65 



BOTANY 



with inconspicuous, white (lowers ami hairy seeds which are borue in follicles ; 

 poisonous. Other forms are mostly tropical or suh - tropical. The succulent 

 species of Stapelia, Hoodia, Tnchocuiilmi. etc.. which resemble Cactaccac in 

 habit, and inhabit S. African deserts, and IHsi-linlin r<irili-xi<ni c" ; ). the peculiar 

 pitcher plant of the Malayan region, deserve special mention. IIim <-nriLosa is 

 frequently cultivated. 



OFFICIAL. Hemidesmus iiidictts yields HKMIDF.SMI IIAIUX. 



Order 5. Tubiflorae 



Flowers pentamerous, actinoraorphic or zygornorphic. Carpels L'. 

 Ovary superior, bilocular, with two ovules, which are frequently 

 separated by a false septum, in each loculus. 



KK.. 7_".'. i'<irnli-nhix //Hsix (i nat. Pro. 780. JBwjoniitiH jmtfo (J nat size. After. 



size). Longitudinal section of the BKR<; and SCHMIDT). OFFICIAL. 



ttoxxer and a capsule (enlarged). 



Family 1. Convolvulaeeae. Herbs or shrubs, less commonly 

 trees, with alternate, sagittate or cordate leaves. The majority are 

 twining plants. Many contain latex. Corolla widely funnel-shaped, 

 only slightly lobed ; in the bud it is longitudinally folded and twisted 

 to the right. Stamens five. Ovules basal in the two or four cavities 

 of the ovary. Fruit, a capsule. 



IMPOUTAXT GKXEKA. Convolvulus arvennt (Fig. 729), a perennial, twining, 

 herbaceous plant occurring everywhere by waysides, and as a weed in corn-fields. 



