1. Comparative anatomy of the leaf‐bearing Cactaceae. I. Foliar vasculature of Pereskia, Pereskiopsis and Quiabentia;Bailey I. W.;J. Arnold Arbor.,1960
2. Comparative anatomy of the leaf‐bearing Cactaceae. II. Structure and distribution of sclerenchyma in the phloem of Pereskia, Pereskiopsis, and Quiabentia;Bailey I. W.;J. Arnold Arbor.,1961
3. Comparative anatomy of the leaf‐bearing Cactaceae. III. Form and distribution of crystals in Pereskia, Pereskiopsis and Quiabentia;Bailey I. W.;J. Arnold Arbor.,1961
4. Comparative anatomy of the leaf‐bearing Cactaceae. VII. The xylem of pereskias from Peru and Bolivia;Bailey I. W.;J. Arnold Arbor.,1963