Zizyphus siwalicus Lakhanpal, 1965 species accepted

Zizyphus kathgodamensis Prasad, 1994 species accepted

Zizyphus cliffwoodensis Berry, 1907 species accepted

Zizyphus dakotensis Lesquereux, 1891 species accepted

Ceanothus meigsii (Lesquereux, 1869) species accepted

Ceanothus cinnamomoides (Lesquereux, 1871) species accepted

Zizyphus intertrappea Chitaley et al., 1970 species accepted

Ceanothus fibrillosus (Lesquereux, 1872) species accepted

Zizyphus meekii Lesquereux, 1872 species accepted

Zizyphus groenlandicus Heer, 1883 species accepted

Zizyphus lesquereuxii Knowlton, 1898 species accepted

Zizyphus oblongus Hollick, 1906 species accepted

Zizyphus californicus Knowlton & Cockerell, 1919 species accepted

Zizyphus microphyllus Lesquereux, 1878 species synonym

Zizyphus meigsii (Lesquereux, 1869) species synonym

Zizyphus serrulatus Ward, 1885 species accepted

Zizyphus townsendi Knowlton, 1894 species accepted

Zizyphus cinnamomoides (Lesquereux, 1871) species synonym

Zizyphus chubutensis Berry, 1937 species accepted

Zizyphus longifolia Newberry, 1882 species accepted

Zizyphus fibrillosus (Lesquereux, 1872) species synonym

Zizyphus lamarensis Berry, 1912 species accepted

Zizyphus lewisiana Hollick, 1894 species accepted

Zizyphus paliurifolius Knowlton, 1918 species accepted

Zizyphus laurifolius Berry, 1914 species accepted

Zizyphus piperoides Lesquereux, 1878 species accepted

Zizyphus elegans Hollick, 1894 species accepted

Zizyphus falcatus Berry, 1916 species accepted

Zizyphus distortus Lesquereux, 1873 species accepted

Zizyphus beckwithii Lesquereux, 1883 species accepted

Zizyphus obtusa Kirchner, 1898 species accepted

Zizyphus miocenicus Prasad, 1994 species accepted