ANALYTICAL KEY. IxXl 



Calyx 6-toothed. Stamens 6. Capsule 2-celled PEPLIS p. (156). 

 Calyx 5-lobed. Stamens 6. Capsule 1-celled, several- 



11 6-! seeded GLAUX (p. 292). 



Calyx of 4 or K sepals. Stamens 4 or 6. Capsule 1-celled 



several seeded .... CAHYOPHYLLACE.S: (p. 58) 

 Flowers glumaceous, consisting of chaffy scales alternating 

 with each other, enclosing the stamens. Leaves linear. 



Stamens 2 or 3 165 



Perianth entire, oblique, projecting on one side into a lip. Sta- 

 mens 6 ...... ABISTOLOCHIACEJ3 (p. 389). 



.Perianth 4-, 5-, or 6-merous. Stamens 4, 6, or 6 . , . .118 



1]8 f Two or more ovaries ROSACES (p. 127). 



\Asingleovary 119 



i it,/ Perianth of 4 or 5 parts or teeth. Stamens usually 4 or 6 .120 



' '\Perianthof6divisions. Stamens 6 124 



120 /Ovary inferior THESIUM (p. 389). 



117-1 



^Ovary superior 121 



Seeds several in the capsule . . . PLANTAGO (p. 866). 



Seeds solitary 122 



Stipules leafy. Leaves broadly lobed or divided ROSACES (p. 1 27). 

 Stipules membranous, sheathing the stem POLYGONACE. (p. 379). 



Stipules minute or none 123 



Stamens 4 PARIETARIA (p. 400). 



Stamens 5 CIIEXOPOUIACKA: (p. 370). 



Stem leafy. Stipules sheathing. Nut enclosed in three of 



the perianth-lobes RUMEX (p. 379). 



Leaves linear, mostly radical. Capsule with 3 or more seeds 161 

 Stamens and pistils in distinct globular or cylindrical masses 



without separate perianths . . . . . . .166 



Stamens about 12, with one pistil in a calyx-like involucre. 



EUPHOHBIA (p. 891). 



Flowers, male or female, each with a distinct perianth . .126 



Stems long and climbing 127 



Stems parasitical on trees with hard green forked branches. 



VlSCUM (p. 204). 



Stems terrestrial or aquatic, but neither climbing nor floating 130 

 Leaves opposite. Capsules in a head concealed by leafy bracts 



HUMULU8 (p. 400). 



Leaves alternate. Berries red 128 



Leaves angular or lobed. Stem climbing by tendrils. Perianth 



6-lobed BBYONIA (p. 167).; 



Leaves entire, shining. Stem twining, without tendrils. 



Perianth 6-lobed TAMUS (p. 455). 



. ( Male and female flowers on the same plant . . . .131 

 /l) \Male and female flowers on different plants . . . .139 



(Flowers glumaceous, consisting of chaffy scales enclosing 

 the stamens 166 

 Flowers of both sorts, or at least the males, with a distinct 

 perianth of 3, 4, or more divisions 129 



,,/ Male perianth of 3 to 5 divisions 182 



\ Male perianth of 6 divisions 138 



.-/ Stamens as many as the divisions of the perianth . . .133 

 I Stamens indefinite 137 



121 

 122 

 123 



124 



125 



126 

 127 



128 



