Wednesday 23 January 2019

botany - What is the name of this plant, from Bangladesh?


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This is a small plant from my backyard. I have found the flower closes in the evening.



Answer



This plant belong to Malvaceae, and the yellow flowers open towards morning to mid-day.


This plant is most-likely Sida rhombifolia or may be Malvastrum tricuspidatum .


From broad leaves it seems not Sida acuta


Check epicalyx ( made up of bracteoles)... is there is no epicalyx then Sida rhombifolia. If epicalyx is 3, it is Malvastrum tricuspidatum


look also https://en.wikipedia.org/wiki/Sida_rhombifolia,


https://books.google.co.in/books?id=Roi0lwSXFnUC&lpg=PA258&ots=N7DNvrN4UL&dq=malvastrum%20tricuspidatum%203%20epicalyx&pg=PA258#v=onepage&q=malvastrum%20tricuspidatum%203%20epicalyx&f=false



Epicalyx of Malvastrum tricuspidatum :


Malvastrum tricuspidatum corolla calyx epicalyx


C= Corolla (all petals), K= Calyx (all sepals), E= Epicalyx the bracteole


3 bracteoles


3 bracteoles


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