INTRODUCTION TO BOTANY. Ixi 



Gen. Tulipa. Fritillaria. Scilla. Gagea. Ornithoga- 

 lum. Allium. 



The bulbs of this family usually contain a mixture of a mild, 

 gummy, extractive substance, which is bitter, volatile, acrid, 

 but dissipated by heat. 



CLASS IV. 



Monoepigyny, or Monocotyledonous, and Epigynous. 



11. Narcissece, Amarillidece, BR. 



Gen. Narcissus. Leucoiura. Galanthus. The bulbs of 

 these more or less acrid ; in small doses emetic. 



12. Iridece. Juss. 



Gen. Iris. Crocus. This family easily distinguished by 

 an inferior ovary, and three stamens. 



13. Orchidecs, Orchis Tribe. One of the most natural 

 families. 



Ge7i. Orchis, &c. 



14. Hydrocharidece, Juss. 

 Gen. Stratiotes. Hydrocharis. 



15. NymphcBace(S. Salisb. 



Ge7i. Nymphaea. Nuphar. This family is placed by some 

 among the dicotyledonous plants, near the Papaveracese, or 

 Poppy Tribe. The roots of the Nuphar lutea, mixed with 

 the inner bark of pinus sylvestris may be made into bread. 



//. Dicotyledonous Plants, 



Or those, whose embryo presents two cotyledons. In the 

 coniferae family from three to ten cotyledons are found. 



In the dicotyledons the stem is disposed in concentric layers, 

 the nerves of the leaves are branched : the number five, or 

 one of its multiples prevails in the flower: a calyx and corolla 

 are also very frequently present. 



/. Apetalous Dicotyledons. 

 CLASS y. 



Epistaminy, or Stamens Epigynous. 



16. AristolochiccE. 



Gen. Aristolochia. 'Asarum. 



