. The origin of a land flora, a theory based upon the facts of alternation. Plant morphology. STELAR THEORY 191. Fig. 96. A, transverse section of the stem of Eguisetum palustre (X26), and B, part of it X 160. C, transverse section of the rhizome of Eqms. sylvaticum (X26), and Dt part of it X 160. E, transverse section of the rhizome of Eguis. litorale (X26), and E, part of it X 160. fc=central cavity. z/=vallecular canals. c=carinal canals. $=sheath of separate strands. «j=outer, ;'$=inner general endodermis : in A, C, and E the endo- dermis is indicated by a dotted line. (After Pfitzer.) Fro
. The origin of a land flora, a theory based upon the facts of alternation. Plant morphology. STELAR THEORY 191. Fig. 96. A, transverse section of the stem of Eguisetum palustre (X26), and B, part of it X 160. C, transverse section of the rhizome of Eqms. sylvaticum (X26), and Dt part of it X 160. E, transverse section of the rhizome of Eguis. litorale (X26), and E, part of it X 160. fc=central cavity. z/=vallecular canals. c=carinal canals. $=sheath of separate strands. «j=outer, ;'$=inner general endodermis : in A, C, and E the endo- dermis is indicated by a dotted line. (After Pfitzer.) From Rab. Krypt. 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 Bower, F. O. (Frederick Orpen), 1855-1948. London, Macmillan and Co. , Ltd.
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