SYNOPSIS OF THE FAMILIES 13 



in bud. Petals 4-5 (rarely 8-g or o), imbricate in bud. Stamens usually indefinite, 

 inserted on calyx tube or disk, incurved in bud. Ovary of i or more free or 

 connate carpels. Fruit various. Albumen o. Herbs, shrubs or trees, with 

 usually alternate, stipulate leaves and showy flowers. 



Myrtacee. Flowers regular, 2 sexual. Calyx superior ; limb short, 4-5 

 lobed. Petals 4 or 5, free or united in a capsule. Stamens many, epigynous. 

 Ovary 2-4 celled, cells many ovuled, style simple. Fruit indehiscent, i -many- 

 seeded ; endosperm o. Trees or shrubs with simple, usually gland-dotted leaves. 



Onagraceas. Flowers usually regular, often showy. Calyx lobes 2 or 4, 

 valvate in bud. Petals 2 or 4, twisted in bud. Stamens epigynous, definite. Ovary 

 inferior, 1-4 celled. Seeds many, exalbuminous. Herbs with exstipulate leaves. 



Lythraceae. Flowers regular. Calyx lobes 3-6, valvate in bud. Petals 3-6, 

 crumpled in bud. Stamens definite. Ovary 2-6 celled. Capsule many seeded. 

 Seeds exalbuminous. Herbs with opposite or whorled entire, exstipulate leaves. 



Cucurbitaceae. Flowers regular, i sexual. Calyx 5 toothed. Corolla 5 

 lobed. Stamens 3, epigynous. Ovary inferior, 3 celled, many ovuled. Fruit a 

 large berry. Seeds exalbuminous. Herbs with tendrils and alternate leaves. 



Crassulaceae. Flowers regular. Calyx 4-12 lobed. Petals 4-12. Stamens 

 twice as many as petals (except in Tillaa). Carpels follicular, usually 5, 

 separate. Succulent herbs with small flowers and exstipulate leaves. 



Saxifragaceas. Flowers regular. Calyx 4-5 lobed. Petals 4-5, rarely o, 

 imbricate in bud. Stamens definite. Ovary syncarpous at base. Carpels 

 usually 2, connate; placentas usually axile. Fruit capsular. Seeds albuminous. 

 Herbs with rather small flowers and varied leaves. 



Ribesiaceae. Shrubs. Flowers regular. Stamens definite. Ovary inferior. 

 Placentas parietal. One style. Fruit a berry. 



Haloragacete. Flowers usually apetalous and i sexual. Calyx lobes 2- 

 4, valvate in bud or o. Stamens epigynous, i or more, definite. Ovary inferior, 

 1-4 celled. Seeds albuminous. Usually aquatic or marsh herbs with alternate 

 or whorled leaves and very inconspicuous flowers. 



Cactaceae. Flowers regular, showy. Sepals in many series, gradually 

 passing into petals. Stamens numerous, inserted on a disk which covers the 

 top of the germen. Style i. Stigmas many. Fruit fleshy, of i cell. Plants 

 shrubby and fleshy, with jointed stems. 



Ficoideae. Flowers regular, showy, usually 2 sexual. Sepals 5, inferior. 

 Petals o. Stamens perigynous or hypogynous. Ovary 2-5 celled, or of 5 free 

 i-ovuled carpels. Fruit a capsule, or of 5 free indehiscent carpels. Seeds 

 reniform ; embryo curved round mealy endosperm. Fleshy herbs with simple 

 opposite or whorled leaves. 



** Petals and Stamens epigynous. 



Umbelliferae. Flowers usually regular, umbelled, small. Calyx lobes 5 or o. 

 Petals 5. Stamens 5, incurved in bud. Ovary 2 celled. Styles 2. Fruit of 

 2 separable indehiscent dry carpels. Seeds albuminous. Herbs with alternate 

 leaves often much divided. 



Araliacete. Flowers of Umbelliferee, but shrubs or trees. Ovary often of 

 more than 2 carpels. Fruit of inseparable usually fleshy carpels. Leaves 

 alternate. Flowers usually green. 



Cornaceze. Flowers regular, small. Calyx lobes 4-5 or o. Petals 4-5. 

 Stamens 4-5. Ovary 2 celled, cells i ovuled. Style simple. Drupe 1-2 seeded. 

 Seeds albuminous. Herbs, shrubs or trees, with opposite leaves. 



