ARTIFICIAL ANALYSIS OF THE NATURAL ORDERS. 



Division III. APETALOUS EXOGENOUS PLANTS. 



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



* Amentaceous trees or shrubs. Flowers monczcious or dioecious. 



■>- Sterile flowers only in aments. 



Leaves simple, stipulate. Involucre scaly. Seed entire. CUPULIFERJE, 420 



Leaves pinr_?te, exstipulate. Involucre none. Seed 4-lobed. JUGLANDACEiE, 418 



IIAMAMELACE.E, 156 

 PLATANACE.E, 417 



MYRICACE^ 426 



SALIC ACE.E, 429 



BETULACE.E, 428 



MORACKE, 414 



-i- t- 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. 

 -t- Calyx and corolla none. 



Ovaries 3-4, united below. Flowers perfect, spiked. SAURURACE^E, 397 



Ovary single. 



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



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



Involucre 8 - 12-parfed. Style one. Leaves whor led, forked. CERATOPHYLLACE.E, 398 



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



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



*- *- 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, manyovuled. Calyx tubular. 

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



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

 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. 



ROSACEA, 117 



RANUNCULACE.E, 2 

 MENISPERMACE^, 15 



SAXIFRAGACE.E, 151 



LORANTHACEiE, 397 



CORNACE.E, 167 



SANTALACE.E, 395 



COMBRETACEiE. 136 



ARISTOLOCHIACE.E, 371 



ONAGRACEJv 137 



HAMAMELACEJS, 156 



MYRTACEJS, 130 



PASSIFLORACE^E, 147 

 CELOSIEiE, 379 



