1 82 GARDEN FLOWERS. 



es ; flowers yellow and red, in July ; Cape of Good Hope ; 1774. 

 G. gentianoides (gentian-like) ; half-hardy annual ; 6 inches ; 

 flowers pinkish-red, in July ; Cape of Good Hope ; 1848. 



Other varieties are rejiexa, cinnabarina, lilacina, and lutea. 



Greek Valerian. See Polemonium. 



Gratiola. [Scrophulariaceae.] A family of low-growing 

 plants of but little beauty, but useful in rich moist soil. 

 Propagated by division. The best species are G. aurea, 

 megalocat'Pa, officinalis^ pilosa^ quadridentata^ and Virginica. 



Gromwell. See Lithospermum. 



Groundsel. See Senecio. 



Ground Ivy. See Nepeta. 



Guelder-Rose. See Viburnum. 



Guizotia. [Compositae.] Hardy annual. Cultivated in 

 southern Europe as an oil plant. Soil, light rich loam. 

 Increased by seeds. 



G. oleifera (oil-yielding) ; hardy annual ; 3 feet ; flowers yel- 

 low, in July ; Abyssinia ; 1775. 



Gymnocladus. [Leguminosas.] A fine hardy orna- 

 mental tree, very conspicuous in summer for its plumes of 

 foliage. It thrives in any good soil, but in deep mellow 

 loam it grows with great rapidity. Propagated by seeds and 

 cuttings of the root. 



G. Canadensis (Canadian) ; hardy tree ; 20 feet ; flowers 

 white, in June ; North America. 



Gymnodiscus. [Compositag.] A hardy annual, growing 

 in common garden soil, and propagated by seeds sown in 

 the open border in May. 



G. capillaris (hair-like) ; hardy annual ; flowers yellow, in 

 June ; Cape of Good Hope ; 1822. 



Gynandropsis. [Capparidaceae.] Hardy and stove an- 

 nuals and biennials, allied to Cleome. The hardy species 



