542 BOTANY. 



Tribe TocldaliecB, witli actinomorpliic, mostly diclinous flowers, 

 coriaceous or baccate fruits, and seeds with endosperm. 



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

 mia Jwponica, a small Japanese shrub, and two species of Phelloden- 

 dron, from Manchuria, are planted in gardens. 



Tribe IKanthoxylece, with actinomorphic, mostly diclinous 

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



Xanthoxylwm, Americanum, the Common Prickly Ash, of the 

 Northern United States, and X. ClavaSerculis, the Southern Prickly 

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

 planted. 



Tribe Boroniece. — Australian shrubs. 



Tribe Diosmece, with actinomorphic, monoclinous flowers, cap- 

 sular fruits, and seeds without endosperm. 

 Species of Diosma and Barosma, pretty Afn'can shrubs, are to be found 



in conservatories. From their leaves the drug 



Buchu is obtained. 



Tribe Jtufece, with generally actinomorphic, 

 monoclinous flowers, capsular fruits, and seeds 

 with endosperm. (Fig. 506.) 



Muta 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 riant, IS a heavy-scented ornamental plant, 



^'^imitfof^ateZri-' ^^^^^e glandular foliage secretes a volatile oil, 

 gin) slightly Bhaded,— Af- which is said sometimes to flash into flame 

 ter Sachs. ^^^^^ ^ jj^j^^ .^ brought near to it. (Figs. 116-7.> 



Tribe Cuspariece, with zygomorphic, monoclinous flowers, cap- 

 sular fruits, and seeds without endosperm. 



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

 ter medicinal bark, known as Angustura Bark. 



Order Oeraniaceee, — 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 Balsamina, 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.) 



OxaMs contains several native species of Wood Sorrel, all of which: 



