Centrospermocarpon mohgaonse

Name

Centrospermocarpon mohgaonse

Rank

Species

Generic Name

[Genus] Centrospermocarpon

Authors (Pub.)

Patil S. W. Dahegaonkar R.  

Publication

Centrospermocarpon mohgaonse sp. nov. a new species of capsular fruit from the Deccan Intertrappean beds of Mohgaonkalan, District-Chhindwara, M. P., India [2020/2]

Journal

International Research Journal of Engineering & Technology

Issue

Special Issue A7

Page number

613

Year

2020

Fossil Status

fruits

Stratigraphy

Maastrichtian

Strat. comment

Deccan Intertrappean

Location

Mohgaonkalan, Madhya Pradesh, District Chhindwara, India

Paleoregion

Gondwana (Indostan)

Data for Holotypus

Repository

Department of Botany, Dr. Ambedkar College, Chandrapur, India

Repository Number

SWP/Ang.Fruit

Num

pl. 1-9

Pub.

Centrospermocarpon mohgaonse sp. nov. a new species of capsular fruit from the Deccan Intertrappean beds of Mohgaonkalan, District-Chhindwara, M. P., India [2020/2]

Diagnosis

dicotyledonous, capsular, obovate fruit. It is multicarpellary, multilocular, syncarpous with axile placentation having many ovules with loculisidal dehiscence. Many locules are seen with well preserved seeds. The diameter of locule is 1.1x1.2 mm in size. Seeds are arranged in axile placentation. The average total number of seeds in the fruit is found to be 12. The seeds are obovate, gradually become narrow towards the apex and measures 1.1x1.2 mm in size. The fruit wall or pericarp is well preserved and moderately thick, measures about 520 µm and is differentiated into outer epicarp, middle mesocarp and inner endocarp. Four conspicuous notches of about 157 µm are seen distinctly on pericarp. Epicarp is outermost layer of the fruit and is measuring about 44 µm in thickness. It is separated during preservation and is seen lying some distance away from the mesocarp. In between epicarp and endocarp parenchymatous mesocarp is present. It appears to be 150 µm in thickness. Endocarp is the innermost layer of pericarp and measures about 326 µm in thickness and consists of 3-7 layers of thick walled hexagonal cells. The seed coat is bitegmic, outer seed coat is testa and inner seed coat is tegmen. The testa is made up of 6-7 layers of elongated cells measuring about 1044 µm in thickness. The tegmen is 2-3 layers of cells in thickness and measures about 144 µm. A gap is observed between the tegmen and the embryo. Embryo appears to be made up of thin walled cells with single layered epidermis. It is well preserved, relatively large and curved. The embryo is dicotyledonous having two cotyledons with endosperm.