Pankaj ji
The former complex genus has now been split into at least four major genera.
Here is a simpler key:
Flowers in axillary clusters (stamens inflated at base, inner larger;
nectaries absent or inconspicuous)....................Polygonum
Flowers in Panicles, Spikes or Heads (All stamens equal, not inflated at
base; nectaries present and conspicuous)
Flowers in clusters forming panicle or flat-topped
corymb.................................................................................Koenigia
Flowers in well-defined spikes or heads
Plants rhizomatic perennials with prominent basal leaves; styles 3,
free and elongate......................................Bistorta
Plants annual, rarely perennials with rooting branches; leaves
evenly distributed; style 1, bifid or trifid................Persicaria
--
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 Wed, Aug 18, 2010 at 10:53 AM, Pankaj Kumar <[email protected]>wrote:
> Just wanted to ask, how do you differentiate Persicaria from Polygonum?
> Pankaj
>
> On Wed, Aug 18, 2010 at 2:37 AM, tanay bose <[email protected]> wrote:
> > Nice to see the close up the flowers
> > Thanks Sir Ji
> > Tanay
> >
> > On Tue, Aug 17, 2010 at 12:58 PM, Gurcharan Singh <[email protected]>
> > wrote:
> >>
> >> Persicaria maculosa Gray (syn: Polygonum persicaria L.) from Kashmir,
> >> growing in wet places. Photographed from Harwan on June 17, 2010.
> >>
> >> Common names: Lady's-thumb, Redshank, Spotted lady's-thumb , Smart weed
> >> French: Renouée persicaire
> >> Used as medicinal as laxative, cardiac stimulant, and in colds and
> fevers.
> >> Infusion useful as a gargle in inflammation of pharynx. Herb yields an
> >> essential oil.
> >>
> >> --
> >> 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/
> >>
> >
> >
> >
> > --
> > Tanay Bose
> > Research Assistant & Teaching Assistant
> > Department of Botany
> > University of British Columbia
> > 3529-6270 University Blvd.
> > Vancouver, B.C. V6T 1Z4 (Canada)
> > Phone: 778-323-4036
> >
> >
>
