Coix vs Chinoachne

dr.rakesh Singh

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Nov 10, 2019, 9:42:20 AM11/10/19

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Here is a question to Poaceae experts ...Are we sure the posts included in subpage Chinoachne gigantea are Chinoachne gigantea and not Coix species ?
How to differentiate two genera ?

J.M. Garg

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Nov 29, 2019, 3:12:49 AM11/29/19

to efloraofindia, dr.rakesh Singh

Here is a question to Poaceae experts ...Are we sure the posts included in subpage Chionachne gigantea are Chionachne gigantea and not Coix species ?
How to differentiate two genera ? - from Rakesh ji.

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J.M. Garg

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Dec 1, 2019, 11:04:17 PM12/1/19

to efloraofindia, dr.rakesh Singh

Thanks a lot, Manoj ji.

---------- Forwarded message ---------
From: Manoj Chandran
Date: Sun, 1 Dec 2019 at 22:49
Subject: Re: [efloraofindia:334650] Coix vs Chinoachne
To: J.M. Garg <jmg...@gmail.com>

The page contains both Chionachne koenigii (the pench photo) and many of the other photos are Coix spp., Coix aquatica (Orissa photo), Coix lachryma-jobi and Coix gigantea (both Hoogly photos) and also male spikelets of Polytoca digitata (The Thane photos which myself had misidentified as Coix gigantea male spikelets). The Guntur photos as again Chionachne koenigii.

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.

J.M. Garg

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Dec 1, 2019, 11:48:21 PM12/1/19

to efloraofindia, dr.rakesh Singh

Thanks a lot, Manoj ji,

Currently WCSP gives as below:

Polytoca gigantea (J.Koenig) Mabb., Mabberley's Pl.-Book, ed. 4: 1102 (2017).

Homotypic Names:

* Basionym/Replaced Synonym

Heterotypic Synonyms:

J.M. Garg

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Dec 2, 2019, 11:15:35 PM12/2/19

to efloraofindia, dr.rakesh Singh

Dear Dr. Rakesh Singh,

Thank you very much for the document. I have gone through it in detail. The treatment of Chionachne gigantea is not at all convincing. Chionachne koengii is a very good species and cannot be equated with Coix gigantea or Chionachne gigantea. The illustration provided against Chionachne gigantea is actually Coix gigantea and does not in any way match other Chionachne species. I suggest authors should retain the name Chionachne koengii, which is not that common and very much different from Coix gigantea, which is actually very common. The introductory part of the revision is also very vague and lacks proper structure to understand.

Regards...

Manoj Chandran

ushadi

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Dec 3, 2019, 5:45:44 AM12/3/19

to efloraofindia, dr.rakesh Singh

nice discussion

but i dont see the paper sent in by Rakesh

Regards

Ushadi

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J.M. Garg

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Dec 3, 2019, 7:56:40 AM12/3/19

to efloraofindia, dr.rakesh Singh, Ushadi micromini

Paper sent separately to him.

To view this discussion on the web, visit https://groups.google.com/d/msgid/indiantreepix/CANAwU1W4TsQB2J3PWZ_MqP8Uni_XRL9%3Dh-edSspx6zDLV1B%2BGw%40mail.gmail.com.

ushadi

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Dec 3, 2019, 9:17:38 AM12/3/19

to J.M. Garg, efloraofindia, dr.rakesh Singh

is it possible for me to see it, please

Regards

Ushadi

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