ARTIFICIAL ANALYSIS OF THE NATURAL ORDERS. 



Division IIL APETALOUS EXOGENOUS PLANTS. 



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



m Amentaceous trees or shrubs. Flowers monacious or diaciotts. 



■I- Sterile flowers otUi/ in aments. 



Leaves* si ID pie, stipulate. Involucre scaly. Seed entire. CTJPULIFER^, 420 



Leaves pinnate, oxstipulate. Involucre none. Seed 4-lobed. 



JUGLANDACE^, 418 



HAMAMELACEiE, 156 

 PLATANACE^, 417 



MTRICACE^, 426 



SALICACE^, 429 



BETULACE^, 428 



HORACES, 414 



•t- -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, l-seeded, hairy. Aments single. 

 Aments oblong or linear. 

 Ovary 1-eelled. Drupe l-seeded. Stipules none. 



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

 Ovary 2-ceIlecl. Fxuit dry, angled or winged. 



Fruit enclosed in the confluent berry-like calyx. 



* * Flowers not in aments.. 

 •*- 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. FODOSTEMACE^, 399 



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



Involucre 4-6-toothed, cup-like, containing one fertile flower and 



several stedle ones, each reduced to a single stamen. EUPHORBIACE^, 3^9 



•h- -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-celIed. 

 Fruit a 2-valved, many-seeded capsule. 

 Fruit indehiscent, l-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-ceIIed. many-ovuled. Calyx tubular. 

 Ovary 4-eelled, 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-eelled. 

 Ovules and seeds numerous. 

 Vines. Fruit berry-like. 

 Stems erect. Capsule clrcumsclsslle* 



ROSACEA, 117 



RANUNCULACE^, 2 

 MENISPERUACE^, 15 



SAXIFRAGACB.a:, 151 



LORANTHACE.®, 397 



CORNACE^, 167 



SANTALACE^, 395 



COMBRETACE^, 186 



ARISTOLOCHIACE^, 371 



ONAGRACE^, 137 



HAMAMELACEJE, 156 

 MYRTACE.aJ, 130 



PASSIPLORACE^, 147 

 GELOSIE^, 379 



