Eriogonum pauciflorum: Pryor mountains, Montana

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Brian_W
Title: Guest
Joined: 2012-04-28
Eriogonum pauciflorum: Pryor mountains, Montana

Greetings,

Eriogonum pauciflorum is widespread throughout the central Great Plains. The typical form is a loose sprawling mat with small clusters of cream colored flowers. In the Pryor mountains of southern Montana, there is a unique form that is much more compact in growth. For a long time, this form was considered to be Eriogonum mancum do to its resemblance to that species. I've donated seed from this unique form to the Eriogonum society http://www.eriogonum.org/.

As a comparison in growth, here is the dense silver mat from the Pryors:

http://i1072.photobucket.com/albums/w362/townsendia/EpauciflorumPryors_z...

A photo of the typical form, here growing on a sandstone ledge:

http://i1072.photobucket.com/albums/w362/townsendia/Epauciflorum_zpsb9bc...

There is a slight variation in flower color. Pink and cream:

raspberry and white:

As the flowers age, they turn a nice rusty red:

http://i1072.photobucket.com/albums/w362/townsendia/Epauciflorumpryors2_...

Brian

Tim Ingram
Title: Member
Joined: 2011-04-27

I meant to reply to these glorious photos of Eriogonum pauciflorum earlier. Is there anything else really like an eriogonum? The range of flower colours is extraordinary and that white foliage, well very special. I haven't yet joined the Eriogonum Society...

Dr. Timothy John Ingram
Faversham, Kent, UK
I garden in a relatively hot and dry region (for the UK!), with an annual rainfall of around 25", winter lows of -10°C and summer highs of 30°C.
 

Mark McD
Title: Moderator
Joined: 2009-12-14

My sentiments exactly Tim, those color forms of Eriogonum are all beautiful, love when they age to russet colors.  Clearly I must also join the Eriogonum Society.  Brian, that compact form is quite special, thanks for showing us the variation.  Are the three flowering forms shown all representing the Pryor mountain forms?  Seems that the Pryor Mts hold many special plants, judging from the Townsendia spathulata forms I've seen in forums and the web.

Brian, is the middle pink one you show us, the same photo posted previously as E. mancum at the topic in the link below?  I think it is.  You can use the Modify or Edit buttons on your own messages (buttons will be on the right hand side of your message), to regain edit-access to your messages, to update the name if you'd like. Also, it seems one of your images on photobucket went missing.
http://nargs.org/smf/index.php?topic=1078.msg18196#msg18196

Mark McDonough
Massachusetts, USA, near the New Hampshire border USDA Zone 5
antennaria at aol.com
 

Brian_W
Title: Guest
Joined: 2012-04-28

Greetings,

Yes, all three photos of the flowering plants are from the Pryor mountains.  The photo from the link that I labeled as E. mancum is actually E. pauciflorum.  I posted that photo before the new flora of Montana was published.  I will update the old post.

The Pryor mountains are a very unique place with a wide assortment of unusual plants.  In the past 10 years there has been a lot of botanical work in the area, but it's still very rare for wild flower enthusiasts to visit it. 

Mark McD
Title: Moderator
Joined: 2009-12-14

Brian_W wrote:

The Pryor mountains are a very unique place with a wide assortment of unusual plants.  In the past 10 years there has been a lot of botanical work in the area, but it's still very rare for wild flower enthusiasts to visit it. 

Is the Pryor Mountains area very difficult to access?  I found this link which has lots of information on the area, including the plants of the area.  Would like to visit some day.
http://www.pryormountains.org/welcome-to-the-pryors/maps/

Mark McDonough
Massachusetts, USA, near the New Hampshire border USDA Zone 5
antennaria at aol.com
 

RickR
Title: Moderator
Joined: 2009-09-21

Awesome, educational, interesting and beautiful, as are all you photos you share here. :o

  Thanks so much, Brian!

Rick Rodich    zone 4a.    Annual precipitation ~24 inches
near Minneapolis, Minnesota, USA

Mark McD
Title: Moderator
Joined: 2009-12-14

RickR wrote:

Awesome, educational, interesting and beautiful, as are all you photos you share here. :o

Thanks so much, Brian!

Allow me to second that motion, you have posted some of the more outstanding plant and scenery photos I've seen, the Kelseya photos are totally intoxicating, thank you for posting them.  Love the orange and yellow lichens too!

Mark McDonough
Massachusetts, USA, near the New Hampshire border USDA Zone 5
antennaria at aol.com
 

Weiser
Title: Member
Joined: 2009-12-04

Brian the dense form is a very nice silver. I look forward to growing it.
I am led to understand that E. pauciflorum is commonly found growing on clayed slopes and knolls, is that consistant with your experiences in the Pryor Mountains?

http://mtnhp.org/ecology/Guide_Report.asp?elcode=CEGL005270
http://plants.usda.gov/java/profile?symbol=ERPAP6
http://www.em.ca/garden/native/nat_Eriogonum_pauciflorum.html
http://nargs.org/nargswiki/tiki-browse_image.php?imageId=4374

From the High Desert Steppe
of the Great Basin and the Eastern
Escarpment of the Sierra Nevada Range
Located in Reno/Sparks,NV  zone 6-7
http://www.flickr.com/photos/sierrarainshadow/
John P Weiser

cohan
cohan's picture
Title: Guest
Joined: 2011-02-03

Looks like a very nice plant to run across in any form, very nice flower colours too!

west central alberta, canada; just under 1000m; record temps:min -45C/-49F;max 34C/93F; http://picasaweb.google.ca/cactuscactus  http://urbanehillbillycanada.blogspot.com/

Brian_W
Title: Guest
Joined: 2012-04-28

Thanks for the comments!

Mark,

Access to the Pryors isn't difficult.  However, the area is remote and completely undeveloped.  Also, some of the roads that lead up the canyons can be very rough (that's an understatement).  There is a growing interest in the Pryors, and along with it, a growing concern to protect the fragile habitats.  The Pryors are most famous for their wild horses, and the bulk of the people who visit go for that reason.  Despite the unique diversity of plants species, I still think it is rare for people to visit with that in mind.  On that note, I've been in communication with Panayoti and he has expressed an interest in doing a wildflower tour of the Pryors.  We will see what happens  ;)

John,

In eastern Montana, E. pauciflorum is associated with heavy clay soils.  In the Pryors (south-central Montana), they grow in the shallow rocky soils of limestone outcrops.  The typical form is usually associated with soils derived from weathered sandstone.  Any clay soils in this area are usually dominated by Eriogonum brevicaule var. canum.  These plants have a growth form similar to E. pauciflorum and were once classified as a variety of that species.

Here are some view of the Pryors:

The red desert of the south Pryors.  This area receives less than 5 inches of precipitation per year yet hosts a remarkable array of plant species.

http://i1072.photobucket.com/albums/w362/townsendia/southpryors_zps4678f...

http://i1072.photobucket.com/albums/w362/townsendia/southpryors2_zps183f...

The limestone outcrops of the west Pryors.  Eriogonum pauciflorum grows here along with an abundance of cushion plants.

http://i1072.photobucket.com/albums/w362/townsendia/westpryors2_zps03685...

http://i1072.photobucket.com/albums/w362/townsendia/westpryors_zps293191...

The high plateau of the east Pryors, overlooking BigHorn Canyon.

http://i1072.photobucket.com/albums/w362/townsendia/EastPryors_zps843df2...

http://i1072.photobucket.com/albums/w362/townsendia/EastPryors2_zpsfa489...

Some youngsters  :)

http://i1072.photobucket.com/albums/w362/townsendia/wildhorses_zps5e5c54...

Lori S.
Title: Moderator
Joined: 2009-10-27

Looks like a great place.  Is there any public land?

Oops, guess I should have looked more closely at the map... Looks like there is BLM land and a recreational area.

Lori
Calgary, Alberta, Canada - Zone 3
-30 C to +30 C (rarely!); elevation ~1130m; annual precipitation ~40 cm

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