CARYOPHYLLE^ 55 



much larger flowers and very swollen stem-nodes, occur 

 also, the former in dry, the latter in moist pastures. 



20. Spergula, L. 



Petals 5; sepals 5 ; stamens 5-10; styles 5; capsule 

 opening by 5 entire valves ; leaves very narrow, with 

 small scabrous stipules. Small herbs ; not alpine. 



6". aruensisj L., Spurrey; very common in cultivated 

 land. 



21. Spergularia, L. 



Sepals 5; petals 5; stamens 2-10; styles 3; capsule 

 opening with 3 valves; leaves linear, with scarious sti- 

 pules. Prostrate herbs ; not alpine. 



S. rubra, Presl {Arenaria rubra, L.), with pink flowers 

 and flat leaves ; and 5. media, Pers. {marina, Leb.), with 

 pale pink flowers and fleshy leaves, both with decumbent 

 habit; sandy places. 5. segetalis, Fnzl., with white 

 flowers ; fields ; Switzerland, occasional. 



Order XIIL— PORTULACACEiE. 



Petals 4 or more ; sepals 2 ; stamens 3 or more ; style 

 simple or trifid. A small order, chiefly American ; not 

 alpine. 



I. MONTIA, L. 



Flowers minute, white; petals 5, united at the base; 

 stamens 3 ; seed-vessel a globose capsule with 1-3 tuber- 

 culated seeds. 



M. fontana, L. ; marshy places ; the form M. minor, 



