Hi Mohan Ji.
Yo can also take a look at link below from eFlora of China
for the identification key of Datura for further references.
http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=109368
Tanay

On Sat, Oct 15, 2011 at 8:35 PM, Gurcharan Singh <singh...@gmail.com> wrote:

> Mohan ji
>
> In both D. stramonium and D. metel the plants are glabrous, hairy in D.
> inoxia
>
> The deciding difference between D. metel and D. stramonium is that mature
> fruit of D. metel is drooping, covered with short blunt tubercles barely
> exceeding 3 mm; in  D. stramonium mature fruit is erect covered with long
> spines up to 5 mm long.
>
> In addition the following may help. Plants of D. metel are generally taller
> less branched and erect often reaching 1.5 m and tend to have purplish stem,
> in D. stramonium plants are shorter, more branched and spreading, stems not
> purplish.
>
> The leaves of D. stramonium are generally parted, whereas they are not
> parted in D. metel
>
> --
> Dr. Gurcharan Singh
> Retired  Associate Professor
> SGTB Khalsa College, University of Delhi, Delhi-110007
> Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
> Phone: 011-25518297  Mob: 9810359089
> http://people.du.ac.in/~singhg45/
>
>
> On Sun, Oct 16, 2011 at 6:53 AM, Mohan V. Chunkath <
> mohan.chunk...@gmail.com> wrote:
>
>> How do you distinguish between Datura metle and Datura Stramonium? Thanks.
>> Regards,
>> Mohan
>>
>
>
>
>
>


-- 
*Tanay Bose*
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