XXxii STtfOPSIS OF THE NATUEAL OEDBES. 



53 Sepala petal-like, deciduous. Anthera extrorse. 



i. Ranuncidacecs (Oaltha). 

 Sepals petal-like, persistent. Anthers introrse. 



i. Ranunmilacece (Pseonia). 



54 Fruit separating into several carpels. No periaiitli. ... 65 

 Fruit not separating into carpels 56 



55 Carpels 4, not bursting. Stamen 1. 



Lxxiv. CallitricliacecB. 

 Carpels 3 or 2, opening, separating with elasticity. 



Ixxii. Euphorhiacecs. 



56 Leaves -with stipules "' 



Leaves without stipules 58 



57 Stipules sheathing the stem_ IxvL Polygmacem. 



Stipules attached to the petiole. 



xxvi. Mosacecs (Sanguisorbese). 

 Stipules free, deciduous. Ovary 1-celled. Perianth 



4 — 5-parted Ixxv. Urticacece. 



Stipules free, deciduous. Ovary 2-celled. 



Ixxvii. Ulmacece, 



Stipules free, deciduous. Ovary 1-celled. Female 



perianth scale-like, open . . . .Ixxvi. Canndbinacem. 



68 Flowers monoecious or dicEcious 59 



Flowers perfect or polygamous 60 



■59 Fruit flesTiy. - Male fl..each of .one 2-ceIled naked sta- 

 men, crowded together on a spadix. 



xoiii. Aracem (Arese). 

 Fruit fleshy. Stamens 2 or 3. Perianth of scales im- 

 bricated in several rows Ixxi. JEmpelracea. 



Fruit dry. Stamens 3 or more. Perianth tubular. 



Ixvii. ElcBagnace<s. 

 Fruit dry. Stamens 12—20. Perianth 10— 12-cleft. 



Ixxiii. Ceratophyltacea. 



60 Perianth hardened over the fruit. 



xiv. Caryophfilacem (Scleranthese). 



Perianth not hardened over the fruit 61 



Perianth none. Fruit compressed linear and leaflike at 

 the end xlix. Okaeeee (Fi'axinus). 



61 Perianths — 5-cleft, herbaceous ..Ixv. Chenopodiacece. 



Perianth 3-cleft, scarious Ixiv. Amaranthace<s. 



Perianth tubular. Stamens perigynous. 



Ixviii. ThymelacecR^ 



Perianth 6 — 8-parted, herbaceous. Stamens hypo- 



gynous Ixxx. Trilliacecs. 



