(i77) 



3906. Sour blue huckleberry. — The fruit of V. ovalifolium J. E. Smith. Native 

 of northwestern North America. Collected by H. H. Rusby at Sielitz, 

 Oregon, July, 1909. 



3907. Low blueberry. Blue huckleberry. — The fruit of V. vacillans Kalm. Native 

 of northeastern North America. Collected by Clute & Wilson at Linden- 

 hurst, New York, August 10, 1899. 



3907.1. The same in flower. Collected by H. H. Rusby at Little Falls, New 

 Jersey, May 19, 1920. 



3908. Another sample of the same, varying in the minutely denticulate leaf margin. 



Collected by H. H. Rusby at Marlboro, New Hampshire, July 13, 1919. 



3909. Evergreen huckleberry. — The fruit of V. ovatum Pursh. Native of the 

 Pacific coast region of North America. Collected by H. H. Rusby on 

 Mount Tamalpais, California, July, 1909. 



3910. Sour red huckleberry. — The fruit of V. parvifolium J. E. Smith. Native of 

 northwestern North America. Collected by H. H. Rusby at Sielitz, Oregon, 

 July, 1909. 



391 1. Low sweet blueberry. — The fruit of V. pennsyhanicum Lam. Native of 



the northeastern United States. Collected by H. H. Rusby at Oscoda, 

 Michigan, August 20, 1906. 



3912. Another sample of the same. Collected by H. H. Rusby at Marlboro, 



New Hampshire, July 20, 1919. 



3913. A form of the same species, with hairy lower leaf-surfaces. Same data as the 



preceding. 



3914. Black low sweet blueberry. — The fruit of V. pennsyhanicum nigrum. Native 

 of northeastern North America. Same data as for 3912. 



3915. Another sample of the same, collected at the same place, on September 20,. 



1919. 



3916. Narrow-leaved low sweet blueberry. — The fruit of V. pennsyhanicum. 



angustifolium. Probabiy a distinct species. Native of northeastern North. 

 America. Same data as for 3912. 



3917. Tall black blueberry. — The fruit of V. atrococcum (A. Gray) Heller. Native 

 of northeastern North America. Form with the leaf-margin bristly-serrate. 

 Collected at Marlboro, New Hampshire, July 13, 1919, by H. H. Rusby. 



3918. Another form of the preceding with the leaf-margin entire but hairy. Same 

 locality and date. 



3919. Another form of the same, having the leaves hairy beneath and smooth and 



shining above. Same locality and date. 



3920. Another form of the same, having the leaves densely hairy beneath. Same 

 locality. Collected September 20, 1919. 



3921. Another form, having the entire-margined leaves hairy on both surfaces. 



Same locality. Collected July 13, 1919. 



3922. Another form, having the leaves green on both sides, paler beneath, the 

 margins denticulate, but not ciliate. Same locality and date. 



3923. Canada blueberry. Sour-top or velvet-leaf blueberry. — The fruit of V. 

 canadense Kalm. Native of northern North America. Collected by 

 H. H. Rusby at Marlboro, New Hampshire, July 13, 1919. 



3924. Another form of the preceding, having the leaf margin crenate-dentate. 



Same locality and date. 



