136 LESSONS IN BOTANY 
60. Stamens on the torus, in several sets. Leaves dotted. * St. Johneworts. 
60. Stamens on the calyx (perigynous, § 83)....61. 
61. Ovaries many, free, but inclosed. Calycanths. 
61. Ovary compound, free in the bell-shaped calyx. Loose-strifes. 
61. Ovary compound, adherent to the calyx....62. 
62. Leaves with a marginal vein. Myrtleblooms. 
62, Leaves with no marginal vein. * Saxifrages. 
63. Petals imbricate or vavate in the bud....65. 
68. Petas convolute in the bud... .64. 
64. Anthers 1-celled, turned inwards, * Maliows. 
64. Anthers 2-celled, turned outwards. South. Silk-cottons. 
65. Ovaries distinct, many or few....66. 
65. Ovary compound....67. 
66. Petals 6, valvate (§ 129). Erect shrubs. Papaws. 
66. Petals 3-9, imbricate. Trees or erect shrubs. * Magnoliads. 
66. Petals 6-9, imbricate. Climbing shrubs. Moonseeds. 
67. Leaves dotted with pellucid dots. Orungeworts. 
67. Leaves dotless. Sepals valvate. Fls. small. Zéndenblooms. 
67. Leaves dotless. Sepals imbricate, Fls. large. Teaworts. 
68. Style 1, with many stigmas. Green, fleshy shrubs, acti), Indian Figs. 
68. Styles several, or 1] with 1 stigma. Woody trees orshrubs. * Aoscworts. 
69. Pistils many, spicate on the slender torus. Climbers. Sehizunds, 
69. Pistils 2-6, capitate on the short torus. Climbers. Moonseeds, 
69. Pistil 1 only. Stamens opposite the petals. * Berberids. 
70, Flowers 4-parted, with 8 stamens. * Onugrads. 
70. Flowers 4-parted, with 4 stamens, * Cornels. 
70. Flowers 5-parted, with 5, 10, or many stamens....71. 
71. Ovary 5-carpeled, 5-styled. Araliads. 
71. Ovary 2-carpeled. Leaves palmate-veined. * Currants. 
71. Ovary 2-carpeled. Leaves pinnate-veined. * Savifrages. 
72, Leaves opposite. Stem climbing by tendrils. Vineworts. 
72, Leaves alternate. Erect, or vine without tendrils. Buckthorns. 
73. Carpels 3-5....74. 
73. Carpels 1 or 2....75. 
74, Styles short. Leaves simple.. Staff-trees, 
74, Styles long and slender. Leaves pinnate, serrate. * Soupworts. 
75, Styles 2, slender. Samara double. * Mupleworts. 
75. Style 1, short. (Drupe, or single samara.) * Order 
76, Filameuts 10, united into a tube. Leaves bi-pinnate. Pvide-of-Inidia. 
76. Filaments 5, distinet....77. 
77, Leaves pellucid-punctate. Rueworts. 
77. Leaves uot dotted. Ovary 8-carpeled, 1-seeded. Sumacs. 
77. Leaves not dotted. Ovary 8-carpeled, 8 seeded. * Soapworts. 
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