POLTPBTALiB. T 



• • Pistil only one, simple or compound. 



a. Shrubs, trees or woody climben. 

 fltyle And stigmA oae. 



Sepals, petals and stamens 6 each, opposite each other Berboridaceas, 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 CelastraceaB, 37 



A vine climbing by tendrils Vitaceee, 33 



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



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



Calyx 4-cleft: petals 4: stamens 6: ovary long-stiped Isomeris, 25 



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



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



Styles or stigmas more than one. 



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



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



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



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



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



b. Herbs: leaves mostly or all radicoL 



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



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



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



Sepals colored, united: styles 5. . Plumbagfinaceae, 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 SaxifragaceEB, 54 



Stamens 10, on the receptacle: stigma 6-lobed Ericaceee, 71 



Stamens 10, styles 5: leaves 3-foliolate Oxalis in Geraniacese, 36 



Stamens 6 united in S's: sepals 2: petals 4 in unequal pairs Fiunariacef© 19 



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



c. Herbs: leaves alternate. 



Corolla regular (petals alike) or nearly so. 



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



stamens 6, equal : ovary onastipe CapparidacesB, 25 



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



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



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



