POLTPETALJE. ' 



• * Pistil only one, simple or compound. 



a. Shrubs, trees or %ooody climbers. 

 Style and stigma one. 



Sepals, petals and stamens 6 each, opposite each other BerberidacesB, 17 



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



Strongly aromatic or heavy-scented Rutaceae, 3G 



Not aromatic: leaves simple, opposite CelastracesB, 37 



A vine climbing by tendrils Vitaceas, 38 



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



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



Calyx 4-cleft: petals 4: stamens G: ovary long-stiped Isomeris, 'J.') 



Calyx 4-toothed: petals 5, unequal: stamens 10 LeguminosaB, 3'J 



Sepals 3 or 5, unequal : stamens 4 to 8, united below .^Polygalaceae, 2(5 



Styles or stigmas more than one. 



Styles 2: leaves opposite: fruit 2-winged Sapindacese, 33 



Styles 3-cleft: stamens 5, opposite sm.-U petals Rhamnaceae, 37 



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



Stigmas 4 or 5: prostrate stems hardly woody Saxifragacege, 54 



Stigma 5-lobed: small shrub: leaves opposite or whorled Ericaceae, 71 



b. Herbs: leaves mostly or all radical. 



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



Stamens 5, anthers united: lower petal spurred: style 1 .... Violaceae, 2 J 



St-amens 5, opposite the petals. Sopah 2: style 3- cleft Portulacaceae, 31 



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



Stamens, sepals and petals 5 each: styles 3 or C: very glandular. .Droseraceae, 5S 



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



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



Stameps 10, styles 5: leaves 3-foliolate Oxalis in Geraniaceae, 30 



Stamens G united in 3's: sepals 2: petals 4 in unequal pairs Fumariaceae, 19 



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



c. Herbs: leaves alternate. 



Corolla regular (petals alike) or nearly so. 



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



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



stamens 4 to 7 and as many petals on the calyx Lythraceae, 59 



Stigma 2-lobed: btaniciis 4: petals 2: seyjals 2, white Maianthemnin, 1 19 



Stigmas 5: sepals 5: petals 5: stamens lU GeraniaceaB, 3G 



