ANALYTICAL KEY TO FAMILIES OF ANGIOSPERMS. xiii 



PAGB 



hh Terrestrial plants. 



* Stamens 6 ....... AMARYLLIDACEAE 278 



ii Stamens 3. 



j Stamens opposite outer perianth -lobes; flowers showy.. IRIDACEAE 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 i -celled. 



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



ii Flowers cymose, umbellate or solitary; no spathe. . .SANTALACEAE 345 

 hh Ovary 3~4-celled. 



i Vines DIOSCOREACEAE 281 



ii Aquatic or amphibious plants HALORAGIDACEAE 664 



hkh Ovary 6-many celled ARISTOLOCHIACEAE 347 



bb WOODY PLANTS. 

 c STAMINATE FLOWERS IN CATKINS, PISTILLATE NOT; MONOECIOUS. 



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



dd Ovary 3-7-celled FAGACEAE (in CUPULIFERAE) 330 



cc BOTH STAMINATE AND PISTILLATE FLOWERS IN CATKINS; MONOECIOUS; 



OVARY 1-2 -CELLED BETULACEAE (in CUPULIFERAE) 326 



ccc FLOWERS NOT IN CATKINS. 

 d Leaves opposite or whorled. 



e Flowers umbellate , ARALIACEAE 667 



ee Flowers not umbellate, though first divisions sometimes clustered. 

 / 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. 



* 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 i -celled. 



h Ovules i 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 perigy nous. 

 h Stamens 4-5. 

 i Flowering in early summer .GROSSULARIACEAE (in SAXIFRAGACEAE) 486 



ii Flowering in late fall HAMAMELIDACEAE 488 



hh Stamens many. 



i Ovary 2-io-celled POMACEAE (in ROSACEAE) 514 



ii i-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 



U Petals distinct; ovary 4-5 -celled. 



Oxy coccus in VACCINIACEAE (in ERICACEAE) 711 

 Hi Petals united; ovary 2-io-celled. .VACCINIACEAE (in ERICACEAE) 707 



