A new chromosome number in Arctostaphylos uva-ursi

Populations resembling Arctostaphylos uva-ursi (L.) Spreng. var. coactilis Fernald and MacBride growing on Long Island, New York, U.S.A., provided material for cytological study which resulted in the discovery of a new chromosome number for the species, 2n = 78. These plants differ from the most common expression of this variety in having more linear leaves, a condition that may be associated with a physiological tolerance for relatively high levels of salt in the substratum.