OUR AMPHIBIOUS PERSICARIAS 241 
I found only two plants No. 961 blooming as early as July 9, 
1911. They were growing high up on a dry sand pile or dune, 
about one hundred yards from any water, and twenty feet or 
more above the highest water line. Such a habitat I have found 
so unusual that it may be considered as teratological as the plants 
so found usually become very hirsute develop broad herbaceous 
ochrea borders, and large leaves. The plants became very leafy, 
and of the aspect of P. asclepiadea except for pubescence and remain 
sterile and very green, often with purple blotched leaves. 
The following are the principal specimens of P. ammophila 
of the herbaria I have examined. No. 35 collected by myself 
4 miles north of Notre Dame blooming on sand thrown up from 
the bottom of a ditch in the middle of a swamp at Webster’s cross- 
ing. Dated VII. 8, 1909. The other specimens collected by me 
are all sterile and, but for their hirsute pubescence usually of the 
aspect of P. asclepiadea. 
gti, Oliver’s, south of South Bend, Ind., on tracks of Grand 
oankeiwkowN 27 1Ort.,.620), North Liberty-Ind:, Vir, 19m: 
2732, Lawton, Mich., Edge of a pond near Bankson Lake. 3692, 
Webster’s Crossing, 3 miles north of Notre Dame, X. 8, 1909. 
909, Dollar Lake near Kizer, Ind., on Wabash Branch R. R., 
VI. 26, 1911. This specimen has subsessile leaves about 20 cm. long 
and the largest ochrea borders I have met in any specimen, over 
- 2 cm. wide, erose ciliate. It grows among grasses and sedges 
around the pond. 
Sq7a.ob, Millers, nid.;* Villy 1, cFOTL.... 919, On 92.9.5, Ro R. 
near Galien, Mich. (in Indiana). VI. 15, 1911; also 920 gathered 
at another place in the same railroad, and No. 918, collected nearby. 
912, Chain Lake, VI. 21, 1911, and at another place about one half 
mile distant, No. 886; also 913. 2077, Chain Lake, IX. 26, 1911. 
Leaves broad elliptic 15.5 cm. by 4.5. 862, 2 miles S. of Stephens- 
ville, Mich., VI. 8, 1911. 39, Webster’s Crossing, VII. 7, 1908. 
88, Cultivated field southeast of Notre Dame. VI. 19, 1909. 
U. S. National Herbarium. 407260, B. W. Everman’s (1293) 
Lake Maxinkuckee, Ind., VIII, 15, 1899. 648937, Frank Gates’, 
Chicago, VI. 31, 1905. 383069, L. M. Umbach’s, Galt, Ont., VIII. 
17, 1889. 607246, C. Dennis’ (1209) Bass Lake, Steuben Co., 
Ind. 45460, B. C. Taylor, Center City, Minn., VIII., 1892. (Dupli- 
cate in Herb. N. Y. Bot. Garden.) 607246, Chas. C. Deam, (7209)’ 
