. The British Charophyta. Characeae. Pie. 31.—Lagynophora, Staohe (after Staehe), from Lower Eocene. a, L. libumica, St.; b, L. symmetrica, St. inmaense quantity, two types of tuberculate fruit, a large elUpsoid fruit which we referred to C. helicteres, Brongn., and two very minute forms belonging almost certainly to the genus Tolypella were present. Portions of stems and branchlets were found in one of these beds in fair quantity, also a few stem-nodes with the bases of branch- lets. The cortex of some of the stems is of the single- ranked type (Haplostichse), a type rare at the present time,
. The British Charophyta. Characeae. Pie. 31.—Lagynophora, Staohe (after Staehe), from Lower Eocene. a, L. libumica, St.; b, L. symmetrica, St. inmaense quantity, two types of tuberculate fruit, a large elUpsoid fruit which we referred to C. helicteres, Brongn., and two very minute forms belonging almost certainly to the genus Tolypella were present. Portions of stems and branchlets were found in one of these beds in fair quantity, also a few stem-nodes with the bases of branch- lets. The cortex of some of the stems is of the single- ranked type (Haplostichse), a type rare at the present time, others of the common two-ranked type (Diplo- stichse). I have not so far met with any of the three- ranked type (almost equally common in living species) among Eocene or Oligocene remains. The Eocene and Oligocene of the Paris Basin are. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Groves, James; Bullock-Webster, George Russell, 1858- joint author. London, The Ray society
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