stamens 12-24 9. Sclerocarya. 



Leaves pinnate. Stamens 8-10. Style short with 3-lobed 



stigma 10. Hitzerta. 



Leaves 3-foliolate. Stamens 8 11. Lanneoma. 



1. RHUS, Linn. ; Bentli. et Hook. f. Gen. PL i. 418. 



Flowers small, regular, polygamous. Calyx 4-6-partite, persistent ; seg- 

 ments equal. Petals as many, spreading or erect, imbricate in Ecstivation. 

 Stamens as many and alternate with the petals or 10, free, inserted in the 

 annular disk ; filaments subulate ; anthers in the female flower usually rudi- 

 mentary. Ovary sessile, globose or ovoid. Styles 3, free or connate, erect or 

 appress'ed to the ovary. Ovule suspended from a basal funicle. Drupe usually 

 small, dry or resinous. — Trees or shrubs, often abounding in resin. Leaves 

 simple or 3-foliolate in the tropical African species, alternate or rarely op- 

 posite or verticillate. Panicles axillary and terminal, usually many-flowered. 



A large genus of both hemispheres, with numerous (about 50) species at the Cape. All 

 but three of the following species appear to be peculiar to tropical Africa. 



Leaves simple. 



Leaves alternate, 4-10 in 1. R. pulcherrima. 



Leaves subternate, 2-5 in 2. R. insignis. 



Loaves 3-foliolate. 



Leaves glabrous or finely puberulous. 



Leaflets obtuse 3. -R. glaucescens. 



Leaflets oval or hnear-lanceolate, acuminate or acute, lateral 



petiolulate. Panicles rather lax 4. J?, retinorrhcea. 



Leaflets oval, acute or obtuse, not acuminate, lateral subsessile. 



Panicles short, rather dense or glomerate ' 5, R. ghdinosa. 



Leaflets elongate, linear (3-6 in.), subobtuse, mucronate . . 6. -R. viminalis. 

 Leaves tomentose or pubescent beneath. 



Leaflets oval or oblanceolate, obtuse or acute, pubescent and not 



reticulate above. Panicles shorter than leaves 7- -R. abyssinica. 



Leaflets obovate, broadly rounded or apiculate, glabrous or gla- 



brescent and minutely reticulate above 8. 72. villosa. 



Leaflets oval, acute, on short broadish petioles. Panicle terminal, 

 rigid, exceeding the leaves, with sessile flowers on the short 

 interrupted lateral ramuli 9. i?. Kirkii. 



1. R. pulcherrima, Oliv. Young shoots pubescent-hoary or early 

 glabrous. Leaves ample, simple, alternate, oblong-elliptical or broadly ob- 

 long, obtuse or refuse, mucronate, glabrous or, at least at first, minutely i 



