ARTIFICIAL ANALYSIS OF THE NATURAL ORDERS. XXXV 



DIVISION III. APETALOUS EXOGENOUS PLANTS. 



Floral envelopes single, consisting of a calyx only, or altogether wanting. 



* Amentaceous trees or shrubs. Flowers monoecious or dicecious. 



* Sterile flowers only in aments. 



Leaves simple, stipulate. Involucre scaly. Seed entire. CUPULIFER&:, 420 



Leaves pinnate, exstipulate. Involucre none. Seed 4-lobed. JUGLANDACEJS, 418 



H- Both the sterile and fertile flowers in aments. 



Aments globose. Calyx none. 



Fruit 2-beaked. 2-valved, many-seeded. Sterile aments spiked. 

 Fruit nut-like, 1-seeded, hairy. Aments single. 

 Aments oblong or linear. 

 Ovary 1-celled. Drupe 1-seeded. Stipules none. 



Capsule 2-valved, many-seeded. Seed comose. 

 Ovary 2-celled. Fruit dry, angled or winged. 



Fruit enclosed in the confluent berry-like calyx. 



# * Flowers not in aments. 

 4- Calyx and corolla none. 



HAMAMELACE.E, 156 

 PLATANACE^E, 417 



MYRICACE.E, 426 

 SALICACE^I, 429 

 BETULACE^:, 428 



SAURURACE.E, 397 



Ovaries 3-4, united below. Flowers perfect, spiked. 



Ovary single. 



Involucre none. Capsule 4-celled. Aquatic. CALLITRICHACE^, 398 



Involucre spathe-like. Styles 2. Leaves alternate, parted. PODOSTEMACE^E, 399 



Involucre 8 - 12-parted. Style one. Leaves whorled, forked. CERATOPHYLLACE^, 398 

 Involucre 4 - 5-toothed. cup-like, containing one fertile flower and 



several sterile ones, each reduced to a single stamen. EUPHORBIACE^, 399 



t- -t Calyx herbaceous or corolla-like. 

 Ovaries more than one. 



Stamens inserted on the calyx. Leaves stipulate. 

 Stamens hypogynous. Stipules none. 

 Embryo minute. 

 Embryo and seeds large, curved. 

 Ovary solitary. 

 Calyx adherent to the ovary. 

 Ovary 1-celled. 



Fruit a 2-valved, many-seeded capsule. 

 Fruit indehiscent, 1-seeded. 

 Anthers (and stigma) sessile. Tree parasites. 

 Anthers on filaments. 



Drupe berry-like. Stigma decurrent. 

 Drupe dry. Albumen copious. 

 Drupe dry. Albumen none. 

 Ovary 6-celled, many-ovuled. Calyx tubular. 

 Ovary 4-celled, many-ovuled. Stigma capitate. 

 Ovary 3-celled, 3-ovuled. Stigmas 3. Leaves dissected. ' 

 Ovary 2 - 3-celled. Capsule 2-valved. Leaves alternate. 



Fruit a berry. Leaves opposite. 

 Calyx free from the ovary. 

 Ovary 1-celled. 

 Ovules and seeds numerous. 

 Vines. Fruit berry-like. 

 Stems erect. Capsule circumscissile. 



ROSACES, 117 



RANITNCULACEa:, 2 

 MENISPERMACE^:, 15 



SAXIFRAGACE.E, 151 

 LORANTHACEJE, 397 



CORNACE,E, 167 

 SANTALACE.E, 395 

 COMBRETACE^:, 136 

 ARISTOLOCHIACE.E, 371 



ONAGRACKE, 137 



HAMAMELACE^:, 156 

 MYRTACRE, 130 



PASSIFLORACE^I, 147 

 CELOSIE.E, 379 



