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 diacious. 



^- Sterile flowers only in aments. 



Leaves simple, stipulate. Involucre scaly. Seed entire. CUPULIFER^, 420 



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



HAMAMELACE^, 156 

 PLATANACEiE, 417 



MTRICACE.E, 426 



SALICACE.E, 429 



BETULACE.E, 428 



HORACES, 414 



H- ^- Both the sterile and fertile Jloivers 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 l-.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. 

 ■It- Calyx and corolla none. 



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



Ovary single. 



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



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



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



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



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



+- 1- 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. i 



Ovary 3-celIed, 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. 



ROSACE.E, 117 



RANUNCULACEiE, 2 

 MENISPERMACE^, 15 



SAXIFRAGACE^, 151 



LORANTHACE^, 397 



CORNACE^, 167 



SANTALACE.E, 395 



COMBRETACEiE. 136 



ARISTOLOCHIACE-E, 371 



ONAGRACEiE, 137 



HAMAMELACE^, 156 

 MYRTACE.^, 130 



PASSIFLORACEJE, 147 

 CELOSIE^, 379 



