5 POLYPETAL^ 



Styles 2 or 3: sepals 5; petals 6: stamens 5 or 10; leaves petioled . . SaxifragaoesB, 54 



Styles 2 to 5: sepals 5: petals 5: stamens 5: loaves sessile liinaoess, 35 



Style 3-oleft: sepals 2: petals 5: fleshy leaves PortulacacesB, 31 



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



Stamens 10, included by the cohering lower pair of petals liegumiiiosEB, 39 



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



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



Stamens 6, unequal, distinct or 2 united StreptarUkua, 22 



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



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



Style 3-oleft: stamens 3 to 5; leaves a single pair PortulacaceBB, 31 



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



Styles 3: flowers sessile: stamens 4 to 7; leaves revolute Frankenlacese, 27 



Styles 3: flowers in axillary clusters: stamens 3 to 5 Molkigo, 65 



Styles 2 to 5: capsule 1-celled: stamens 10 or 5 CaryophyllaoesB, 27 



Styles 2: capsule 4-celled: stamens 6 Iiinaceas, 35 



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



Style 1 ; stamens on the slightly cohering rotate petals PrimulacesB, 76 



Styles and other flower parts each 2 to 5 (stamens rarely twice \ Tjlatinaceai 



i many) / 



33 



ee 



Styles or stigmas 6: 6 akenes separating when ripe. Oeraniacese, 36 



2. Ovary and fruit inferior or znainly so. 



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



Stamens opposite the small clawed petals: style 3-cleft IMiamnacese, 37 



Sepals petaloid; ovary globose; styles or stigmas 2 Saxi£ragaceSB, 64 



Sepals, petals and stamens 4 each; the flowers in cymes or inl — 



heads with a white involucre / CornacesB, 



Herbs. Sepals 5: petals 5: styles 2 to 5: leaves simple SazifragacCEe, 54 



Flowers or flower clusters axillary. 



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



Flower parts iu 4's (rarely in 2's or 6's): style 1 OnagraoesB, 59 



Flowers moncecious : climbing by tendrils Cucurbitaceee 64 



Flowers in umbels or heads not axillary. 



Flowers in umbels or heads: petals 5; stamens 6. 



Styles 2: fruit dry TJmbelliferaB, 65 



Styles 2 to 5: fruit juicy Axaliacese, 13 



Flowers in a head with involucre of 4 white leaves CornacesB 66 



