XXXU SYNOPSIS OF THE NATTJKAL OBDERS. 



63 Sepals petal-like, deciduous. Anthers extrorse. 



i. Sanunculaceis (Caltha). 

 Sepals petal-like, persistent. Anthers introrse. 



i. Hanuncutacecs (Pseonia). 



64 Fruit separating into several carpels. No perianth. ... 65 

 Fruit not separating into carpels 56 



65 Carpels 4, not bursting. Stamen 1. 



Ixxiv. Callitrichacecs. 

 Carpels 3 or 2, opening, separating with elasticity. 



Ixxii. Euphorhiaee<e. 



66 Leaves with stipules 67 



Leaves without stipules 68 



67 Stipules sheathing the stem Ixvi. Polygonacece. 



Stipules attached to the petiole. 



xxvi. Mosacees (Sanguisorbese). 

 Stipules free, deciduous. Ovary 1-celled. Perianth 



4 — 5-parted Ixxv. Urticacea. 



Stipules free, deciduous. Ovary 2-celled. 



Ixxvii. Ulmacem. 



Stipules free, deciduous. Ovary 1-celled. Female 



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



68 Flowers moncEcioua or dioecious 69 



Flowers perfect or polygamous 60 



59 Fruit fleshy. Male fl. each of one 2-celled naked sta- 



men, crowded together on a spadix. 



xciii. AracecB (Arese). 

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

 bricated in several rows Ixxi. JSmpetraceas. 



Fruit dry. Stamens 3 or more. Perianth tubular. 



Ixvii. Elceagnacem, 

 Fruit dry. Stamens 12—20. Perianth 10— 12-clef t. 



Ixxiii. Ceratophyllacea. 



60 Perianth hardened over the fruit. 



xiv. Cai-yopliyllacecB (SclerantheBs). 



Perianth not hardened over the fruit 61 



Perianth none. Fruit compressed linear and leaflike at 

 the end xlix. Oleacece (Fraxiuus). 



61 Perianth 3 — 6-cleft, herbaceous . .Ixv. Chenopodiacees. 



Perianth 3-cleft, scarious Ixiv. Amaranthacem. 



Perianth tubular. Stamens perigynous. 



Ixviii. Thymelaceee. 



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



gynous Ixxx. Trilliacece. 



62 Leaves net-veined. Floral envelopes whorled 63 



Leaves net-veined. Perianth none. Fl. monoecious, 



on a spadix xoiii. Araceee (Areas). 



