Panax trifolius vs Aralia nudicaulis

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Barstow
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Title: Member
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 trifoliushttp://www.fs.fed.us/wildflowers/plant-of-the-week/panax_trifolius.shtmlhttp://www.ct-botanical-society.org/galleries/panaxtrif.html

Aralia nudicaulis http://www.ct-botanical-society.org/galleries/aralianudi.htmlhttp://calphotos.berkeley.edu/cgi/img_query?enlarge=0000+0000+0506+1174http://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
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Title: Member
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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