Summary
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1.
Marchantia palmata which grows commonly at Ootacamund on the Nilgiris forms plenty of androgynous receptacles.
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2.
These receptacles start as purely female receptacles, but soon one or more proliferations bearing antheridia grow out from its under surface.
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3.
These proliferations are merely the archegonia-bearing lobes of the female receptacle which become active again and continue to grow further into narrow elongated outgrowths.
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4.
The proliferations produce at first sexual structures which are intermediate between an archegonium and an antheridium and later on typical antheridia. A consideration of these intermediate structures suggests that antheridia and archegonia are homologous structures.
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5.
A fungus forming pycnidia is generally present in the liverwort. It could not be dicided whether the change of sex in the receptacle is due to this fungal attack.
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Additional information
Communicated by Dr. M. O. P. Iyengar,m.a., ph.d. (Lond.),f.l.s.
From the University Botany Laboratory, Madras. This paper formed part of a Thesis submitted for the Degree of Master of Science of the University of Madras. It was read before the Annual Meeting of the Indian Academy of Sciences at Madras on 20th December 1938.
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Srinivasan, K.S. On the developmental morphology of androgynous receptacles inMarchantia palmata nees. Proc. Indian Acad. Sci. 10, 88–97 (1939). https://doi.org/10.1007/BF03047665
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DOI: https://doi.org/10.1007/BF03047665