33 



APETALOUS EXOGENS. 



68. Flowers not in aments. 70 



Flowers in aments. Trees or shrubs. 



Leaves opposite, simple. St animate and pistillate flowers on dif- 

 ferent plants; both kinds in aments. Stamens four. Ovary 

 one celled, with two ovules. Fruit a berry, crowned with the 

 two persistent styles. California shrubs. GARRYACE/E. p. 167. 



Leaves alternate. 



Leaves pinnate. Stipules none. Staminate flowers in aments. 



Calyx adherent to the ovary. JursLANDACEjE. p. 300. 

 Leaves simple. 



Staminate rlowers with a single stamen. Leaves evergreen. Peri- 

 anth very small, four parted. Stigmas two or three. Tropical 

 trees or shrubs. LACISTEMACK K. 



Stamens two or more. , 



Style wanting. 69 



Style present, though sometimes very short. 



Ovary adherent to the scale-like perianth, with two cells or more, 

 but becoming at length a one-celled, one-seeded fruit, which is 

 partly or wholly inclosed in the cup-like or leaf-like involucrum. 

 Style undivided. Stigmas two or more. Monoecious. 



CUPULIFER^:. p. 302. 

 Perianth none. 



Style single, very short, with two long, spreading, rough stigmas. 

 Ovule single, erect, orthotropous. Commonly monoecious. Leaves 

 with resinous dots, aromatic. MYRICACE.K p. 305. 



Styles two or more. 



Styles distinct, persistent. Ovary two celled. Ovules numerous. 



Leaves with stipules of short duration. Seeds peltate, winged. 



Mona'cious. ALTINGIACK.K. 

 Styles more or less united. Stigmas two or three lobed. Seeds 



numerous, hairy or downy. Dioecious. SALICACE/E. p. 307. 



