Panax trifolius vs Aralia nudicaulis

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Barstow
Barstow's picture
Title: Guest
Joined: 2010-08-27
Panax trifolius vs Aralia nudicaulis

I received this one (AGS seed) as Panax trifolius, but it's beginning to look very much like Aralia nudicaulis which I have elsewhere (dark leaved plant in the foreground). It hasn't flowered. The picture is from last year and this year it's begun spreading vegetatively quite vigorously. Can the leaves easily be told apart?

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

Hi Stephen, yes it looks like Aralia nudicaulis to me too.  Panax trifolius is a very small plant (3-8"), and the Aralia can grow 12-18" tall, often with 5 leaflets instead of just three.

Here's some good links for comparison:

Panax trifolius
http://www.fs.fed.us/wildflowers/plant-of-the-week/panax_trifolius.shtml
http://www.ct-botanical-society.org/galleries/panaxtrif.html

Aralia nudicaulis
http://www.ct-botanical-society.org/galleries/aralianudi.html
http://calphotos.berkeley.edu/cgi/img_query?enlarge=0000+0000+0506+1174
http://wisplants.uwsp.edu/scripts/detail.asp?SpCode=ARANUD

See photo #5 with Panax trifolius on a previous topic of mine:
http://nargs.org/smf/index.php?topic=108.msg1855#msg1855

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

RickR
Title: Moderator
Joined: 2009-09-21

It is also my understanding that Panax have palmately arranged leaflets; Aralia have pinnately arranged leaflets.

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

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

RickR wrote:

It is also my understanding that Panax have palmately arranged leaflets; Aralia have pinnately arranged leaflets.

Good disgnostic point Rick, you can see the palmate leaf arragment of the Panax clearly in the Connecticut Botantical Society link, and the 3-5 pinnate leaf arrangement of the Aralia in the Wisconsin Plants link.

palmate vs. pinnate:
http://www.uwgb.edu/biodiversity/herbarium/trees/palmate_pinnate01_web40...

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

Barstow
Barstow's picture
Title: Guest
Joined: 2010-08-27

Thanks lads!! Not having much success with Panax! I planted seed propagated Panax quinquefolius; P. ginseng and what I thought was P. trifolius and only trifolius made it through the winter here... :'(

Stephen Barstow
Malvik, Norway
63.4N
Age: Lower end of the 20-25,000 day range

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