222 PORTULACACEiE. 



Conspectus of the United States Genera. 



* Sepals 2. Petals usually 5. (True Portulacaceae.) 



Claytonia. (Plate 97.) Calyx persistent. Stamens 5, adherent to 

 the base of the hypogynous petals (which are not ephemeral) . Cap- 

 sule 3-valved, 3 - 6-seeded. 



Talinum. (Plate 98.) Calyx deciduous. Petals 5, hypogynous, ephe- 

 meral. Stamens 10 - 30. Capsule 3-valved, many-seeded. 



Portulaca. (Plate 99.) Calyx 2-cleft, the tube coherent with the ova- 

 ry. Petals 4-6, perigynous, ephemeral. Stamens 8 -20. Capsule 

 circumscissile at the middle, the upper portion deciduous with the 

 limb of the calyx, one-celled, many-seeded. 



* # Sepals 5. Corolla wanting. 



Sesuvium. (Plate 100.) Calyx 5-parted, free. Stamens 5 - 20 , insert- 

 ed in the throat of the calyx. Capsule circumscissile, 3-5-eelled, 

 many-seeded. Styles distinct. 



