164 



which was a pretty good guess under the circumstances. Elliott 

 says of its habitat and time of flowering : " Grows in close soils. 

 Very common. Less of an aquatic plant than any other species. 

 Flowers May-September." 



These two plants seem to show no tendency to intergrade, 

 and when in flower can be distinguished without a moment's hesi- 

 tation. The accompanying figures (drawn from memory of living 



I. Luthvii^ia virgata. 2. Ludwigia viaritivia. a. I'lower-bud just before an- 

 thesis. b. Flower just after anthesis. All twice natural size. 



plants and checked up by comparison with dried specimens) show 

 the principal diagnostic characters. 



Both species have a marked tendency, more so than most pine- 

 barren plants (in Georgia at least), to become weeds, particularly 

 along railroad embankments and ditches. 



L. inaritima I have not seen more than 50 miles from the coast 

 (except once in the vicinity of Valdosta), while L. virgata extends 

 inland in Georgia to Sumter County, if not farther. And if the 

 specimens cited fairly represent the ranges of these plants, L. vir- 

 gata ranges farther east, and L. inaritivia farther west, with their 

 ranges overlapping in Georgia and Florida. 



Col.l.KGE I'OINT, Ni:\V VoKK. 



