Chenopodiaceae and Amaranthaceae Week : sk-20 : Amaranthus sp. relook plz

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surajit koley

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Feb 9, 2013, 9:28:35 PM2/9/13
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Sir,

Very recently i posted this plant and Nidhan Sir suggested that it was likely to be Amaranthus viridis L.
  • But, it is too tall & robust to be an Amaranthus viridis L.
  • According to the "Bengal Plants" Amaranthus viridis L. is a slender annual.
  • "Flora of British India" describes :- Amaranthus viridis L. = stem 1-2 ft.; rarely decumbent below; leaves 1-2 in., variable in breath......
  • "Flora Indica" describes :- A. viridis Willd. iv. 388 = ascending, ramous, from one to two feet high......
  • FoP and FoC too describe that A. viridis L. is a smaller herb

Amaranthus pages in the "Bengal Plants" :-
I think this is some other species of Amaranthus, not A. viridis.

Thank you,

Regards,

surajit

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Amaranthus_sp_30jan13_DSCN1886.jpg
Amaranthus_sp_30jan13_DSCN1889.jpg
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J.M. Garg

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Feb 15, 2013, 1:04:40 AM2/15/13
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Forwarding again for Id assistance please.




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Amaranthus_sp_30jan13_DSCN1889.jpg
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Amaranthus_sp_30jan13_VSCN1895.jpg

J.M. Garg

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Feb 15, 2013, 3:26:05 AM2/15/13
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Appears like Amaranthus hybridus as per Singh ji's posting.

surajit koley

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Feb 15, 2013, 2:13:13 PM2/15/13
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Sir,

This plant (also in https://groups.google.com/d/topic/indiantreepix/EnGeFTQ2zd0/discussion) can be Amaranthus hybridus. But which one?
  • in FoP = 2-3 m high; petioles 15 cm, lamina 3-30x1.5-12 cm .......
  • in FoC = 30-50 cm; petiole 1-2.5 cm, leaf-blade/lamina 3-4.5 x 1.5-2.5 cm ....... !!!
Though the scaled leaf in this thread shows obtuse apex, i think, acute leaves can be seen in the first pic.

In the description of A. caudatus L., Flora of British India notes, "I find it very difficult to distinguish some states of this from A. paniculatus......"
F. B. I. equates A. caudatus L. with A. cruentus WIlld., Roxb. .....
In the description of A. cruentus Willd. Flora Indica notes, "The leaves are very remarkable for being concave, like a spoon, either on the upper or under side......"

The leaves of A. paniculatus in F. B. I. is 2-6 by 1-3 in. and petiole equally long.

So, it seems to be A. paniculatus L. of the Bengal Plants & F. B. I. = Amaranthus cruentus L. of FoCAmaranthus hybridus L. of FoP !!!

Regards,

surajit
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