IOWA ACADEMY OF SCIENCE 
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SAPONARIA L. 
377. S aponaria officinalis L. Bouncing Bet. Occasional as an escape. 
378. Saponaria vaccaria L. Cow Herb. Not common but occasionally 
in fields and along railways. 
PORTULACACEAE. 
CLAYTONIA (Gron) L. 
379. Claytonia virginica L. Spring Beauty. Common in moist wood- 
lands. 
380. Claytonia mdlticaulis A. Nels. Yar. robusta Somes. Robust Spring 
Beauty. Locally not rare in woods. 
PORTULACA (Tourn) L. 
381. Portulaca oleracea L. Purslane or Pursley. A common weed in 
fields and waste places. 
382. Portulaca retusa Engelm. Notched Purslane. Rare; taken once 
in Fremont Twp. along Iowa River. 
NYMPHACEAE. 
NYMPH AE A (Tourn) L. 
383. Nymphaea advena Ait. Cow Lily. Common in ponds and marshes. 
CASTALIA Salisb. 
384. Cast alia tuber osa (Paine) Greene. Pond Lily. Not uncommon 
in ponds. 
RANUNCULACEAE. 
RANUNCULUS (Tourn) L. 
385. Ranunculus circinatus Sibth. Stiff White Water Crowfoot. 
Rare ; Oxford. 
386. Ranunculus cymbalaria Pursh. Seaside Crowfoot. Abundant on 
muddy shores. 
387. Ranunculus delphinifolius Torr. Yellow Water Crowfoot. Not 
uncommon in ponds and marshes. 
