MANTON: PTERIDOLOGY 319 



KiDSTON, R., and W. H. Lang 



1917-1921. Old Red Sandstone plants showing structure from the Rhynie Chert bed, 

 Aberdeenshire, Pts. I-IV. Trans. Roy. Soc. Edinburgh, Vols. 51-52. 

 Notes on fossil plants from the Old Red Sandstone of Scotland. I. Hicklingia 

 Edwardi K. and L. Trans. Roy. Soc. Edinburgh, 53:405-407. 



Krausel, R., and H. Weyland 



1923-1929. Beitrage zur Kenntnis der Devonflora. Pts. I-III. Senckenbergiana. Senck- 

 enberg. Naturf. Ges. Abh., 5:40-41. 



1933. Die Flora des deutschen Mitteldevons. Palaeontographica, Vol. 78(B). 



1935. Neue Pflanzenfunde in rheinischen Unterdevon. Palaeontographica, Vol. 80(B). 



Lang, W. H. 



1898. Apogamy and the development of sporangia on prothalli. Philos. Trans. Roy. 



Soc. London, ser. B, 190:187-238. 



1899. The prothallus of Lycopodium clavatum L., Ann. Bot. London, 13:279-317. 



1902. On the prothalli of OpMoglossum pendulum and Helminthostachys zeylanica. 



Ann. Bot. London, 16:23-56. 



1924. On some deviations from the normal morphology of the shoot in Osinunda 

 regalis. Mem. Manchester Lit. and Philos. Soc, 68:53-67. 



1925-1932. Contributions to the study of the old red Sandstone flora of Scotland. 

 Pts. I-VIII. Trans. Roy. Soc. Edinburgh, Vols. 15-17. 



1931. On the spines, sporangia and spores of Psilophyton princeps Dawson, shown in 



specimens from Gaspe. Philos. Trans. Roy. Soc. London, ser. B, 219:421-442. 



1937. On the plant remains from the Downtonian of England and Wales. Philos. 

 Trans. Roy. Soc. London, ser. B, Vol. 227. 



Lang, W. H., and Isabel C. Cookson 



1930. Some fossil plants of early Devonian type from the Walhalla Series, Victoria, 

 Australia. Philos. Trans. Roy. Soc. London, ser. B, 219:133-162. 



1935. On a flora, including vascular plants, associated with Monograptus in rocks of 

 Silurian age from Victoria, Australia. Philos. Trans. Roy. Soc. London, ser. 

 B, 224:421-449. 



Lang, W. H. 8ee also R. Kidston 



Lawson, a. a. 



1917a. The prothallus of Tmesipteris tennensis. Trans. Roy. Soc. Edinburgh, 51:785. 



1917b. The gametophyte generation of the Psilotaceae. Trans. Roy. Soc. Edinburgh, 

 52:93. 



Lawton, E. 



1932. Regeneration and induced polyploidy in ferns. Amer. Journ. Bot., 19:303-333. 



Lignier, O. 



1903. Equisetales et Sphenophyllales, leur origine filicineenne commune. Bull. Soc. 



Linn. Normandie, ser. 5, 7:93-137. 



1908. Essai sur revolution morphologique du regne vegetal. Bull. Soc. Linn. Norman- 

 die. (Reprinted 1911.) 



1911. Ce qu'il faut entendre par "le meriophte." Bull. Soc. Bot. France, 57:7-8. 



LlNDLEY, J. 



1853. The Vegetable Kingdom. 3rd ed. London. 



LiNDLEY, J., and W. Hutton 



1831-1837. Fossil Flora of Great Britain. London. 



