ANALYTICAL KEY TO FAMILIES OF ANGWSPERMS. Xlll 



PAGE 



hh Terrestrial plants. 



i Stamens 6 Amaryllidaceae 278 



ii Stamens 3. 



/ Stamens opposite outer perianth-lobes; flowers showy..lRiDACEAE 281 

 jj Stamens opposite inner perianth-lobes 

 k Flowers numerous, small, yellowish; plant stout. 



Haemodoraceae 278 



kk Flowers 1-3, blue; plant very slender Burmanniaceae 289 



gg Leaves, if linear, not parallel-veined and with a midrib. 

 h Ovary 1 -celled. 



i Flowers borne on a fleshy spike inclosed in a spathe Araceae 229 



ii Flowers cymose, umbellate or solitary; no spathe ... S ant ALACEAE 345 

 hh Ovary 3-4-celled. 



i Vines Dioscoreaceae 281 



ii Aquatic or amphibious plants Haloragidaceae 664 



hhh Ovary 6-many-celled Aristolochiaceae 347 



bb WOODY PLANTS. 

 c Stamixate Flowers in Catkins, pistillate not; moncecious. 



d Ovary i-celled or incompletely 2-4-celled Juglandaceae 322 



dd Ovary 3-7-celled Fagaceae (in Cupuliferae) 330 



cc Both Stamixate and pistillate Flowers in Catkins; moncecious; 



Ovary 1-2 -celled Betulaceae (in Cupuliferae) 326 



ccc Flowers not in Catkixs. 

 d Leaves opposite or whorled. 



e Flowers umbellate Araliaceae 667 



ee Flowers not umbellate, though first divisions sometimes clustered. 

 f Corrolla wanting. 



g Parasitic on trees Loranthaceae 344 



gg Not parasitic Cornaceae 689 



ff Corolla present. 



g Leaves stipulate or whorled Rubiaceae 860 



gg Leaves opposite, without stipules. 



h Petals united , . Caprifoliaceae 869 



hh Petals distinct. 



i Stamens 8 or more Hydrangeaceae (in Saxifragaceae) 484 



ii Stamens 4 Cornaceae 689 



dd Leaves alternate. 



e Flowers umbellate, minute, greenish Araliaceae 667 



ee Flowers not umbellate. 

 / Corolla absent 

 g Ovary 1 -celled. 



h Ovules 1 in each cell; stamens 5-15 Cornaceae 689 



hh Ovules 2-4 in each cell; stamens 3-6. . . Santalaceae 345 



gg Ovary 2-celled, stamens many .Hamamelidaceae 488 



ff Corolla present, but calyx-limb often nearly obsolete. 

 g Corolla perigynous. 

 h Stamens 4-5. 

 i Flowering in early summer .Grossulariaceae (in Saxifragaceae) 486 



ii Flowering in late fall Hamamelidaceae 488 



hh Stamens many. 



* Ovary 2-10-celled Pomaceae (in Rosaceae) 514 



ii 1 -many separate carpels present Rosaceae 490 



"g Corolla epigynous. 



h Filaments more or less united below Styraceae 722 



hh Filaments distinct. 



* Petals distinct; ovary 1-2-celled Cornaceae 689 



ii Petals distinct; ovary 4-5 -celled. 



Oxycoccus in Vacciniaceae (in Ericaceae) 711 

 Hi Petals united; ovary 2-10-celled. .Vacciniaceae (in Ericaceae) 707 



