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24. Zuckia Standley
Zuckia Standley, J.Wash. Acad. Sci., 5: 58 (1915)
Small shrub, dioecious. Pistillate flowers solitary or in clusters, these in interrupted spikes or panicles; bracteoles 2, enlarged, connate almost up to the top, with 2 wings and 4 keels; stigmas 2. Seeds horizontal; embryo annular. One sp., Z. arizonica Standley , endemic to Arizona.