Is This Lepidium didymum ?

[taffa...@gmail.com]

Dear Members,

Am attaching  photos of a plant which I think is Lepidium didymum. All photos were taken in second half of April 2023. The habitat is the side of a path in Srinagar, It has four sepals two tiny stamens with flat lower ends (1 mm long) and a large ovary with a very short style .Petals are absent. Small squares in all photos except photo3 are 1squaremm. In photo 3 small squares are not visible and visible squares are of 5sqmm area.

An interesting puzzle

 I would like to draw attention to an interesting puzzle regarding this plant, I found the pollen grains to be elliptical or spindle shaped(Fusiform) (See Photo 8 and 9) but a google search shows the pollen grains of this plant  to be somewhat globose. Based on pollen morphology is our Himalayan plant a different subspecies of the European plant ? The Botany Departments of Universities in Himalayan states may like to investigate it further.

Regards

Taffazull

[Saroj Kasaju]

ID looks good !

Thank you.

Saroj Kasaju

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[taffa...@gmail.com]

Dear Saroj ji,

Thanks for confirming

Sincere regards

Taffazull

[Saroj Kasaju]

OK Dr. Taffazul.

Thank you.

Saroj Kasaju

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[Gurcharan Singh]

Beautiful pictures of the commonest weed.

[taffa...@gmail.com]

Dear Gurcharan ji,

Thanks a lot for your appreciation.

What puzzles me is the fusifòrm pollen grains that I saw and photographed.

Of course I depended on Google search for comparision which might have misled me

With sincere regards

Taffazull

[taffa...@gmail.com]

In photo 3 the visible squares are 25 sq mm in area and not 5mm as written.

Correction is requested

Regards

Taffazull

[taffa...@gmail.com]

Two more photos of fusiform pollen grains:

Photo 1 X200

Photo2 X200 (Dark Field )

Regards

Taffazull

[J.M. Garg]

Thanks, Taffazull ji, for the superb presentation.

Yes, appears close to images at 
https://efloraofindia.com/2011/02/19/coronopus-didymus/

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With regards,
J.M.Garg

[taffa...@gmail.com]

Having examined the pollen grains of another crucifer I find that fusiform pollen grains are usual for cruciferae.I was misled by some images on google search to think that they are unusual.

Regards

Taffazull