246 WEEDS AND USEFUL PLANTS. 
Orver LI. CONVOLVULA’CEA. (Convorvoius Famty.) 
Mostly trailing or twining herbs, often with a milky juice ; leaves alternate (in 
reduced to minute scales) ; ees re; , hexandrous ; romp of 51 imbricated 
Prat a vores 2-6-seeded pod. 
A family eotaig many ae plan nts, — oa which are cultivated for ornament. 
e furnished by plants of this order. 
Fig. 157. Common Hounds-tongue (Cynoglossum officinale). 158. Portion of the corolla 
swith the scales which a — throat. 159. The fruit, con: yet prickly nutlets adher- 
_ing to the base of the styel 
