KEY TO THE FAMILIES OF CLASS I. 



107 



3. Stamens borne on the calyx, or where (he calyx (when coherent) separatesfrom the ovary. 

 Petals many, in several rows. 



Cakolina-Allspice F. 

 Cactus F. 

 Wateu-Lilt F. 



162 

 153 

 120 



Shrubs with opposite simple leaves and dingy-purple flowers, 

 i Leafless fleshy plants, of singular shapes, 



Water-plants, with the large flowers and leaves floating on the surface. 

 Petals 4 or 5, rarely 6. 



Leaves with stipules, alternate. 



Leaves without stipules. Pods many-seeded. 



Style and stigma one. Pod surrounded by the free calyx, 

 Styles or stigmas 3 to 8. Calyx coherent below with the ovary. 



Shrubs: leaves opposite. Pod with several cells. Philadelphns in Saxifrage F. 157 

 Herbs ; leaves fleshy . Pod one-celled, opening by a lid. Purslane F. 130 



EoseF. 146 



Lythrum F. 152 



B. StAMESS 10 OK FEWER. 



!• Corolla irregular. (Pistil one.) 



Leaves opposite, palmately compound. Calyx 5-toothed. Shrubs or trees, Hobsechestnut F. 139 



Leaves alternate, with stipules. 



Filaments often united, but not the anthers. Two lower petals approaching or joined. 



Pod simple, with only one row of seeds. Pulse F. 141 



Filaments short: anthers 5, united. Lower petal with a sac or spur at the base. Pod 



with 3 rows of seeds on the walls, Violet F. 126 



Leaves alternate, without stipules. Flower generally 1-spurred or 2-spurred. 



Stamens 5, short ; their anthers a little united. Pod bursting at the touch. Balsam F. 136 



Stamens 8, separate. Fruit of 3 thick and closed pieces, Indias-Cress F. 136 



Stamens 6, in two sets. Flower closed. Pod one-celled, Fujiitory F. 123 



H, Corolla regular, or nearly so. 



Stamens just as many as the petals, and standing one before each of them. 

 Pistils more than one, and separate. Petals 6. Flowers dioecious. 

 Pistil with one ovary but with five separate styles. 

 Pistil and style one (the latter sometimes cleft at the summit). 

 Anthers opening by uplifted valves or doors. Petals 6 or 8, 

 Anthers not opening by valves, but lengthwise. 



Woody vines. Calyx minute: petals falling very early. 

 Shrubs. Calyx larger, its divisions 4 or 5, 

 Herbs. Ovary and pod one-celled. 

 Sepals 2 : petals 5 : stigmas 3, 



Sepals as many as the petals : style single : stigma one, 

 Stamens as many as the petals and alternate with them, or twice as many, or of 

 Calvx with its tube adherent to the surface of the ovary. 



Stamens 3, united with each other more or less. Flowers monoecious, 

 Stamens distinct, as many or twice as many as the petals. 



8 



Moonseed F. 118 

 Lkadwokt F. 173 



Barberry F. 119 



Grape- Vine F. 137 

 Buckthorn F. 138 



Purslane F. 130 



Primrose F. 173 



some unequal number. 



Gourd F. 154 



