2l6 



THE FLOWER 



and 431), so called from a fancied resemblance of the 

 swollen palate to a grotesque persona, or mask. The sage 

 and dead nettle are familiar examples of the first, the 

 snapdragon and toadflax of the second. An inspection 

 of the sage or the dead nettle will show that the two 

 lips represent the divisions of a five-lobed sympetalous 

 corolla united into sets of two and three petals respectively. 

 The very divergent appendage of the lower Up represents 

 the middle one of three petals, while the two lateral ones 

 have become greatly reduced, or in the dead nettle, nearly 



430 431 432 433 



430-433. — Bilabiate corollas : 430, personate flower of snapdragon {after Gray) ; 

 431, ringent corolla of dead nettle; 432, front view; 433, horizontal diagram. 



obsolete. The arched upper lip represents two petals con- 

 fluent into one, a notch in many species (catnip, dittany, 

 snapdragon), indicating the original line of division. 



Some of the names given to sympetalous corollas apply 

 equally to apopetalous ones. Chickweed and moonseed 

 are rotate ; the uvularias, the yucca, and the abutilon of 

 the greenhouses are bell-shaped, or campanulate ; okra 

 and some of the lilies are funnel-shaped. 



The same terms that are used in describing the shapes 

 of foliage leaves are applied to the sepals and petals of 

 flowers. 



SUPPRESSIONS, ALTERATIONS, AND APPENDAGES 



Material is to be sought for out of doors, wherever it may present 

 itself. Specimens of pine, oalc, or other unisexual flowers should be 

 provided for class study. If these are not in season, the mulberry, 

 Osage orange, hop, sycamore, black gum, persimmon, and the gourds, 

 squashes, and melons, furnish good examples of unisexual flowers, one 

 or more of which ought to be examined. 



