o POLTPETALJE. 



Styles 2 or 3: sepals 5: petals 5: stamens 5 or 10: leaves petioled . . Saxifragacege, 54 



Styles 2 to 5: sepals 5: petals 5: stamens 5: leaves sessile !Linacea9, 35 



Style 3-cleft: sepals 2: petals 5: fleshy leaves Portulacaceae, 31 



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



Stamens 10, included by the cohering lower pair of petals lieg^miiiosse, Z9 



Stamens 5: anthers united: lower petal spurred ViolacesB, 26 



Stamens 6, united in 3's: petals 4, in pairs Fumariaceae, 19 



Stamens 6, unequal, distinct or 2 united StreptanthuSf 22 



Stamens 6 to 8, united: ovary 2-celled: leaves entire PolygalacesB, 26 



d. Herbs: leaves ojyposiU, simple^ except in the last. 



Style 3-cleft: stamens 3 to 5: leaves a single pair. Portulacaceaa, 31 



Style none, stigmas 3: stamens 10 to 12: petals 6: leaves in 3's. . Papaveraceee, 18 



Styles 3: flowers sessile: stamens 4 to 7: leaves re volute Frankeniaceae, 27 



Styles 3: flowers in axillary clusters: stamens 3 to 5 MoUmjo, Go 



Styles 2 to 5: capsule 1-celIed: stamens 10 or 6 CaryophyllaceaE), 27 



Styles 2: capsule 4 celled: stamens 5 Linaceoe, 35 



Styles 4 or 5: small white flowers in terminal clusters Saxifragaceae, 54 



Style 1 : stamens on the slightly cohering rotate petals PrimulaceaB, 76 



Styles and other flower parts each 2 to 5 (stamens rarely twice \ Tn„ + - 



as many) / 



33 



Styles or stigmas 5: 5 akenes separating when ripe QeraniaceaB, 36 



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 KhamnaceaB, 37 



Sepals petaloid: ovary globose; styles or stigmas 2 Saxifrag'acea9, 64- 



Sepals, petals and stamens 4 each: the flowers in cymes or in 1 ^ 



heads with a white involucre / ^ornacess, GC 



Herbs. Sepals 5: petals 5: styles 2 to 6: leaves simple Saxifragace^, 54 



Flowers or flower clusters axillary. 



Flower parts in 2'3 or 4's, small: aquatic: leaves whorled Halorageae, 59 



Flower parts in 4*8 (rarely in 2's or G's): style 1 Onagracese, 59- 



Flowers monoecious: climbing by tendrils Cucurbitaceee, 64 



Flowers in umbels or heads not axillary. 



Flowers in umbels or heads: petals 5: stamens 5. 



Styles 2: fruit dry UmbelliferEB, 65 



Styles 2 to 5: fruit juicy AraliacGEB, 13 



Flowers in a head with iovolucre of 4 white leaves ComacesB, 66 



