Coix exploded from Hooghly

[surajit koley]

Sir,

Please do not laugh at me if i did make some silly mistake. I am not used to it. I found a Coix very near my home, yesterday, and tried to dissect it!

Let me try to ID this species based on its spikelet only! 

Well, large wings on glumes of male spikelet = C. gigantea, but are those wings large enough? I am not sure because i haven't seen Coix lacryma-jobi yet!

Species : Coix gigantea?

H & H : grass in roadside water logged ditch, about 6 feet high above the water surface

Date : 25/10/12

Place : Hooghly

Thank you & Regards,

surajit

[jmgarg1]

Forwarding again for Id confirmation or otherwise please.

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With regards,
J.M.Garg

http://en.wikipedia.org/wiki/User:Jmgarg1

'Creating awareness of Indian Flora & Fauna'
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): http://commons.wikimedia.org/wiki/Category:J.M.Garg. You can also use them for free as per Creative Commons license attached with each image.

For identification, learning, discussion & documentation of Indian Flora, please visit/ join our Efloraofindia Google e-group: http://groups.google.co.in/group/indiantreepix (more than 2000 members & 1,37,000 messages on 31/10/12) or Efloraofindia website: https://sites.google.com/site/efloraofindia/ (with a species database of more than 7500 species).

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

[surajit koley]

Sir,

Attaching more photos of this grass, recorded on 25/10/12, at the same place and of the same population.

Thank you & Regards,

surajit

[manoj chandran]

Good work. Only two possibilities are  Coix gigantea and Coix aquatica. See whether the leaves are clothed with very dense glandular bristle like hairs on the upper surface and also see if the stems are succulent and have floating roots at the nodes.

[surajit koley]

Sir,

Will check the leaves, stem and roots on coming Sunday and report the same by evening.

Thank you,

Regards,

surajit

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[ushadi Micromini]

Manoj:
What is a floating root?
how doe it different from other roots
any good english (for lay people kinda ) description?
and line drawings?

thanks
Usha di
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Usha di
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[surajit koley]

Good evening Sir,

Visited the grass at the same place today. Could not find any hair on leaf surface and leaf base. However, the place is so densely populated by wild herbs and climbers it was not possible to see through them whether there was any floating root. It was also not possible to enter into the ditch. It appears to me that the stem is not succulent, attaching a picture (pic DSCN6667) of a stem, cut midway.

I have uprooted one, might be a branch (pic DSCN6657). I give here the stats:-

1) no hair or glandular hair on leaf

2) looks like stem is not succulent

3) seems to be no floating roots

Height : 5.5 feet, nodes 10, rooting at lower 4 nodes, diameter less than 1 cm, stem slightly compressed

leaf : blade 67 cm x 4.7 cm + 14 cm sheath, upto node, covering the stem. upper surface (very) slightly rough, under surface glabrous

It looks like that this grass is same Coix gigantea, recorded at another place, and have been identified by you in another post - https://groups.google.com/d/topic/indiantreepix/DSlTblj9k0I/discussion. In such case i would like to add that this grass is very common here, growing on roadside, ditches, uncultivated lands, low land beside rail tracks and in wasteplace.

Thank you very much,

Regards,

surajit

On Thu, Nov 1, 2012 at 10:58 PM, manoj chandran <mach...@gmail.com> wrote:

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[jmgarg1]

Forwarding again for Id confirmation or otherwise please.

---------- Forwarded message ----------
From: surajit koley <surajitno...@gmail.com>

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[surajit koley]

Sir,

This grass is also Coix gigantea, identified by Manoj Sir, also in another post/thread - https://groups.google.com/d/topic/indiantreepix/DSlTblj9k0I/discussion.

Thank you very much.

Regards,

surajit

[ushadi Micromini]

is the white pith edible for any animal ?

usha di

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Usha di
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[surajit koley]

Usha Di,

This grass is very common in the places i visit everyday. I haven't seen any cow or goat eating any part of this grass. The reason may lie in -

1) these days cows or goats are not kept free, for grazing

2) usually these grasses grow in ditches on roadside and rail-tracks and in waste-places where domesticated ruminants are unlikely to visit, i think

3) there may also be some physiological aspects that i do not know

Thank you & Regards,

surajit

[manoj chandran]

Coix is supposed to be a good fodder grass. Kindly feed the leaves/stem to cattle to check its palatibility. 

[surajit koley]

Sir,

I will try to find it out, i remember this difference with Chionachne.

Thank you,

Regards,

surajit

[surajit koley]

Sir,

Our helping hands confirm today that their cows eat this grass (leaves). They also tell me that they call this grass GARGORI in Bengali. Though Coix lacryma-jobi is known as GARGORI in Bengali, i think it is a general term used for similar looking grasses.

Thank you,

Regards,

surajit

[J.M. Garg]

Relevant feedback from another thread:

.............. Coix gigantea (both Hoogly photos) .....

It is clear that Chionachne koenigii is definitely different from Coix gigantea even when treated as Chionachne gigantea. As per priority rule, the genus Coix will prevail over Chionachne, even if someone wants to consider both under the same genus. But there are very distinct differences between the two genera. The new combination of Chionachne gigantea with all the others being treated as synonyms is published in the revision of Chionachne in Blumea. But definitely there is some mistake. I have not yet gone through the full paper of revision of Chionachne published in Blumea. Once I get a copy of this and go through, I will respond further.

---------- Forwarded message ---------
From: surajit koley <surajitno...@gmail.com>

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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 3,000 members & 3,00,000 messages on 23.8.18) or Efloraofindia website (with a species database of more than 13,000 species & 3,00,000 images of which more than 2,00,000 images are directly displayed on 30.8.19).

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.

[dr.rakesh Singh]

Thanks , Garg sir . 

I have one type in Surat and another from Siwan , Bihar . 

They were identified as Coix aquatica and Coix lacryma-jobi respectively . 

I too believed so , based on FOI and endorsement by many knowledgeable people , on Indian Flora . 

But now , I guess , I have to post them . 

.....

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[J.M. Garg]

Yes. that will be better.

[J.M. Garg]

Thanks a lot, Manoj ji.

---------- Forwarded message ---------
From: Manoj Chandran
Date: Mon, 2 Dec 2019 at 21:57
Subject: Re: [efloraofindia:136328] Coix exploded from Hooghly
To: J.M. Garg <jmg...@gmail.com>

The broad wings of glume of male spikelet, beaked involucre as seen from the longitudinal section of involucre and the habitat (water logged ditch, 6 feet high above water surface), suggests Coix aquatica. It would be nice to see the dissected involucre of other Coix species also. A photo of the whole plant would be useful for confirmation.

On Mon, Dec 2, 2019 at 10:33 AM J.M. Garg <jmg...@gmail.com> wrote:

[J.M. Garg]

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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 3,000 members & 3,00,000 messages on 23.8.18) or Efloraofindia website (with a species database of more than 13,000 species & 3,00,000 images of which more than 2,00,000 images are directly displayed on 30.8.19).

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.

[J.M. Garg]

---------- Forwarded message ---------
From: surajit koley <surajitno...@gmail.com>

Date: Tue, 3 Dec 2019 at 21:40
Subject: Re: [efloraofindia:336719] Coix exploded from Hooghly
To: J.M. Garg <jmg...@gmail.com>

Thank you Sir, and many thanks to Manoj Sir & Rakesh Sir for the ongoing discussion.

Regards

Surajit Koley

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[dr.rakesh Singh]

Now , I think I have the visual cues for Coix aquatica . Courtesy Surajit ji and Manoj ji ...thank you !!!

These posts I shall be going through many many times !!!

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