210 
IOWA ACADEMY OF SCIENCES. 
CARYOPHYLLACE^. 
Agrostemma. 
246. A. githagolj. {Lychnis githa go Common 
in grain fields . 
SiLENE . 
247. S. stellata (L.) Art. Common in woods and 
thickets. 
248. S. antirrhina L. Common in waste sterile 
ground. 
Lychnis . 
249. L. alba Mill. (L. vespertina 'Sihih .) Becoming 
frequent along the streets of Iowa Falls. 
Saponaria. 
250. S. officinalis L. Common locally. 
Alsine . 
251. A. media L. {Stellaria media Smith). Recently 
became very abundant about Iowa Falls, often 
forming a turf in shady lawns . 
252. AAongifolia (Muhl.) Brit. {S . longifolia Muhl.) 
Swampy ground; frequent. 
Cerastium. 
253. C,vulgatum\j. Moist, mostly shady ground; 
abundant during the past few years. 
Mcehringia. 
254. M. lateriflora (L.) Feuzl. iArenaria lateriflora L.) 
Common in dry woods. 
Anychia. 
255 . A . canadensis (L . ) B . S . P . {A. capillacea DC . ) 
Dry woods; scarce. 
NYMPH^ACE^. 
Nymph^a. 
256. advena Soland. {Nuphar advena Ait. f.) 
Frequent in ponds . 
