190 Class XII. Order IV. 



Leaves oblong, obtuse, obscurely serrulate on the upper part, 

 edged with hairs, and frequently with a dark spot in the centre. 

 Flowers very small, capsule hairy. Found in sandy soils. June, 

 July. Annual. 



EUPHORBIA HYPERICIFOLIA. Oval leaved Spurge. 



Smooth, branching, erect and spreading ; branches 

 divaricate ; leaves opposite, serrate, oval-oblong, sub- 

 falcate ; corymbs terminal. 



Larger than the last. Leaves unequally ovate-oblong. In 

 rich grounds. July, &c. Annual. 



Class XII. ICOSANDRIA. Twenty or more sta- 

 mens, inserted on the calyx. 



Order I. MONOGYNUL One style. 



199. PRUNUS. Calyx inferior, five cleft; corolla 

 five petallcd ; drupe with a smooth or slightly seamed 

 stone. 



Order II. DIGYJYM. Two styles. 



200. CRATJEGUS. Calyx superior, five cleft; pe- 

 tals five ; berry two seeded. 



Order III. TR1GYNIA. Three styles. 



201. SOIIBUS. Calyx superior, five cleft; petals 

 five ; berry three seeded. 



OrderlV. PENTAGYNM. Five styles. 



202. PYRUS. Calyx superior, five cleft ; corol- 

 la five petalled ; pome five celled ; cells two seeded. 



203. SPIRJEA. Calyx inferior, five cleft ; corolla 

 five petalled ; capsules two valved, many seeded. 



