120 



mens examined did it approach the estuarine material in size. 

 The ripe fruit (3.0X2.0 mm.) is the same size as in typical P. 

 sagittatum. Fassett has noted (I.e.) that the green-flowered form 

 is found elsewhere than on estuaries. I have found it rather 

 common in the late fall on Long Island where it has flowers of 

 normal size. 



Penthorum sedoides L. f. leucosperma, n. var., a forma 

 typica recedit seminibus albis. The seeds of P. sedoides are 

 ordinarily deep brown, but in the sprawling plants (no. 6434, 

 type in herb. Brooklyn Botanic Garden), obtained between high 

 and low tide levels at Stony Brook, the seeds are white or cream 

 colored, only the axis to which they are attached showing any 

 orange-brown coloration. These specimens have a greatly re- 

 duced green inflorescence which does not show the brownish 

 color of pistils and filaments ordinarily seen in the typical 

 plants. 



Ludvigia palustris (L.) Elliott var. inundata n. var. — 

 Caulo plerumque simplice elongato crassoque fructigero, foliis 

 viridibus, seminis 0.7-0.8 mm. longis, albis vel leviter stra- 

 mineis. Differt a planta typica caulibus elongatis viridibus et 

 seminibus majoribus albidis. 



Differs from typical L. palustris in the rather thick simple 

 elongated stems, wholly green color, and larger whitish seeds. 

 Submerged on shores of tidal streams, New York to Maryland. 

 New York: tidal mud of Rocky Creek, Red Hook, Dutchess 

 County, M. E. Elwert and H. K. Svenson no. 6446 (type in herb. 

 Brooklyn Botanic Garden) ; tidal shores of Hudson River, Coey- 

 mans, Albany County, Svenson no. 5496 (seeds 0.7 mm. long). 

 New Jersey: Taylor, Burlington County, H. B. Meredith 

 (seeds whitish to straw-colored, 0.76 mm. long); Camden, 

 C. H. Brice (seeds straw-colored, 0.8 mm. long) ; shores of 

 Delaware River, Burlington County, Bayard Long (seeds white, 

 0.75 mm. long). Pennsylvania: shores of Delaware River, De- 

 lair County, Bayard Long (seeds white, 0.76 mm. long). Mary- 

 land: tidal shores, Elkton, Svenson no. 3479 (seeds 0.77 mm. 

 long). 



The Ludvigia collected on the tidal shores at Rocky Creek 

 had an appearance strikingly different from the reddish sprawl- 

 ing plant commonly seen in ditches and on pond shores, the 

 plants being entirely green with leaves confined for the most 



