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XVIII.—Tristichia ovensi gen. et sp. nov., a Protostelic Lower Carboniferous Pteridosperm from Berwickshire and East Lothian, with an Account of some Associated Seeds and Cupules*

Published online by Cambridge University Press:  30 May 2017

Albert G. Long
Albert G. Long*
Affiliation:
Berwickshire High School, Duns
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Synopsis

Tristichia ovensi is a Lower Carboniferous Pteridosperm known from both petrifactions and compressions. The stems possess a triradiate protostele and some show secondary xylem. The petioles have a butterfly-shaped trace and dichotomize repeatedly forming very slender axes sometimes bearing minute terminal pinnules similar to those of Moresnetia zalesshyi Stockmans. Associated with Tristichia are seeds and cupules of Stamnostoma huttonense and less frequently compressions of seeds borne terminally on very fine dichotomous pedicels.

Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 64 , Issue 18: 1960-1961 “Tristichia Ovensi” Gen. Et Sp. Nov., a Protostelic Lower Carboniferous Pteridosperm from Berwickshire and East Lothian, with an Account of some Associated Seeds and Cupules , 1961 , pp. 477 - 489
Copyright
Copyright © Royal Society of Edinburgh 1961

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Footnotes

*

This paper was assisted in publication by a grant from the Carnegie Trust for the Universities of Scotland.

References

References to Literature

Arber, E. A. N., and Goode, R. H., 1915. “Some Fossil Plants from the Devonian Rocks of North Devon”, Proc. Camb. Phil. Soc., 18, 96–99.Google Scholar
Barnard, P. D. W., 1960. “Studies on Some Lower Carboniferous Plants from East Lothian”, Ph.D. Thesis (London University), 109-115.Google Scholar
Gordon, W. T., 1938. “On Tetrastichia bupatides: A Carboniferous Pteridosperm from East Lothian”, Trans. Roy. Soc. Edin., 59, 351–370.Google Scholar
Kidston, R., 1923-1925. “Fossil Plants of the Carboniferous Rocks of Great Britain”, Mem. Geol. Surv. U.K., 2, Pl. CX, figs. 4-7.Google Scholar
Kidston, R., and Gwynne-Vaughan, D. T., 1912. “On the Carboniferous Flora of Berwickshire. I. Stenomyelon tuedianum ”, Trans. Roy. Soc. Edin., 48, 265.CrossRefGoogle Scholar
Long, A. G., 1960. “ Siamnostoma huttonense gen. et sp. nov.—A Pteridosperm Seed and Cupule from the Calciferous Sandstone Series of Berwickshire”, Trans. Roy. Soc. Edin., 64, 201–215.Google Scholar
Stockmans, F., 1948. “Végétaux du Dévonien Supérieur de la Belgique”, Mém. Mus. Hist. Nat. Belg., 110, 35 and Pl. IX, figs. l-7a.Google Scholar
White, E. I., 1927. “The Fish-Fauna of the Cementstones of Foulden, Berwickshire”, Appendix by Edwards, W. N., Trans. Roy. Soc. Edin., 55, 287.CrossRefGoogle Scholar