PORTULACACE^ 43 



6. ARENARIA. Sandwort. 



Sepals 5; petals 5, not notched at the apex; stamen 10; styles 3; 

 pod short. Low tufted herbs with white flowers. 



1. A. lateriflfira, L. 



Stem not much branched, very slightly pubescent ; leaves oval to oblong; 

 peduncles usually 2-flowered. Moist places, prairies, common, Man.-Alta. 



2. A. verna, L. ; var. propinqua, Fernald. 



Stems numerous, slender, 1-5 in. high, tufted or matted; leaves awl- 

 shaped; flowers 2-5 on a, stem; sepals longer than the somewhat obscure 

 petals. Rocky Mts. 



7. SAGINA. Pearlwort. 



Sepals 4 or 5; petals 4 or 5, united, Or none; stamens mostly as 

 many as the sepals; pod many-seeded. Small matted herbs with 

 thread-like leaves without stipules, and small terminal flowers. 



1. S. deciimbens, (Ell.) T. and G. 



Annual; stem ascending, smooth, 2 or 5 in. high; leaves nari-owly linear; 

 peduncles thread-like, rising above the leaves; flowers 5-p.T,i'ted. Rocky Mts. 

 On the open prairie 30 miles east of Hand Hills. (Macoun.) 



8. SAPONARIA. Soapwort. 



Calyx 5-parted; petals 5; stamens 10; styles 2; pod mostly 

 1-oelled or with some, incomplete divisions. Weedy annuals. 



1. S. VaccSria, L. Cow-cockle. 



Glabrous; leaves lanceolate ; flowers red, the calyx with five sharp angles. 

 (.Vaccilria vulgaris, Host.) Local, Man. and Sask. 



XXVIII. PORTULACACE.^ (Pueslane Family). 



Succulent and usually spreading herbs with regular but unsym- 

 metrieal flowers. Sepals 2; petals "5 or none, opening in the sun; 

 stamens 5-20; styles 2-8, often united below; pod 1-celled. 



1. PORTULAcA. Purslane. 



Calyx 2-parted with the tube adhering to the ovary; petals 5, 

 inserted on the calyx; stamens 7-20; style 3-8-parted; pod 1-oelled, 

 many-seeded, opening by the removal of the upper part like a lid. 



