. The Canadian naturalist and geologist. Natural history -- Periodicals. Devonian Plants. 9 3. Prototaxites, gen. nov. (Fig. 4.) Woody trunks with concentric rings of growth and medullary rays. Cells of pleurenchyma scarcely in regular series^ thich- walled, and cylindrical^ with a double series of spiral fibres. Disc-structure indistinct in the specimens observed. I propose the above generic appellation for a tree having the spirally marked cells characteristic of the genera Taxites and Spiropitys of Goeppert, but differing from any conifer known to me in the cylindrical form and loose aggreg
. The Canadian naturalist and geologist. Natural history -- Periodicals. Devonian Plants. 9 3. Prototaxites, gen. nov. (Fig. 4.) Woody trunks with concentric rings of growth and medullary rays. Cells of pleurenchyma scarcely in regular series^ thich- walled, and cylindrical^ with a double series of spiral fibres. Disc-structure indistinct in the specimens observed. I propose the above generic appellation for a tree having the spirally marked cells characteristic of the genera Taxites and Spiropitys of Goeppert, but differing from any conifer known to me in the cylindrical form and loose aggregation of the wood- cells, as seen in the cross-section, in which particular it more. Fig. 4 a. 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 Natural History Society of Montreal. Montreal, Dawson
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