ORDER XXII. PORT! LACACE^. 249 



tered panicles, frequently double ; crown of the petals linear. — "White, 

 tinged with red. If. Through the summer. Introduced. 12 — 20 

 inches. 



Genus IX.— DIAN'THUS. L. 10—2. 



(From the Greek dios, divine, and antlios, a flower.) 



Calyx tubular, 5-toothed, with scales at the base. Petals 5, 

 with long claws. Stamens 10. Styles 2. Capsule 1-celled. 



1. D. Carolinia'na, (Walt.) Flowers aggregated, on long peduncles, 

 pink. Scales of the calyx half as long as the tube. 



Order XXII.— PORTULACA'CE^E. Juss. 



Sepals 2, seldom 3 — 5, cohering at the base. Petals gener- 

 ally 5 ; aestivation imbricate. Stamens 5 — 20, and opposite the 

 petals, inserted with them into the base of the sepals. Anthers 

 versatile. Styles 3-cleft, stigmatose within. Capsule 1 — 4-celied, 

 with a transverse dehiscence. Placenta central. Seeds nu- 

 merous, campylotropous. Embryo curved. Succulent plants. 

 Leaves without stipules. 



Genus I.— PORTULAC'A. L. 12—1. 

 (From potto, to carry, and lac, milk.) 



Calyx cohering to the ovary, 2-parted. Petals 4 — 6, in- 

 serted on the calyx, equal. Stamens 8 — 20. Styles 3 — 6- 

 cleft at the apex, or parted. Capsule 4-celled, many-seeded. 



1. P. olera'cea, (L.) Stem fleshy, spreading on the ground. Leaves 

 cuneiform, obtuse, fleshy. Flowers sessile, in clusters, axillary and 

 terminal, small. — Yellow. 0. Introduced. Purslane. 



Genus II.— TALI'NUM. Adans. 12—1. 

 (Supposed to be derived from thalia, a green branch, in allusion to its verdure.) 



Sepals 2. Petals 5, distinct or somewhat united at the base. 

 Stamens 10 — 20. Style filiform, cleft at the apex. Capsule 

 1-celled, 3-valved, many-seeded. 



1. T. teretifo'lium, (Pursh.) Stem 1 — 4 inches long. Leaves terete, 

 subulate, fleshy. Flowers in cymes. Peduncles elongated, 3 — 8 inches, 

 naked.— Purple. %. N. C. 



Genus III.— CLAYTO'NIA. L. 6—1. 

 (In honor of John Clayton.) 



Calyx 2-sepaled. Petals 5, hypogynous, obcordate, emar 

 ginate, bifid, sometimes entire, unguiculate, the claws more or 

 less connate. Stamens 5, inserted into the claws of the petals. 

 Style 3-cleft. Capsule 3-valved, few-seeded. Seeds smooth 

 and shining. Herbs with simple stems. 



11* 



