POETULACACE^. (pURSLANE FAMILY.) 29 



filiform, 3 to 12 lines long; flowers on long slender pedicels; sepals 3-nerved; petals obovate, 

 2 lines long or more; longer than the sepals. 



2. A. Californica, Brew. Leaves lanceolate, 1 or 2 lines long; flowers smaller than 

 the last; petals spatulate. 



3. A. palustris, Wat. Stems weak, 4 to 8 inches high; leaves linear, flaccid, 6 to 

 12 lines long; flowers few on long pedicels; petals 3 or 4 lines long. In swamps. 



5. SPERGULA, L. Corn-Spurrt. 



Sepals 5. Petals 5, entire. Stamens 10, rarely 5. Ovary 1-celled, many-ovuled; 

 styles 5, alternate with the sepals. Annuals dichotomously branched, with awl-shaped 

 apparently whorled leaves (fascicled). 



1. S. arvensis, L. The almost filiform leaves 1 or 2 inches long; flowers white, the 

 long pedicels at length reflexed. Naturalized. 



6. LEPIGONTJM, Fries. Sand-Spurrt. 



Sepals 5. Petals 5, entire, rarely fewer. Stamens 10, or fewer by abortion. Ovary 

 1-celled, many ovuled; styles 3, or rarely 5. Low herbs, with setaceous or linear fascicled 

 leaves; flowers white or pink, pediceled. 



1. L. macrothecum, Fisch. & Mey. Rather stout, often a foot high; leaves fleshy 

 i to 2 inches long, with large ovate stipules; pedicels becoming reflexed; sepals 3 or 

 more lines long, equaling the pinkish petals. In salt-marshes. 



2. L. medium, Fries. More slender than the last, with smaller flowers on shorter 

 pedicels. ♦ 



Order 11. PORTULACACEiE. 



Succulent herbs, with simple and entire leaves, and regular but unsymmetrical perfect 

 flowers; the sepals only 2, the petals 2 to 5 or more; the stamens opposite the petals 

 when of the same number; the ovary 1-celled. Stamens sometimes indefinitely numerous, 

 commonly adhering to the base of the petals, these sometimes united at the base. Style 

 2 to 8-cleft. Stipules none. 



* Sepals 2, dUtinct, persistent. 



Btamens more than 5 '. Calandrinia. 1 



Stamens 5 Claytonia. 2 



Sepals 4 to 8 Lewisia. 3 



ft • 



1. CALANDRINIA, II B K. 



Petals mostly 5 (3 to 10). Stamens 5 to 15. Ovary free, many-ovulcd; style 3-clcft, 

 short. Capsule globose or ovoid, 3-valved. Seeds shining-black. Low succulent herbs 

 with alternate leaves. 



