Oenothera ONAGRAC— HALORAGIDAC. Myriophyllum 



ground and salt marshes of the Coastal Plain, southward to Accomac 

 County. Mid-May to July. — f 'th'^ « 



O. tetragona Roth. { Kneiffia fruticosa Raimann, in part.) 



Frequent in woods and fields of the Piedmont area, and on the 

 Coastal Plain near the Fall Line. Mid-June, July. 



O. perennis L. {Kneiffia pumila (L.) Spach. 



Infrequent, in open ground, northern Cecil and New Castle 

 Counties; rare on the Coastal Plain: Selbyville (S), True, 221, 21 

 June 1926 (P); Assateague Island (Ac), True, 28 June 1928 (P). 

 Late May to mid-July. 



O. speciosa Nutt. {Hartmannia, Small.) 



Roadsides in Accomac village: R. R. Tatnall, 40, 1 June 1928 

 (T), and later collections (T, P, G). Late May, June. 



Gaura L. 

 G. biennis L. 



Infrequent, in or near the Piedmont area. Formerly collected 

 on shores of Delaware River and Christiana Creek, New Castle 

 County, but now known only from woods and hedgerows in Cecil 

 County. Aug. to mid-Sept. 



Circaea L. 



C. quadrisulcata (Maxim.) F. & S. var. canadensis (L.) Hara. 

 (C. lutetiana of authors; C. latifolia Hill. See Rhodora 

 41, 386-387. 1939.) Enchanter's Nightshade. 

 Common in woods of the Piedmont; less frequent southward at 

 least to Talbot County (Earle). 



HALORAGIDACEAE (Water Milfoil Family) 



Myriophyllum L. Water Milfoil. 



M. verticillatum L. var. pectinatum Wallr. 



Rare, in water: Delaware City (NC), Commons & Tatnall, 22 

 Sept. 1896 (A); Humphrey Pond, Salisbury (Wi), Shreve & Jones, 

 1208, 18 Aug. 1906 (U). 



M. heterophyllum Mx. 



Rare, in ponds and slow streams: Morris Pond, n. of Millsboro 



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