We hope you have enjoyed the SRGC Forum. You can make a Paypal donation to the SRGC by clicking the above button

Author Topic: Primula laurentiana??  (Read 12091 times)

Graham Catlow

  • Hero Member
  • *****
  • Posts: 1184
  • Country: gb
Primula laurentiana??
« on: January 30, 2011, 09:32:13 AM »
Hi
I purchased this primula as P. laurentiana several years ago and have exhibited it both at Glasgow and Aberdeen as that species with no suggestion it may be something else.
However, recently, it has been suggested it is not in fact laurentiana, but frondosa. Is there anyone that can give me a formal identiification please. If it is frondosa can you also please tell me the difference between the two so I don't make the same mistake again.

Bo'ness. Scotland

Martinr

  • Guest
Re: Primula laurentiana??
« Reply #1 on: January 30, 2011, 12:19:01 PM »
According to John Richards 'Primula, 2002 edition' P. frondosa never has meal on the upper surface of the leaves. Does that help?

Graham Catlow

  • Hero Member
  • *****
  • Posts: 1184
  • Country: gb
Re: Primula laurentiana??
« Reply #2 on: January 30, 2011, 05:54:21 PM »
Hi Martin,
Thanks for that.
I will now have to wait until the leaves fully appear this year as I have no idea if the leaves have meal on them or not.
Bo'ness. Scotland

Maggi Young

  • Forum Dogsbody
  • Global Moderator
  • Hero Member
  • *****
  • Posts: 44564
  • Country: scotland
  • "There's often a clue"
    • International Rock Gardener e-magazine
Re: Primula laurentiana??
« Reply #3 on: January 30, 2011, 07:00:40 PM »
From those photos of your lovely clumps of the primula, Graham, I'd say there is meal on both leaf surfaces, lots below and we can see the remnants of the upper farina left down the leaf petioles.
Margaret Young in Aberdeen, North East Scotland Zone 7 -ish!

Editor: International Rock Gardener e-magazine

Graham Catlow

  • Hero Member
  • *****
  • Posts: 1184
  • Country: gb
Re: Primula laurentiana??
« Reply #4 on: January 30, 2011, 07:29:19 PM »
From those photos of your lovely clumps of the primula, Graham, I'd say there is meal on both leaf surfaces, lots below and we can see the remnants of the upper farina left down the leaf petioles.

Thanks Maggi - so that would make it P. laurentiana after all :-\
I know it certainly has lots of meal below just wasn't sure how much if any on the surface.
I hope it is laurentiana or I might have to take it out of my North American trough. ::)
Bo'ness. Scotland

Great Moravian

  • Sr. Member
  • ****
  • Posts: 410
  • Country: 00
Re: Primula laurentiana??
« Reply #5 on: February 01, 2011, 02:32:30 PM »
It is obviously Primula frondosa. John Richards was in error if claiming
Primula frondosa has no farina on upper surface whereas
Primula farinosa has. It is conversely. Correct the information
in the descriptions and key there.
Primula frondosa has farina on the upper surface of leaves.
Primula farinosa hasn't farina on the upper surface of leaves.
Josef N.
gardening in Brno, Czechoslovakia
---
Krieg, Handel und Piraterie, dreieinig sind sie, nicht zu trennen
War, business and piracy are triune, not to separate
Goethe

Graham Catlow

  • Hero Member
  • *****
  • Posts: 1184
  • Country: gb
Re: Primula laurentiana??
« Reply #6 on: February 01, 2011, 06:14:58 PM »
It is obviously Primula frondosa. John Richards was in error if claiming
Primula frondosa has no farina on upper surface whereas
Primula farinosa has. It is conversely. Correct the information
in the descriptions and key there.
Primula frondosa has farina on the upper surface of leaves.
Primula farinosa hasn't farina on the upper surface of leaves.

Hi GM,
What would distinguish Primula laurentiana from Primula frondosa and Primula farinosa?
Why can my plant not be Primula laurentiana?
Bo'ness. Scotland

Great Moravian

  • Sr. Member
  • ****
  • Posts: 410
  • Country: 00
Re: Primula laurentiana??
« Reply #7 on: February 02, 2011, 01:49:25 PM »
In Primula laurentiana the leaves are narrow, white below and green above.
http://www.primulaworld.com/PWweb/gallery/slides/laurentianaAG3.html
http://www.primulaworld.com/PWweb/gallery/slides/laurentianaAG2.html
The garden images in Primula World ascribed to it are Primula frondosa.
I cultivated Primula laurentiana several years ago, it is substantially
different compared to Primula frondosa and unconvincing in garden.
« Last Edit: February 02, 2011, 01:58:27 PM by Great Moravian »
Josef N.
gardening in Brno, Czechoslovakia
---
Krieg, Handel und Piraterie, dreieinig sind sie, nicht zu trennen
War, business and piracy are triune, not to separate
Goethe

Graham Catlow

  • Hero Member
  • *****
  • Posts: 1184
  • Country: gb
Re: Primula laurentiana??
« Reply #8 on: February 02, 2011, 06:19:33 PM »
In Primula laurentiana the leaves are narrow, white below and green above.
http://www.primulaworld.com/PWweb/gallery/slides/laurentianaAG3.html
http://www.primulaworld.com/PWweb/gallery/slides/laurentianaAG2.html
The garden images in Primula World ascribed to it are Primula frondosa.
I cultivated Primula laurentiana several years ago, it is substantially
different compared to Primula frondosa and unconvincing in garden.

Thanks GM,
That is more clear now. These leaves are not narrow, so frondosa it is.

Now to seek out laurentiana

Kevock list both so perhaps they will let me visit and examine the differences.
Bo'ness. Scotland

Diane Clement

  • the people's Pepys
  • Hero Member
  • *****
  • Posts: 2162
  • Country: gb
  • gone to seed
    • AGS Midland Garden Blog
Re: Primula laurentiana??
« Reply #9 on: February 02, 2011, 08:18:27 PM »
In Primula laurentiana the leaves are narrow, white below and green above.
... The garden images in Primula World ascribed to it are Primula frondosa.  

The garden images of P laurentiana on Primula world are taken by David Rankin of Kevock.  I'll be interested to hear his opinion of the species when you do meet up and compare plants.
« Last Edit: February 02, 2011, 08:20:51 PM by Diane Clement »
Diane Clement, Wolverhampton, UK
Director, AGS Seed Exchange

Graham Catlow

  • Hero Member
  • *****
  • Posts: 1184
  • Country: gb
Re: Primula laurentiana??
« Reply #10 on: February 02, 2011, 09:10:33 PM »
In Primula laurentiana the leaves are narrow, white below and green above.
... The garden images in Primula World ascribed to it are Primula frondosa.  

The garden images of P laurentiana on Primula world are taken by David Rankin of Kevock.  I'll be interested to hear his opinion of the species when you do meet up and compare plants.

Yes, I had noticed that also Diane.
I have met David and Stella on a couple of occassions so hope they will be obliging.
Bo'ness. Scotland

Diane Clement

  • the people's Pepys
  • Hero Member
  • *****
  • Posts: 2162
  • Country: gb
  • gone to seed
    • AGS Midland Garden Blog
Re: Primula laurentiana??
« Reply #11 on: February 02, 2011, 09:11:12 PM »
Yes, I had noticed that also Diane.
I have met David and Stella on a couple of occassions so hope they will be obliging. 

I'm sure they will, they're great folks
Diane Clement, Wolverhampton, UK
Director, AGS Seed Exchange

Great Moravian

  • Sr. Member
  • ****
  • Posts: 410
  • Country: 00
Re: Primula laurentiana??
« Reply #12 on: February 03, 2011, 01:14:33 PM »
I would prefer seeds collected in Canada. You should contact
http://www.gardensnorth.com/
if still available.
Josef N.
gardening in Brno, Czechoslovakia
---
Krieg, Handel und Piraterie, dreieinig sind sie, nicht zu trennen
War, business and piracy are triune, not to separate
Goethe

Tony Willis

  • Wandering Star
  • Hero Member
  • *****
  • Posts: 3205
  • Country: england
Re: Primula laurentiana??
« Reply #13 on: February 03, 2011, 03:28:49 PM »
Graham

there is a picture of it in the wild on the Nova Scotia Wild Flora Society website

http://www.nswildflora.ca/species/Primulaceae/PrimLaur/species.html
Chorley, Lancashire zone 8b

johnw

  • Hero Member
  • *****
  • Posts: 6695
  • Country: 00
  • rhodo-galantho-etc-phile
Re: Primula laurentiana??
« Reply #14 on: February 03, 2011, 03:35:47 PM »
Graham
there is a picture of it in the wild on the Nova Scotia Wild Flora Society website
http://www.nswildflora.ca/species/Primulaceae/PrimLaur/species.html

Graham  - It is in this part of the world but I don't believe we are allowed to collect seed anymore as it is protected and imperiled as the article states.  If you pm me in a month or so I can check with a friend (away at the moment) who may have some seed from plants in the garden.

johnw
John in coastal Nova Scotia

 


Scottish Rock Garden Club is a Charity registered with Scottish Charity Regulator (OSCR): SC000942
SimplePortal 2.3.5 © 2008-2012, SimplePortal