OAK. See Quercus. 

 Oats Animated. See Avena. 



Obeliscaria. [Compositse.] Showy hardy perennials. 

 They require the same treatment as Rudbeckia, to which 

 they are alUed. 



O. colutnnaris (columnar) ; hardy perennial ; 3 feet ; flowers 

 yellow, in August; North America; 181 1. O. Drummondii 

 (Drummond's) ; hardy perennial ; 3 feet ; flowers yellow and 

 black, in July; North America; 1836. O. pidcJierrhna (pret- 

 tiest) ; hardy perennial ; 3 feet ; flowers yellow and red, in Au- 

 gust ; Texas ; 1835. 



CEnothera. Eve7iing-pri7nrose. [Onagraceae.] Showy 

 hardy plants, mostly perennials and biennials, with a few 

 annuals. The annuals require to be sown in May, where 

 they are to flower, and to be thinned when they come up ; or 

 they may be sown in a patch, and planted out. Common 

 garden soil. The biennial and perennial kinds should be 

 sown in patches, and planted out when they are large enough, 

 wherever they are to bloom. The latter grow best in peaty 

 soil, and especially in situations where they are not subjected 

 to drought. There are a large number of species. Most 

 of the old-fashioned annual CEnotheras are now called 

 Godetia. 



CE. bietmis (biennial) ; hardy biennial ; 4 feet ; flowers yellow, 

 in July; North America; 1629. CE. Driunmondii (Drum- 

 mond's) ; half-hardy perennial ; i foot ; flowers yellow, in July ; 

 Texas; 1833. CE. Frascri (Eraser's); hardy perennial; 18 

 18 ' 273 



