12 POLYPETAL^E. 



c. Herbs: leaves alternate. 

 Corolla regular (petals alike) or nearly so. 



Stigma 1, often 2-lobed: stamens 6 (2 and 4) rarely 4 Cruciferae, 21 



stamens 6, equal: ovary on a stipe Capparidacese, 23 



stamens 4 to 7 and as many petals on the calyx Lythracese, 38 



Stigma 2-lobed: stamens 4: petals 2: sepals 2, white Liliaceae, 73 



Stigmas 5: sepals 5: petals 5: stamens 10 Geraniaceae, 28 



Styles 2 or 3: sepals 5: petals 5: stamens 5 or 10: leaves / .,. ,, 



petioled ) 



Styles 2 to 5: sepals 5: petals 5: stamens 5: leaves sessile Innaceae, 28 



Style 2-3 cleft: sepals 2: petals 5 (rarely 2 or 4) : fleshy leaves . Portulacaceae, 26 

 Corolla irregular (petals not all alike): style one. 



Stamens 10, included by the cohering lower pair of petals. . .Leguminosae, 30 



Stamens 5, anthers united: lower petal spurred Violacese, 23 



Stamens 6, united in 3's: petals 4 Fumariaceae, 20 



Stamens 6, unequal, distinct or 2 united Cruciferae, 21 



Stamens 6 to 8, united: ovary 2-celled: leaves entire Polygalaceae, 24 



d. Herbs: leaves opposite, simple except in the last. 



Style 3-cleft: stamens 3 to 5: leaves a single pair Portulacaceae, 26 



Style none, stigmas 3: stamens 10 to 12: petals 6: leaves in 3's . Papaveraceae, 19 



Styles 3: flowers sessile; stamens 4 to 7: leaves revolute .. .Frankeniaceae. 24 



Styles 3: flowers in axillary clusters: stamens 3 to 5 Ficoideae, 43 



Styles or stigmas 2 to 5: capsule 1-celled: stamens 10 or 5 . Caryophyllaceae, 24 



Styles 2: capsule 4-celled: stamens 5 Linaceae, 28 



Styles 4 or 5: small white flowers in terminal clusters Saxifragaceae, 36 



Style 1: stamens on the slightly cohering rotate petals Primulaceae, 49 



Styles and other flower parts each 2 to 5 (stamens rarely ) ^, . 2 p 



twice as many) f 



Styles or stigmas 5: 5 akenes separating when ripe Geraniaceae, 28 



2. Ovary and fruit inferior or mainly so. 



Shrubs: sepals, petals and stamens each 4 or 5: leaves simple. 



Stamens opposite the small clawed petals: style 3-cleft ..Bh.amna.ceae, 29 



Sepals petaloid: ovary globose: styles or stigmas 2 Saxifragaceae, 36 



Sepals, petals and stamens 4 each: the flowers in cymes or in Icornaceae 44 



heads with a white involucre i 



Herbs. Sepals 5: petals 5: styles 2 to 5: leaves simple Saxifragaceae, 36 



Flowers or flower clusters axillary 



Flower parts in 2'sor 4's, small: aquatic: leaves whorleJ.Halorageae, 38 



