Ludwigia Species for ID : Atlanta, Georgia : 14JAN19 : AK-22

[Aarti S. Khale]

Seen near a water body in Atlanta during my visit in Oct,18.

For Species id please.

Aarti

[carmelita]

I believe it is Ludwigia hexapetila; non-native in Georgia, also found in Florida (as well as in the ditch in my front yard!). Thank you.

It is difficult to tell apart from L. grandiflora. Here are two links with detailed explanations.

https://plants.ifas.ufl.edu/wp-content/uploads/files/caip/pdfs/LudwigiaHexapetala-fromAquaticsSpring2014.pdf

https://plants.ifas.ufl.edu/plant-directory/ludwigia-hexapetala/

[Aarti S. Khale]

Thanks a lot Carmelita Ji.

Regards,

Aarti 

[carmelita]

Please, also look at Ludwigia leptocarpa. Thank you.

On Monday, January 14, 2019 at 12:06:25 AM UTC-5, Aarti S. Khale wrote:

[Aarti S. Khale]

Thanks.

I will check for both suggested ids.

Regards,

Aarti

--
You received this message because you are subscribed to a topic in the Google Groups "efloraofindia" group.
To unsubscribe from this topic, visit https://groups.google.com/d/topic/indiantreepix/v-gQ-hsd9VE/unsubscribe.
To unsubscribe from this group and all its topics, send an email to indiantreepi...@googlegroups.com.
To post to this group, send email to indian...@googlegroups.com.
Visit this group at https://groups.google.com/group/indiantreepix.
For more options, visit https://groups.google.com/d/optout.

[Aarti S. Khale]

Carmelita Ji,

Adding another picture which is better.

Hope it helps.

Regards,

Aarti  

[carmelita]

Thank you for the additional and most excellent photo.

There are several scientific papers that explain the difficulty in differentiating between Ludiwigia grandiflora and L. hexipetala.
One would need to measure the petal length, the sepal length and look at the chromosomes.
One a hexaploid and one is a decaploid.
http://www.guynesom.com/Ludwigiagrandiflora.pdf

To add to the confusion, there are also naturally-occurring hybrids of the two.

This link leads to an explanation of how closely we must look to identify Ludiwigia while in the field:
https://plants.ifas.ufl.edu/wp-content/uploads/files/caip/pdfs/LudwigiaIDGuide.pdf

On Monday, January 14, 2019 at 12:06:25 AM UTC-5, Aarti S. Khale wrote:

[Aarti S. Khale]

Carmelita Ji,

I missed replying to this post.

Thanks for all the links and additional information.

Regards,

Aarti

[J.M. Garg]

Forwarding again for Id assistance please.

Some earlier relevant feedback:

I believe it is Ludwigia hexapetila; non-native in Georgia, also found in Florida (as well as in the ditch in my front yard!). Thank you. It is difficult to tell apart from L. grandiflora. Here are two links with detailed explanations. https://plants.ifas.ufl.edu/wp-content/uploads/files/caip/pdfs/LudwigiaHexapetala-fromAquaticsSpring2014.pdf

https://plants.ifas.ufl.edu/plant-directory/ludwigia-hexapetala/ - from Carmelita ji

Please, also look at Ludwigia leptocarpa. Thank you.  -from Carmelita ji

Adding another picture which is better. Hope it helps. Regards, Aarti

Thank you for the additional and most excellent photo.

There are several scientific papers that explain the difficulty in differentiating between Ludiwigia grandiflora and L. hexipetala. One would need to measure the petal length, the sepal length and look at the chromosomes. One a hexaploid and one is a decaploid. http://www.guynesom.com/Ludwigiagrandiflora.pdf

To add to the confusion, there are also naturally-occurring hybrids of the two. This link leads to an explanation of how closely we must look to identify Ludiwigia while in the field:

https://plants.ifas.ufl.edu/wp-content/uploads/files/caip/pdfs/LudwigiaIDGuide.pdf- from Carmelita ji

--
You received this message because you are subscribed to the Google Groups "efloraofindia" group.
To unsubscribe from this group and stop receiving emails from it, send an email to indiantreepi...@googlegroups.com.

To post to this group, send email to indian...@googlegroups.com.
Visit this group at https://groups.google.com/group/indiantreepix.
For more options, visit https://groups.google.com/d/optout.

--

With regards,
J.M.Garg

'Creating awareness of Indian Flora & Fauna'

Winner of Wipro-NFS Sparrow Awards 2014 for efloraofindia. 

For identification, learning, discussion & documentation of Indian Flora, please visit/ join our Efloraofindia Google e-group (largest in the world- more than 2975 members & 3,00,000 messages on 25.7.18) or Efloraofindia website (with a species database of more than 12,000 species & 3,00,000 images of which 1,00,000 are directly displayed).

The whole world uses my Image Resource of more than a thousand species & eight thousand images of Birds, Butterflies, Plants etc. (arranged alphabetically & place-wise). You can also use them for free as per Creative Commons license attached with each image.

Also author of 'A Photoguide to the Birds of Kolkata & Common Birds of India'.

[Gurcharan Singh]

Forwarding for ID

Distributed as Ludwigia leptocarpa (USA) ?

Group discussion at

Ludwigia Species for ID : Atlanta, Georgia : 14JAN19 : AK-22 (google.com)

[Gurcharan Singh]

Forwarding for ID

Distributed as Ludwigia leptocarpa (USA) ?

Group discussion at

Ludwigia Species for ID : Atlanta, Georgia : 14JAN19 : AK-22 (google.com)

---------- Forwarded message ---------
From: Aarti S. Khale <aarti...@gmail.com>
Date: Monday, January 14, 2019 at 10:36:25 AM UTC+5:30
Subject: Ludwigia Species for ID : Atlanta, Georgia : 14JAN19 : AK-22
To: efloraofindia <indian...@googlegroups.com>

[Aarti S. Khale]

Gurcharan Ji,

Thanks for forwarding my post from Atlanta.

Regards,

Aarti

[Saroj Kumar Kasaju]

Ludwigia leptocarpa (Nutt.) H.Hara looks good.

https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.knowyourweeds.com%2Fen%2Fweeds%2FLudwigia_leptocarpa&psig=AOvVaw3NQgskFFC7L2KbtWMNrVLU&ust=1768555608418000&source=images&cd=vfe&opi=89978449&ved=0CBQQjhxqFwoTCNDr4qadjZIDFQAAAAAdAAAAABAE

Thank you

Saroj Kasaju

[Aarti S. Khale]

Thanks Saroj Ji.

Yes, I agree with you.

Looks close.

Regards,

Aarti

[Saroj Kasaju]

OK Aarti ji.

Thank you.

Saroj Kasaju