368 
California : Calistoga (Greene), Shasta Co., Redding (Greene). 
66. POLYGONUM BIDWELLI4, S. Watson, Proc. Am. Acad. 
xiv. 294 (1879). 
California: near Chico (Mrs. Bidwell). 
67. POLYGONUM PARRYI, Greene, Bull. Torr. Club, viii. 99 _ 
(1881). 
Oregon: Waldo (Howell), Grant’s Pass (Howell, 254); Cali- 
fornia: Yosemite Valley (Parry); Washington: Falcon Valley 
(Suksdorf, 609). 
SECTION VII. TINIARIA. 
68. POLYGONUM CONVOLVULUS, L. Sp. Pl. 364 (1753). 
Vermont: Charlotte (Pringle); Maine: Mt. Desert Island 
(White); New York: Alder Lake, (Rusby); Pennsylvania: 
Bucks County (Ruth) ; Virginia: Natural Bridge (Britton), White 
Rock mountain and Cumberland Gap (Small); Florida (Chap- 
man); West Virginia: Banks of the Ohio (Millspaugh); Ne- 
braska : Fort Niobrara (Wilcox), Kimball County (Rydberg, 359); 
Utah: Utah Valley, 5,000 feet (Watson, 1070). 
69. POLYGONUM DUMETORUM, L. Sp. Pl. Ed. 2, 522 (1762). 
There are specimens of this species identical with the Euro- 
pean plant, in the Harvard and Columbia College Herbaria, col- 
lected by Englemann on the prairies of Illinois and about St. 
Louis, Missouri. Whether the plant is introduced from Europe 
or native, it is impossible to tell at the present time. 
70. POLYGONUM SCANDENS, L. Sp. Pl. 364 (1753). 
P. dumetorum, L. var. scandens, A, Gray, Man. Ed. 5, 4! 
(1867). 
Massachusetts: Ipswich (Morong); New York: Erwin (Hart 
Wright), New York City (Torrey), Staten Island (Britton) ; Penn- 
sylvania : Bethlehem (Moser), Harrisburg (Small) ; Florida (Chap- 
man); West Virginia: Monongalia County (Millspaugh) ; Louis- 
iana: New Orleans (Ingalls); Indian Territory, on the False 
Washita (Palmer, 289); Texas, on the Liana (Lindheimer, 685) ; 
Nebraska: Lincoln (Webber), Deuel County (Rydberg, 351). 
Although this species closely resembles P. dumetorum 
in aspect, it has characters which are constant and sufficient to 
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