130209 GI Is this Ipomea or Argeyria

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Padmanabhan Geetha

Feb 12, 2009, 8:51:41 PM2/12/09
to indiantreepix Indian
Dear Friends
Photographed at the campus of Isha yoga centre, foothills of Velliangiri Hills, Coimbatore this month.Growing wild.Request id. It has palmately compound leaves.Flowers deeply violet

I has posted this question earlier? Is there an easy way of distinguishing Ipomea from Argeyria?

Thanks and best wishes
Ipomea violet coloured.jpg

Dinesh Valke

Feb 12, 2009, 11:55:54 PM2/12/09
to Padmanabhan Geetha, indiantreepix Indian
... this looks to me the most common morning glory Ipomoea cairica, commonly known as railway creeper or ivy-leaved morning glory and lesser known names are: Cairo morning glory, messina creeper.
Your query: Is there an easy way of distinguishing Ipomea from Argeyria?
My own perception: Argeyrias have stouter base, shorter throats, thicker (hairy) sepals ... all this that I have observed in one species A. nervosa !! .. so may not hold true for all Argyreias
For laymen like me, a funny (and practical point of view) is that we must be fortunate enough of getting to see as many species regularly.

Padmanabhan Geetha

Feb 13, 2009, 12:14:40 AM2/13/09
to Dinesh Valke, indiantreepix Indian
Thank you Dinesh ji.

Copying another response i received:

kaysat tiwari

commonly known as railway creeper only because at one time it was seen growing on most of the railway stations easy to grow from cuttings.  I.palmata

So this railway creeper - is it I palmata or I cairica ?

Thank you, yes, the only way of getting to be clear is by seeing more and more of these species.
thank you

Dinesh Valke

Feb 13, 2009, 12:20:10 AM2/13/09
to Padmanabhan Geetha, indiantreepix Indian
... NPGS / GRIN at http://www.ars-grin.gov/cgi-bin/npgs/html/taxon.pl?20201 states I. palmata as synonym of I. cairica.
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