POLYPETAI^E. 

 * Pigtil only one, simple or compound. 



a. Shrubs, trees or woody climbers. 

 Style and stigma oce. 



Sepals, petals and stamens 6 each, opposite each other ^. . . .BerberidaCGBB, 17 



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



Strongly aromatic or heavy-scented RutaceSB, 36 



Not aromatic: leaves simple, opposite Celastracero, 37 



A vine climbing by tendrils Vitaceae, 33 



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



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



Calyx 4-cleft: petals 4: stamens G: ovary long-stiped Isomeris, 25 



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



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



Styles or stigmas moro than one. 



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



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



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



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



Stigma 5-lobed: small shrub: leaves opposite or whorled Ericaces9, 71 



b. Herbs: leaves mostly or aU radical 



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



Stamens 5, anthers united: lower petal spurred: style 1 Violacese, 26 



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



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



Stamens, sepals and petals 5 each: styles 3 or 6: very glandular. .Droseraceae, 53 



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



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



Stamens 10, styles 5: leaves 3-foliolato Oxalis in GeraniaceaD, 36 



Stamens 6 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) Cruciferaa, 19 



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



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



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



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



