120 PRACTICAL BOTANY. 



75. Peduncle of the cyme adnate to the midrib of a 

 large, leaf -like bract. Each cluster of stamens attached to 

 the base of one of the j^etaloid bodies, which are placed op- 

 posite the petals. Leaves cordate, serrate. Trees. 



Linden. Tilia. 



Bracts of this sort none 76 



76. Calyx of 5 roundish, concave sepals. Ovary free. 

 Fruit a 5-celled, 5-valved pod, with 2-8 seeds in each cell. 

 Flowers large, white, peduncled, axillary. Leaves lanceo- i 

 late, oblong, minutely serrate, coriaceous. 



Gordonia Lasianthus, L. 



Calyx 5-cleft, its tube coherent with the lower part of 

 the 3-celled ovary. Fruit a 1 -celled, 1 -seeded, dry drupe. 

 Flowers small, yellow, 6-14 in close, bracted clusters, fra- 

 grant. Leaves elliptical, acuminate, obscurely dentate, thick. 



Symplocos tinctoria, L'Her. 



"77, (5.) Flowers with a double set of perianth, calyx, and 

 corolla 78 



Flowers with only one set of perianth, or with no pe- 

 rianth at all 537 



78, Corolla gamopctalous ..320 



Corolla polypetalous 79 



A. COROLLA POLYPETALOUS. 



(79-319.) 



79, Ovaries, 1 or several, free in the bottom of the calyx, 

 or nearly so ; ovaries superior 80 



Ovaries, 1 or several, with the calyx -tube either adhe- 

 rent to, or constricted over them ; ovaries inferior 273 



80, One ovary, simple or compound, with one or several 

 styles or stigmas 81 



Several ovaries, with as many styles or stigmas.. 262 



81, Corolla regular (or nearly so) and not spurred. . . .82 



Corolla irregular (parts obviously unequal or dissim- 

 ilar) or spurred 218 



