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| Keywords: The Quarterly journal of the Geological Society of London (12981465584).jpg 1859 <br> DAWSON DEVONIAN PLANTS <br> 483 <br> I have noticed above the resemblance of flattened specimens of <br> Psilophyton to ferns of the genus Trichomanites Goeppert To this <br> genus indeed I was disposed to refer the specimens until I found <br> that the internal structure was lycopodiaceous and that the branching <br> filaments are true branchlets covered with minute leaves A com- <br> parison of the plants above described with Trichomanites Beinertii <br> of Goeppert and S henophyllum T hijidum of Lindley and Hutton <br> will show at a glance the strong resemblance that subsists; and <br> since the specimens on which these species are founded do not appear <br> to have exhibited either internal structure or venation I think it <br> still admits of a doubt whether they are really ferns By way of <br> further caution on this point I may remark that in flattened stems <br> either of Psilotum or of its ancient relative the slender woody axis <br> may leave a mark resembling the nervure of a leaf and thus com- <br> plete the resemblance to a frond of Trichomanes <br> Since writing the above Professor G S Newberry has kindly <br> pointed out to me the close resemblance between the first species <br> above described and Haliserites Dechenianus of Goeppert Flora der <br> Uebergangsgebirges p 88 I can scarcely doubt that this so-called <br> fucoid is in reality a plant of the genus above described but in such <br> a state of compression that the stem appears like a narrow frond <br> and the woody axis as a midrib As this plant is said to occur very <br> abundantly at certain levels in the Devonian Series of the Ehine if <br> my suspicions as to its nature be correct further examination might <br> disclose its rhizomes leaves or fructification <br> 2 Lepidodendkon Fig 3 <br> A single species of this genus is found rather plentifully in the <br> beds containing the plants just described and is distinct from any <br> that I have observed in the Coal-formation The specimens observed <br> were all of small size and fragmentary nor was their state of preser- <br> Fig 3 a <br> Fig 3 b <br> Fig 3 c <br> Fig 3 d <br> Fig 3 Lepidodendron Gaspianum a decorticated stem and leaves ; b areoles ; <br> c small branch and leaves ; d decorticated branch and leaves <br> vation very good though most of them were accompanied by the <br> leaves In specimens about two inches in diameter the areoles are <br> It is possible that some of the fragments from the Devonian of the Thiirin- <br> gerwald included by Prof Unger in his order BJiacMopteridea mo j he mQ to <br> Fsilojphyton See Denkschr Kais Akad Wissen Wien vol xi p \6 d 36162048 111474 51125 Page 483 Text v 15 http //www biodiversitylibrary org/page/36162048 1859 Geological Society of London NameFound Gaspianum NameFound Haliserites NameConfirmed Haliserites NameBankID 4921575 NameFound Lepidodendron NameConfirmed Lepidodendron EOLID 13132167 NameBankID 4921583 NameFound Psilophyton NameConfirmed Psilophyton EOLID 10633962 NameBankID 4887866 NameFound Psilotum NameConfirmed Psilotum Sw EOLID 599703 NameFound Trichomanes NameConfirmed Trichomanes EOLID 38112 NameBankID 2644945 NameFound Trichomanites NameConfirmed Trichomanites NameBankID 4879224 Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 15 1859 Geology Periodicals Smithsonian Libraries bhl page 36162048 dc identifier http //biodiversitylibrary org/page/36162048 smithsonian libraries Information field Flickr posted date ISOdate 2014-03-07 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12981465584 2015-08-26 14 51 09 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1859 Photos uploaded from Flickr by Fæ using a script | ||||
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