GARDEN FLOWERS. 357 



T. alata (winged) ; stove-climbing perennials ; 5 feet; flowers 

 buff with black eye, in June; Africa; 1823. T. alata alba 

 (white) ; stove climbing perennial ; 5 feet ; flowers white, with 

 black eye, in June ; Madagascar. T. alata aiirantiata (orange); 

 stove climbing perennial ; 5 feet ; flowers orange with black eye, 

 in June ; gardens. 



THYMUS. Thyme. [Lamiaceae.] Hardy evergreen per- 

 ennials and sub-shrub. Soil, sandy loam. Propagated by 

 divisions or cuttings. Many of them are beautiful rock- 

 plants. 



T.azureus (azure); hardy perennial ; 6 inches ; flowers purple, 

 in June ; south of Europe ; 1830. T. Corsicus (Corsican) ; half- 

 hardy perennial ; 6 inches ; flowers lilac, in June ; Corsica; 1831. 

 T. lanuginosus (woolly) ; hardy trailing perennial ; flowers pur- 

 ple, in July ; Britain. 



TIARELLA. [Saxifragaceag.] Hardy perennials. Common 

 dryish soil. Increased by division. 



T. cordifolia (heart-leaved) ; 6 inches ; flowers white, in May ; 

 North America ; 1731. 



TIGRIDIA. Tiger-flower. [Iridaceae.] One of the most 

 showy and remarkable of flowers, but at the same time one 

 of the most fugitive ; the flowers last but a few hours, but 

 there is a good succession of them produced. They are 

 hardy bulbous-rooted plants, with the flowers large, singularly 

 formed, like a cocked hat reversed, and beautifully spotted 

 with a darker color upon a yellow or deep orange-colored 

 ground. The two so-called species are very similar in all 

 but having a darker or lighter ground color. The flowers 

 last but the day they come out if the sun is pretty hot, which 

 it generally is when they flower, in July. They do not grow 

 more than twelve inches high, and should be planted in a 

 mass, because there will then be a number of flowers open 

 for some time ; when planted singly, that is not the case, for 

 there will be days when a plant will have none, and that, too, 



