1014 



SYNOPSIS OF THE CLASSES, 



Cohort XXX. Urticales. Flowers diclinous, $ in Ulmacerc. Perianth green, 

 usua'ly regular, rarely 0. Stamens opposite the perianth-lobes or sepals. Ovary superior, 

 1-celled (2-celled in Ulmacex) ; stigmas 1-2 ; ovule solitary, micropyle always superior. 

 Fruit usually an achene or samara. Embryo straight, albuminous or not. 



102. URTICE.E. Flowers diclinous or poly- 

 gamous. Perianth various, imbricate or val- 

 vate, rarely 0. Stamens usually equal to the 

 perianth-lobes; filaments uncoiling elatic- 

 ally. Style simple or imutifid. Ovule erect, 

 orthotropous, Embryo straight, albuminous. 

 Herbs, rarely trees; juice limpid; leaves 

 stipulate ....... 



103. MORE.*. Flowers diclinous, minute, 

 often on an open or closed receptacle. Peri- 

 anth tubulnr or 3-4-partite or 0. Stamens 

 as in Vrticetr, but filaments sometimes 

 straight. Styles 1 or 2 ; ovule various. Em- 

 bryo straight or curved, albuminous or not. 

 Trees or shrubs; juice milky; leaves al- 

 ternate ; stipules large, fugacious . 



104. CELTTDEJE. Flowers polygamous. Pe- 

 rianth 5-partite, persistent, imbricate. Sta- 



003 



GOO 



niens as in Urticete. Styles 2 ; ovule basilar, 

 campylctropous. Embryo curved ; albumen 

 scanty or 0. Trees; juice watery; leaves 

 alternate ; stipules fugacious . . . C73 



105. CANNABI1TB2& Flowers diclinous. 

 Perianth <$, sepals 5, free, imbricate; $, 

 various. Stamens 4, opposite the sepals; 

 filaments short. Styles 2; ovule pendulous, 

 campylotropous. Embryo hooked or coiled, 

 exalbuminous. Herbs; juice watery; leaves 

 stipulate ....... 074 



100. ULMACKJE. Flowers $. Perianth 

 campanuhite, persistent, 4-8-tid. Stamens 

 opposite the perianth-lobes ; anthers extrorse. 

 Ovary 1-2-celled ; styles 2; ovules 1 pendu- 

 lous in each cell. Embryo straight, exulbu- 

 minous. Trees; juice watery; leaves alter- 

 nate ; stipules fugacious .... 676 



Cohort XXXI. Amentales. Flowers diclinous, in catkins, cones or heads. Perianth 

 0, or calyciform, or of one or more bristles, bracts, bractcoles or scales. Ovary superior, 

 1-2-celled. Seeds exalbuminous. Trees or shrubs ; leaves alternate, simple. 



107. BETULACEJE. Flowers montecious, 

 in slender catkins. Perianth <$ a 4-lobod 

 cup or scale ; $ of accrescent scales. Ovary 

 with 2 2-ovuled cells; styles 2; ovules pen- 

 dulous, anatropous. Radicle superior. 

 Leaves stipulate ...... 



108. PLATAWE.B. Flowers monoecious, in 

 globose catkins. Perianth and 2 of slender 

 scales or bristles. Ovary 1-celled ; style 1 ; 

 ovule 1, pendulous, orthotropous. Radicle 

 inferior. Leaves alternate ; stipules leaf- 

 opposed, sheathing ..... 



100. MYRICE.E. Flowers mon- or di- 

 oecious, in long or short catkin?, sessile in 

 the axils of scales. Perianth 2 0, or of scales 



077 



070 



or bracts. Ovary 1-colled ; styles 2 ; ovule 

 1, erect, orthotropous. Radicle superior. 

 leaves alternate, stipulate or not . . . 681 



200. CASUARINE.E. Flowers mon- or di- 

 oecious; $ in catkins, monandrous, 4-brac- 

 teate ; $ in heads, bracteate and 2-bracteolate. 

 Ovary 1-cellt d ; ovules geminate, semi-anatro- 

 pous. Radicle superior. Leafless trees, with 

 slender jointed branches ; joints ending in 

 toothed sheaths 083 



201. SALICINK.E. Flowers dioecious, in 

 the scales of catkins ; <$ of a 1-celled ovary, 

 with several basal anatropous ovules; stigma 

 2-3-lobed. Seeds comose. Radicle inferior. 



Leaves stipulate 685 



Cohort XXXII. Euphorbiales. Flowers $ or diclinous. Perianth various or 0. 

 Ovary superior, 2-x -celled ; ovules l-oo in each cell, pendulous, auatropous. Fruit 

 usually capsular, 1 oo -celled ; cells l-oo -seeded. 



202. EUPHORBIACE^. Flowers diclinous. 

 Perianth various or 0, sometimes dichlamy- 

 deous. Anthers usually globose or didymous. 

 Ovary 3- (rarely 1-2- or oo-) celled; ovules 

 solitary or geminate in each cell, usually 



operculate. Fruit usually 3-coccous, rarely 

 a berry. Embryo straight in copious albu- 

 men. Herbs, shrubs or trees; leaves usually 

 alternate and 2-stipulate .... 087 

 203. BUXINE.E. Flowers monoecious. Se- 



