542 BOTANY. 



Tribe Toddnliece, with actinomorpliic, mostly diclinous flowers, 

 coriaceous or baccate fruits, and seeds with endosperm. 



Ptelea trifoliala, the Hop Tree, of the Eastern United States, Skim- 

 mia Jap'onica, a small Japanese shrub, and two species of PJielloden- 

 dron, from Manchuria, are planted in gardens. 



Tribe Xanthoxylece, with actinomorpliic, mostly diclinous 

 flowers, usually capsular fruits, and seeds mostly with endosperm. 



Xanthoxylum Americanum, the Common Prickly Ash, of the 

 Northern United States, and X. Clam- Her culis, the Southern Prickly 

 Ash, of the Southern States, are ornamental shrubs, and are often 

 planted. 



Tribe Boroniece. Australian shrubs. 



Tribe Diosmece, with actinomorpliic, monoclinous flowers, cap- 

 sular fruits, and seeds without endosperm. 



Species of Diosma and Barosma, pretty African shrubs, are to he found 

 in conservatories. From their leaves the drug 

 Buchu is obtained. 



Tribe Rutece, with generally actinomorpliic, 

 monoclinous flowers, capsular fruits, and seeds 

 with endosperm. (Fig. 506.) 



Suta graveolens, the Common Rue of the gar- 

 dens, is a native of Southern Europe and West- 

 ern Asia. 



Dictamnus Fraxinella, Fraxinella, or the Gas 

 Fig. 506. Diagram of , . . 



the flower of Dictamnus Plant, is a heavy-scented ornamental plant, 



(of lateT oi" wllose glandular foliage secretes a volatile oil, 

 gin) slightly shaded. Af- which is said sometimes to flash into flame 

 ter Sachs. when a light is brought near to it. (Figs. 116-7.) 



Tribe Cuspariece, with zygomorphic, monoclinous flowers, cap- 

 gular fruits, and seeds without endosperm. 



Oalipea cusparia, a large tree of Guiana and Brazil, furnishes a bit- 

 ter medicinal bark, known as Angustura Bark. 



Order Geraniaceee. The Geranium Family. Mostly herbs (rarely 

 shrubby or arborescent) ; leaves opposite or alternate, simple or com- 

 pound ; stamens more or less united below ; species, 750, mostly of 

 temperate and sub-tropical climates. 



Many are cultivated as ornaments. 



Impatiens Bakamina, the Garden Balsam, or Touch-Me-Not, some- 

 times erroneously called " Lady's Slipper," is a well-known annual 

 from India, which has been cultivated for more than two hundred and 

 fifty years. The name Touch-Me-Not (referring to its elastically open- 

 ing fruits) is shared by two pretty native species. (Fig. 507.) 



Oxalis contains several native species of Wood Sorrel, all of which 



