REPORT OF A BICARPELLARY FLOWER FROM THE DECCAN INTERTRAPPEAN SERIES OF MOHGAONKALAN, INDIA.

Sharadkumar P.  Patil

doi:10.36676/urr.2023-v10i4-011

Authors

Sharadkumar P. Patil

DOI:

https://doi.org/10.36676/urr.2023-v10i4-011

Keywords:

Daccan, Intertrappaean, beds, dicot, flower, pertified.

Abstract

The present flower from its oblique transverse section appears to be the smaller in size among the flowers reported from the Deccan Intertrappean series. It is 1.00 X 1.22 mm in diameter. Swollen at middle and tapering at its ends indicate its companulate shape. The flower is actinomorphic, hermaphrodite, pentamerous and hypogynous. The perianth lobes are ten in numbers arranged in two whorls of 5+5 each. The outer whorl contains five tepals may be termed as calyx while the inner five may be as corolla. Stamens are five in number, polyandrous giving pentamerous appearance to the flower. Pollen grains are tricolpate and psilate without any external outgrowth. The anther is basifixed. Gynoecium is bicarpellary, syncarpous with superior, bilocular ovary. Each locule contains single ovule in it with axile placentation. Ovary wall is multilayered and smooth. The present flower is totally different from the reported fossil flowers and living genera of modern families. Hence it is kept under separate form genus Mohgaoanthus deccanii gen. et sp. nov.

References

Ainapore, N.A. (1994). Research on Deccan Intertrappean fossiliferous flora of India, Inclisive of the Palaeobiochemistry of Enigmocarpon parijai. Ph. D. Thesis, Nagpur University, Nagpur.

Chitaley S.D. (1955). Contribution to the knowledge of the Deccan Intertrappean flora of India. Ph. D. Thesis ,University of Reading, England.

Chitaley S.D. (1964). Further observation in Sahnipushpam. J.Ind. Bot. Soc. XLIII: 69-74.

Chitaley S.D. & Kate V. R. (1972). On a new petrified flower Deccananthus savitrii gen. et sp. nov. from the Deccan Intertrappean beds of India. Paleobotanist, 21 (3): 317 – 320.

Chitaley S.D. & Patel M. Z. (1975 ). Raoanthus intertrappea a new petrified flower from India. Palaeontographica, 153 : 141 – 149.

Dayal R. (1967). Critical remarks of Sahnianthus dinectrianum Shukla. Palaeobotanist 15(3) : 316-317.

Paradkar S. A. (1973). Chitleypushpam mohgaonse gen. et sp. nov. from the Deccan Intertrappean beds of India. Palaeobotanist 20(3) : 334-338.

Prakash U. (1955). On the structure and affinities of Sahnipushpum glandulosum sp. nov. from the Deccan Intertrappean series. Palaeobot. 4 : 91-100.

Prakash U. & Jain R. K. (1963). Further observation on Sahnipushpam shukla. The Palaeobotanist 12 : 128-138.

Shukla, V.B. (1944). On Sahnianthus a new petrified flower from Intertrappean beds of Mohgaonkalan and its relation with fruit Enigmocarpon parijaii Sahni from the same locality. Proc. Nat. Acad. Sci. India 14 : 1-39.

Shukla, V.B. (1958). Sahnianthus dinectrianum sp. nov. a new species of petrified flower Sahnianthus from Eocene beds of Deccan. J. palaeont soc. India 3 : 114-118.

Verma, J.K. (1956). On a inflorence of new petrified monocot flower- Shuklanthus superbum gen. et sp. nov. from the Deccan Intertrappean series of India. J. Palaeontological Soc. Ind. 3 : 185-200.