further Notes on Seed Structure. 



15£ 



appression in the peculiar strobilar type so much affected by 

 the group throughout the Mesozic, but even so much the more 

 surely conserved as to permit the freest comparison with the 

 ancestral singly borne multilobate leafy seeds of Paleozoic times. 



Yale University Museum, 

 New Haven, Conn. 



References. 



(1) 1870. — Carruthers, William. On Fossil Cycadean Stems from the 



Secondary Rocks of Britain. Trans. Linn. Soc. of London, vol. 

 xxxi, pp. 675-708, pis. liv-lxiii. 



(2) 1890. — Solms-Laubach, H. Graf zu. Ueber die Fructification von 



Bennettit.es Gibsonianus Carr. Bot. Zeit. (Leipzig), pp. 789- 

 798, 805-816, 821-833, 843-847, pis. ix, x [Translation in Ann. 

 of Bot., vol. v, Nov. 1891, pp. 419-454, pis. xxv, xxvi]. 



(3) 1894. — Lignier, O. Vegetaux Fossiles de Normandie. Structure et 



Affinite's du Bennettites Morierei Sap. et Mar. (sp.). Mem. Soc. 

 Linn, de Normandie (Caen), vol. xviii, pp. 5-78, pis. i-vi. 



(4) 1896. — Fliche, P. Etudes sur la Flore Fossile de l'Argonne (Albien- 



Cenomanien). Bull. Soc. Sci. de Nancy, pp. 196, 17 plates. 



(5) 1899. — Ward, Lester F. Cretaceous Formation of the Black Hills as 



indicated by the Fossil Plants fin part]. U. S. Geol. Surv., 

 19th Ann. Report, pp. 621-624, pi. cxvi. 



(6) 1899. — Wieland, G. R. A Study of Some American Fossil Cycads. 



Part III, The Female Fructification of Cycadeoidea. Amer. 

 Jour. Sci. (4), vol. vii, pp. 383-391, pis. viii-x. 



(7) 1903. — Sellards, E. H. Codonotheca, a new type of Spore-Bearing 



Organ from the Coal Measures. Ibid., vol. xvi, pp. 87-95, pi. 



VIII. 



(8) 1904.— Oliver, F. W. and Scott, D. H. On the Structure of the 



Paleozoic seed Lagenostoma Lomaxi, with a Statement of the 

 Evidence on which it is referred to Lyginodendron. Phil. 

 Trans. Roy. Soc. London, ser. B, vol. cxcvii, pp. 193-247, pis. 

 iv-x. 

 (8') 1905. — Newell Arber, E. A. On some new species of Lagenostoma, 

 a type of Pteridospermous Seed from the Coal Measures. Proc. 

 Roy. Soc, vol. B76, pp. 245-259, 2 pis. 



(9) 1906. — Wieland, G. R. American Fossil Cycads. Carnegie Institu- 



tion of Washington, Publication No. 34, viii + 296 pages and 51 

 plates. 



(10) 1906. — Oliver, F. W. On Physostoma elegans Williamson, an archaic 



type of seed from the Paleozoic Rocks. Ann. of Bot., vol. xxiii, 

 No. 89, pp. 73-116, pis. v-vn. 



(11) 1911. — Oliver, F. W. and Salisbury, E. J. On the Structure and 



Affinities of the Paleozoic Seeds of the Conostoma Group. Ibid. , 

 vol. xxx, No. 97, pp. 1-50 and pis. i-iii. 



(12) 1911. — Berridge, Emily M. On some points of resemblance between 



Gnetalean and Bennettitean seeds. The New Phytologist, vol. 

 x, No. 4 (April), pp. 140-144. 



