382 VARI(3US PLANT GROUPS 



another but from the partitions within, the sutures coming 

 at the margin of the partitions. Dehiscence of this type is 

 termed marginicidally septifragalj 



The family is a small one made up mostly of round-stemrtied 

 herbaceous vines, ivith more or less milky juice; alternate, ex- 

 stipulate leaves; regular floioers having a gamo-petalous corolla, 

 -plicate-convolute in the bud, and having usually adherent 

 stamens, the ovary being two to five-celled; and with the fruit, 

 commonly a capsule, containing a feiv large albuminous seeds 

 ivith folded embryo. 



133. The nightshade family (Solanaceae). Examples: 

 white potato (Figs. 58 I-III, pages 59, 60j, tomato (Figs. 

 88, 89, pages 83, 84), egg-plant (Fig. 90, page 85), red pepper 

 (Figs. 125 I, II, 126, pages 131, 132), tobacco (Fig. 173, 

 page 184), belladonna (Fig. 175, page 187), and jimson-weed 

 (Figs. 187 I, II, page 200). 



No new signs appear in the formulas of Nicotiana. Datura, 

 Atropa, Capsicum, Solanum, and Solanaoea; on pages 416, 417. 



This large family may be distinguished as consisting of 

 mostly rank-scented, round-stemmed, herbaceous plants, with 

 watery sap; leaves alternate, exstipulate; floiuers regular or 

 nearly so; the corolla gamopetalous, plicate-convolute , or plicate- 

 valvate; ovary two-celled; fruit a capsule or berry containing 

 many small albuminous seeds ivith the embryo coiled. 



134. The figwort family (Scrophulariaceae) is exemplified 

 by the foxglove (Fig. 192, page 204). 



See the formulas of Digitalis and Scrophulariacea; on pages 416, 

 417. 



Round or square-stemmed, herbaceous or ivoody plants not 

 strongly scented; the juice ivatery and often bitter; leaves cdter- 

 naie, opposite or veriicillate, exstipulate; flowers irregular; 

 corolla gamopetalous, imbricate in wstivation; stamens two to 

 five, mostly four; ovary two-celled; fruit a septicidal or loculicidal 

 capsule, containing 7nany S7nall albuminous seeds with the 

 embryo uncoiled. 



1 Sop-tif ra-ffal < Ji. scuhivi, pariWion; frangcir, break. C/ +". 



