GARDEN FLOWERS. 2/5 



nials. Soil, sandy loam. Increased by seeds. Some are 

 pretty, but not of much importance. 



ONONIS. Restharrow. [Leguminosae.] A genus of hardy 

 and half-hardy perennials and annuals. Some of the sub- 

 shrubby species are suitable for large rock-work. Soil, sandy 

 loam. Increased by seeds. 



ONOSMA. [Boraginaceae.] Perennial herbs, mostly hardy, 

 and many of them pretty subjects for rock-work. The flow- 

 ers are tubularly bell-shaped, and in all cases yellow or yel- 

 lowish. They grow best on dry and rather sandy soil, such 

 as exposed rockwork, being very liable to rot off in damp 

 confined places ; and the tenderer ones need protection from 

 wet in winter. When seeds can be got, they make the best 

 plants : they should be sown about May, either in pots for 

 subsequent transplantation, or in the situations where they 

 are to remain. If seeds cannot be had, they must be in- 

 creased by cuttings of the young shoots, planted in sandy 

 soil, and placed under a hand-glass. 



O. echioides (echium-like) ; half-hardy perennial ; i foot ; flow- 

 ers white, in April ; south of Europe ; 1683. O. Gmelini (Gme- 

 lin's) ; hardy perennial ; i foot ; flowers straw-colored, in June ; 

 Altai; 1829. O. Orientale (Eastern); half-hardy perennial; 

 6 inches ; flowers yellow, in May ; Levant ; 1752. O. polyphyl- 

 lum (many-leaved) ; hardy perennial ; i foot ; flowers pale-yel- 

 low, in July; Tauria ; 1829. O. rupestre (rock); half-hardy 

 perennial; i foot ; flowers yellow, in May; Caucasus; 1819. 

 O. setosum (bristly) ; hardy perennial ; i foot ; flowers yellow, in 

 July ; Russia ; 1838. O. stelhdatum (starred) ; hardy perennial ; 

 6 inches ; flowers yellow, in May; Croatia; 1819. 



OPHELIA. [Gentianaceae.] A pretty annual. Peat bor- 

 der. Seeds, to be sown in heat in April ; the young plants 

 planted out in May. 



O. purpurascens (purplish) ; half-hardy annual ; 9 inches ; 

 flowers purplish, in May ; East Indies ; 1836. 



