382 VARIOUS PLANT GROUPS 
another but from the partitions within, the sutures coming 
at the margin of the partitions. Dehiscence of this type is 
termed marginicidally septifragal.: 
The family is a small one made up mostly of rownd-stemmed 
herbaceous vines, with more or less milky juice; alternate, ex- 
stipulate leaves; regular flowers having a gamopetalous 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 few large albuminous seeds 
with folded embryo. 
133. The nightshade family (Solanacee). Examples: 
white potato (Figs. 58 I-III, pages 59, 60), 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 Solanacez 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; flowers 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 with the embryo coiled. 
134. The figwort family (Scrophulariacez) is exemplified 
by the foxglove (Fig. 192, page 204). 
See the formulas of Digitalis and Scrophulariacez on pages 416, 
417. | 
Round or square-stemmed, herbaceous or woody plants not 
strongly scented; the juice watery and often bitter; leaves alter- 
nate, opposite or verticillate, eastipulate; flowers wrregular; 
corolla gamopetalous, imbricate in estivation; stamens two to 
five, mostly four; ovary two-celled; fruit a septicidal or loculicidal 
capsule, containing many small albuminous seeds with the 
embryo uncorled. 
1 Sep-tif’ra-gal < L. septum, partition; frangere, break. Cj +. 
