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Supported by National Science Foundation Grant #13223. The first paper in this series, entitled “Studies of New Albany Shale plants. I.Stenokoleos simplex comb, nov.,” appeared in Amer. Jour. Bot. 47: 115–124. 1960.
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Beck, C.B. Plants of the new albany shale. II. Callixylon arnoldii Sp. Nov.. Brittonia 14, 322–327 (1962). https://doi.org/10.2307/2805249
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DOI: https://doi.org/10.2307/2805249