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Treub, M. (2) L'organe femelle et L'Apogamie du Balanophora 



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(2) On Alternation of Generations in the Thallophytes. 



Ibid., p. 321, 1879. 



(3) Apospory in the Characece. Ann. Bot., i., p. 177, 1887. 



Wager, H. On the Structure and Reproduction of Cystopns 



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Science Progress, N. S., i., 1897. 

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William H. Lang. 



