PLANT FAMILIES: PERSONATE. 



285 



Fig. 381. 



Morning-glory (Convol- 

 vulus sepium). 



arrow- or halberd-shaped, and the gamopetal- 

 ous corolla is white or rose color. The corolla 

 forms a broad funnel-shaped tube, and is 

 twisted or convolute in the 

 bud, as in all the mem- 

 bers of the family. Floral 

 formula : Ca5,Co5,A5,G2. 

 The five sepals are covered 

 by two large bracts. Other 

 members of this family are 

 the morning-glory, sweet potato, 

 cypress vine, the parasitic dodder, 

 etc. 



PERSONATyE. 



544. The nightshade family 

 (solanaceae). Fig. 382 represents 

 the ground- cherry (physalis),a mem- 

 ber of this family. The formula 

 for the flower is Ca5,Co5,A5,G2. 

 The calyx becomes enlarged and 

 inflated, enclosing the edible berry. 

 The potato, egg-plant, tomato, to- 



bacco, etc., are members of the 

 nightshade family. 



545. The fig wort family (scro- 

 phulariaceae). The mullein (ver- 

 bascum), toad-flax (linaria), turtle- 

 head (chelone), etc , are members of 

 the figwort family. The plants are 

 mostly herbs. The stamens are 

 usually didynamous (four in two 

 pairs, one pair shorter than the 

 other) or diandrous (two stamens). 

 The stamens are inserted on the 

 two lipped corolla tube, which is 

 more or less irregular. In some 

 genera there are five stamens, as in 

 verbascum. 



546. The borage family (boragi- 

 nacese). The pretty little forget- 



Fig. 382. 

 Ground-cherry (Physalis pennsylvanica). 



