692 CONTRIBUTIONS FROM THE NATIONAI^ HERBARIUM. 



Fruit winged. 

 Leaves compound 7. THOITINIA, 



Leaves simple. 



Fruit 3-celIed 8. DODONAEA. 



Fruit 1-celled 9. NEOPRINGLEA. 



Leaves pinnate, tlie terminal leaflet absent. 



Seeds 2 in each cell 10. EXOTHEA. 



Seeds 1 in each cell. 

 Fruit dehiscent. 



Sepals distinct 11. CUPANIA. 



Sepals united 12. MATAYBA. 



Fruit indehiscent. 



Fruit of usually 3 samaras 13. THOUINIDIUM. 



Fruit baccate or drupaceous. 



Fruit pubescent, not lobed ; leaflets 4 14. TALISIA. 



Fruit glabrous, usually deeply 2-lobed but only one of the carpels de- 

 veloping; leaflets usually more than 4 15. SAPINDUS. 



1. SERJANIA Schumach. Skrivt. Naturh. Selsk. (Kj0benhavn) 3': 125. 1794. 



Refekences : Radlkofer, Monographie der Sapindaceen-Gattung Serjania, 

 pp. 1-392. 1875 ; Radlkofer, Ergiinzungen zur Monographie der Sapindaceen- 

 Gattung Serjania, pp. 1-195. 1886. 



Scandent shrubs ; leaves trifoliolate, 2 or 3 times ternate, pinnate, or bi- 

 pinnate ; flowws polygamous, in axillary racemes, w^hite or whitish ; sepals 5, 

 the outer ones smaller ; petals 4 ; stamens 8 ; fruit of 3 samaras, these seed- 

 bearing at the apex. 



The stems of some species are used in Central America for making coarse 

 baskets. All the species are believed to possess narcotic poisonous properties 

 of varying intensity, and some of them are employed for stupefying fish. 



Partition walls (dissepiments) of the fruit broad, nearly as broad as the 

 fertile portion of the cell, the cells therefore firmly united. 

 Woody portion of the stem simple, of a single central body. 



Leaves trifoliolate 1. S. trifoliolata. 



Leaves triternate or bipinnate. 



Leaves 3 or 4 times ternate ; stems glabrate 2. S. cambessediana. 



Leaves bipinnate ; stems hirsute 3. S. adiantoides. 



Woody portion of the stem compound, consisting of a large central portion 

 and 3 to 5 small outer ones. 



Leaves trifoliolate 4. S. heterocarpa. 



Leaves triternate, pinnate, or bipinnate. 



Outer woody bodies of the stem strongly complanate, contiguous. Leaves 



biternate 5, S. insignis. 



Outer woody bodies subterete. 



Branches acutely angulate, canaliculate ; outer fascicles of the wood 

 not immersed in the central body. 



Leaves biternate ; branches pilose throughout 6. S. impressa. 



Leaves 2 or 3 times pinnate ; branches pilose only on the angles. 



7. S. trachygona. 



Branches subterete or obtusely angulate, the outer fascicles more or 



less immersed in the central body. 



Branches glabrous or the younger ones slightly pubescent. Leaves 



biternate, glabrous or nearly so 8. S. brachystachya. 



