362 GARDEN FLOWERS. 



throw out suckers from their roots, by which they may be 

 increased. They are sometimes called Kniphofia. 



T. Burchellii (Burchell's) ; half-hardy perennial ; 2 feet ; flow- 

 ers orange, in August ; Cape; 1816. T. pumila (dwarf) ; hardy 

 perennial; i foot; flowers orange, in September; Cape; 1774. 

 T. Rooperi (Rooper's) ; hardy perennial ; 3 feet ; flowers or- 

 ange-scarlet, in autumn; Natal; 1848. T. Uvaria (grape); 

 hardy perennial ; 2 feet ; flowers orange, in August ; Cape ; 1707. 



TROLLIUS. Globe-flou>er. [Ranunculaceae.] Showy her- 

 baceous perennials, quite hardy, growing in ordinary garden 

 soil, and increased easily by parting the roots during the 

 dormant season. 



T. Asiaticus (Asiatic) ; hardy perennial ; i foot ; flowers 

 deep-yellow, in May ; Siberia ; 1759. ^ Europosus (European) ; 

 hardy perennial ; i foot ; flowers yellow, in May ; Britain. 



There are many other species. 



TROP.OLUM. Indian Cress. [Tropaeolacese.] Soft- 

 stemmed climbing herbs, part of which are annual, and 

 others perennial, having tuberous roots. T. mq/us, the 

 common Nasturtium, as it is called erroneously, and its va- 

 rieties, may be sown in the open ground in May, where it is 

 to bloom through the summer, and requires neither care nor 

 attention. These are beautiful plants everywhere in rich 

 ground, covering the surface with foliage and flowers, or 

 climbing up stakes, and hiding unsightly fences or other ob- 

 jects, or potted and placed on the window-sill, where the 

 burning heat and limited food arrests their vegetation, but 

 adds profusion to the blossoms, and intensity to their colors. 

 T. minus is smaller, but equally effective in its way. The 

 double orange-colored variety of T. majus is a greenhouse 

 plant, as is also the double scarlet Nasturtium, which is the 

 double-flowered variety of T. minus. These are increased 

 by cuttings, and preserved, like other half-hardy things, in 



