Friday, April 30, 2021

Hybrid Avens - Geum. x intermedium (eg: Geum rivale x geum urbanum = Water Avens and Wood Avens)

 



Geum intermediate (G. rivale x G urbanum)
or the hybrid of Water Avens x Wood Avens
Photo: Slape Lane on 13th May 2021


This beauty is found on Slape Lane, just after the area "Bullfinch plantation" which is marked on the top bar of a fence. 

There is heavy populations of both Water (40 plus) and Wood Avens present in the nearby vicinity and you can see the Avens intermingled with the leaves of anemone to either side of the banking. 

The hybrid obviously is rarer and harder to find, but it's there and you first become aware of it's precence by its beautiful yellow petals.  The hybrid takes on more of the look of the water avens in profile, however the petals take on the colour of the Wood Avens eg: yellow.  Also if you note the petals shown in this examples also bave petal edge shape resembling the edges of the Wood Avens.  See differences from the following photos (taken on 30th April 2021)


This photo above shows the two parent species and the hybrid eg: Top photo left is the Water Avens (Geum rivale) and the Top photo right is showing the underside. The middle left photo shows the Wood Avens with the middle right showing it's underside. And finally at the bottom left you see the hybrid and to the bottom right the underside. 


This photo shows both hybrid intermediate on the left and the water Avens to the right, you can see they do have some similar build with the sepals etc, but the petals are totally different to one another, first in colour and secondly in the shape.  With the hybrid you get the yellow petal and the more rounded edge at the bottom of the petal. (photo taken on Slape Lane, Burton In Kendal on 30th April 2021)

Here below is a new photo taken on 7th May 2021 from the near Rowley Copse population which lies about 1/2 mile distant from Population 1 and it lies very much within shade of a banking with canopied trees. I have noticed here they are later in coming through by up to one week. The petals here definately tend to be on a lighter side of things and may well be an intermediate, here below now are some photos of Population 2. to be cont



This photo shows the water avens. (photo taken on Slape Lane, Burton In Kendal on 30th April 2021)


This photo shows the water avens (inside). (photo taken on Slape Lane, Burton In Kendal on 30th April 2021)


This photo shows the water avens. (photo taken on Slape Lane, Burton In Kendal on 30th April 2021)



This photo shows the rarer hybrid avens. (photo taken on Slape Lane, Burton In Kendal on 30th April 2021)


This photo shows the rarer hybrid avens with other buds awaiting opening. (photo taken on Slape Lane, Burton In Kendal on 30th April 2021)



This photo shows the rarer hybrid avens from the inside/underside. (photo taken on Slape Lane, Burton In Kendal on 30th April 2021)



This photo above shows both Avens species or at least Wood Avens and many intermediary of the hybrids.


Top: Water Avens
Middle: Wood Avens
Bottom: Hybrid intermediate (G. rivale and g.urbanum)