349 
In sandy soil, especially on the sandhills within the region of 
the Great Plains, it becomes low, upright, with thick leaves, and 
exceedingly villous, with grayish hairs. This formsomewhat resem- 
bles the next variety, but is lower and generally has yellow 
anthers. A few of the specimens are: 
Nebraska: P. A. Rydberg, no. 1287 and no. 1808, 1895 ; C. E. 
Bessey, 1887; H. Webber, 1889; Smith & Pound, no. 50, 1892. 
Colorado: Parry. 
Missouri: B. F. Bush, no. 9, 1892. 
Jona: Paay TETE 
Manitoba : Bourgeau, no. 1, 185 7-8. 
Physalis heterophylla ambigua (Gray). 
P. Virginica ambigua Gray, Proc. Am. Acad. 10: 65. 1874. 
P. Virginiana ambigua Gray, Syn. Fl. 2: part 1, 235. 
P. ambigua Britton, Mem. Torr. Bot. Club, 5: 287. 1895. 
? P. obscura Torr. Fl. N. & M. U.S. 233. 1824 Comp. 110. 
? P. nyctaginea. Dunal in DC. Prod 13: part 1, 440. 1852.* 
Tall and generally upright, very long-villous, scarcely at all 
viscid; flowers generally larger, anthers generally purplish, leaves 
usually dark green and of a firm texture, more or less acuminate 
at the apex, often subentire, and pubescent mainly on the veins 
of the lower surface; but in the type specimens and those cited 
with an asterisk, the leaves are thinner, of a lighter color, and 
sinuately toothed. 
The position of this variety is very uncertain. 
good species, but it may also be simply a form of P. heterophylla, 
which itself is made up of many different forms. The variety 
ambigua seems to belong principally to the eastern and central 
States. 
The following specimens have been examined: 
ermont: *A, J. Grout, 94. 
Rhode Island: W.W. Bailey, 1880. 
New York: Schweinitz (labelled P. obscura). 
Ohio: A. E. Ricksecker, 1894; C. Wilkinson, 7826, 1892; 
H. C. Cowles, 1891. x 
*The author has labelled several herbarium spec 
nyctaginea (Dunal) n. v., as it probably is P. obscur: Torr., on which Dunal : 
P, nyctaginea, but it is better to adopt a newer but certain name instead of an older 
It may be a 
imens P. heterophylla 
but very uncertain one. 
