POLYPETALOUS EXOGENOUS PLANTS. 171 



petals mostly emarginate, but sometimes acute. Damp 

 rich soil. March. Plant 4-10' long. 



C. Caroliniana, Michx. Leaves 1-2' long, ovate- 

 lanceolate or oblong, tapering at i\\Q\)2i^Q'y petals obtuse. 

 Mountains. March, April. 



TALINUM. 



Sepals 2, free, deciduous. Petals 5, hypogynous. Sta- 

 mens 10-20. Style 3-lobed. Capsule 3-celled at the base, 

 3-valved, many-seeded. Smooth and fleshy herbs, with 

 alternate leaves and cymose flowers. 



T. TERETiFOLiUM, Pursh. Stem thick, leafy; leaves 

 linear-cylindrical ; cymes on long peduncles ; petals purple, 

 fugacious. Stems 2-4' long, perennial. 



PORTULACA, Tonrn. Purslane. 



Sepals 2, united and cohering with the ovary below, the 

 upper portion circumscissile and deciduous with the upper 

 part of the capsule. Petals 4-6, inserted Avith the 8-20 

 stamens. Styles 3-8 parted. Capsule globose, 1-celled, 

 and many-seeded. Low, fleshy herbs, with terete or flat, 

 mostly alternate leaves, and fugacious yellow or purple 

 flowers. 



P. OLERACEA, L. Lcaves flat, cuneate, naked in the 

 axils; flowers yellow; stamens 10-12. Stem prostrate. 

 Cultivated grounds. 



bi' 



22. PINK FAMILY. Order, Caryophyllace^. 



Herhs with swollen joints, opposite entire leaves and 

 regular flowers. Sepals 4 or 5, persistent. Stamens never 

 more than twice as many as the petals or sepals and often 

 fewer. Petals 4 or 5, unguicnlate or not, bifid or entir^^, 

 mostly removed from the calyx by a short internode of the 

 receptacle, sometimes wanting. Style 2 to 5, stigmat- 



