136 



LESSONS IN BOTANY 



60. Stameus on the torus, in several sets. Leaves dotted. 

 GO. Stamens on the calyx (perigynous, § 83) .... 61. 



61. Ovaries many, free, but inclosed. 



61. Ovary compound, free in the bell-shaped calyx. 



61. Ovary compound, adharent to the calyx. . . .62. ■ 

 62. Leaves with a marginal vein. 

 62. Leaves with no marginal vein. 



63. Petals imbricate or vaivate in the bud 65. 



63. Petais convolute in the bud 64. 



64. Anthers 1-celIed, turned inwards. 



64. Anthers 2-celled, turned outwards. 



* St. Johmworts. 18 



South. 

 ..66. 



* Calycanths. 

 * Loose-strifes. 



Myrtleblooms. 



* Saxifrages. 



* Mallows. 

 SilTc-cottons. 



Erect shrubs. 



65. Ovaries distinct, many or few, 



65. Ovary compound 67. 



66. Petals 6, vaivate (§ 129). 



66. Petals 8-9, imbricate. Trees or erect shrubs. 



66. Petals 6-9, imbricate. Climbing shrubs. 



67. Leaves dotted with pellucid dots. 



67. Leaves dotless. Sepals vaivate. Fls. ^xi\dX\.*Lindcnhlooms. 



67. Leaves dotless. Sepals imbricate. Fls. large. *7tai<;o/-^s. 



Style 1, with many stigmas. Green, fleshy shrubs Cacti), * Indian Figs. 



Styles several, or 1 with 1 stigma. Woody trees or shrubs. * Moscivorts. 



69. Pistils many, spicate on the slender torus. Climbers. Sddzanths. 



*Papaws. 



* Magnoliads. 



Moonseeds. 



Orangeworts. 



Moonseeds. 



* Berherids. 



* Onagrads. 

 * Cornels. 



*AraUad.s. 



* Currants. 



* Saxifrages. 



* Vineworts. 



69. Pistils 2-6, capitate on the short torus. Climbers. 



69. Pistil 1 only. Stamens opposite the petals. 

 70. Flowers 4-parted, with 8 stamens. 

 70. Flowers 4-parted, with 4 stamens. 

 70. Flowers 5-parted, with 5, 10, or many stamens 71. 



71. Ovary 5-carpeled, 5-styled. 



71. Ovary 2-carpeled. Leaves palmate-veined. 



71. Ovary 2-carpeled. Leaves pinnate-veined. 



72. Leaves opposite. Stem climbing by tendrils. 

 72. Leaves alternate. Erect, or vine without tQndir\\s.*£uckthorns. 

 78. Carpels 8-5.... 74. 

 73. Carpels 1 or 2 75. 



74. Styles short. Leaves simple. * Staff-trees. 



74. Styles long and slender. Leaves pinnate, serrate. * Soapworts. 



75. Styles 2, slender. Samara double. * Ma'pleworts. 



75. Style 1, short. (Drupe, or single samara.) * Order 



76. Filaments 10, united into a tube. Leaves bi-pinnate. Pride-of- India. 



76. Filaments 5, distinct 77. 



77. Leaves pellucid-punctate. Bueworts. 



77. Leaves not dotted. Ovary 3-carpeled, 1-seeded. * Sumacs. 



77. Leaves not dotted. Ovary 3-carpeled, 3 seeded. * Soapworts. 



4 



2 



5 



28 



26 



27 



58 



47 



4 



5 



6 



52 



65 



64 

 55 

 57 

 44 

 43 



