POLYPETAL^. ' 

 * * Piitil only one, simple or compound. 



a. Shrubs, trees or woody climbers. 

 Style and stigma oce. 



Sepala, petals and stamena 6 each, opposite each other Berberidaceas, 1 7 



Sepals, petals and stamens 4 or 5 each (or stamens 8 in 1st), 



Strongly aromatic or heavy-scented Rutacees, 36 



Not aromatic: leaves simple, opposite CelastraceeB, 37 



A vine climbing by tendrils VitacesB, 38 



Calyx 2-lipped: petals unequal : stamens 5-8, exserted SapindacesB, 38 



Calyx 4 toothed: petals 2: stamens 2 to 4: fruit winged Oleaceas, 77 



Calyx 4-oleft: petals 4: stamens 6: ovary long-stiped Isomevis, 25 



Calyx 4-toothed: petals 5, unequal: stamens 10 Leguminosse, 39 



Sepals 3 or 5, unequal: stamens 4 to 8, united below Polygalacesa, 26 



Styles or stigmas more than one. 



Styles 2: leaves opposite: fruit 2-winged Sapindaceae, 38 



Styles 3-cleft: stamens 5, opposite small petals Khamnaceas, 37 



Stigmas 3: leaves alternate, 3-foliolate or simple Anacardiaceas, 39 



Stigmas 4 or 5: prostrate stems hardly woody Sa^cifragacese, 54 



Stigma 5-lobed: small shrub: leaves opposite or whorled BricacesB, 7i 



6. Herbs: leaves tnostly or aU radical. 



Stamens 1 or 3: sepals 2: petals 2 to 5: stigmas 2 or 3 Fortulacacese, 31 



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



Stamens 5, opposite the petals. Sepals 2: style 3-cleft PortulaoaceSB, 31 



Sepals colored, united: styles 5. . Plumbaginaceae, 57 



Stamens, sepals and petals 5 each: styles 3 or 6: very glandular. . Droseraceae, 58 



Stamens 5 or 10, on the calyx: style 2 or 3 SaxifragacesB, 54 



Stamena 10, on the receptacle: stigma 5-lobed Ericaceae, 71 



Stamena 10, styles 5: leaves 3-foliolate Ozalis in Gerauiaceas, 36 



Stamens 6 united in 3's: sepals 2: petals 4 in unequal pairs Fumariacese, 19 



Stamens 6: flowers nodding on a scape Vancouveria in Berberidaceas, 17 



c. Herbs: leaves aUenuOe. 



Corolla regalar (petals alike) or nearly so. 



Stigma 1, often 2-lobed: stamens 6 (2 and 4) Cruciferaa, 19 



stamens 6, equal: ovary on a stipe Capparidaceae, 25 



stamena 4 to 7 and as many petals on the calyx Iiythraoess, 59 



Stigma 2-lobed: stamens 4: petals 2: sepals 2, white Maiantliemum, 119 



Stigmas 5: sepals 5: petals 5: stamens 10 Geraniaces, 36 



