244 LETTER L. 



55. Leaves regularly opposite . . 56 

 Leaves alternate, or only occasionally opposite 5J 



56. Stem articulated; i. e. separating into distinct 



pieces at the joints The Bean-caper Tr. 



Stem continuous The Bladder Nut Tr, 



57. Calyx in a complete whorl . . . 58 

 Calyx in a broken whorl . The Soap-tree Tr, 

 Calyx of only two sepals . The Purslane Tr. 



58. Fruit beaked . . The Geranium Tr, 

 Fruit not beaked . The Wood Sorrel Tr. 



59. Stamens perig\Tious . The Buckthorn Tr. 

 Stamens hypogynous . . The Vine Tr. 



60. Carpels more or less distinct, or solitary 61 

 Carpels consolidated . . .68 



6\. Anthers with recurved valves . The Barberry Tr. 

 Anthers with longitudinal valves . . 62 



62. Fruit a legume . . The Pea Tr. 



Fruit not a legume . . . 63 



6S. Carpels with hypogjTious scales . . 64 



Carpels without hypogynous scales . 65 



64. One hvpog. scale to each carpel The Houseleek Tr. 

 Two hypog. scales to each carpel The Francoa Tr. 



65. Cal. & cor. undistinguishable The Carolina A lisp. Tr. 

 Calyx and corolla quite different . . 66 



66. Herbaceous plants . The Crowfoot Tr. 

 Trees or shrubs ... 67 



67. Cal. and cor. divided into threes The Anona Tr. 

 Cal. and cor. divided into fours The Coriaria Tr. 



