Calling all writers, especially those who wax poetic! If you have a way with words, here's your chance to put pen to paper and try your hand at writing an award-winning piece for us. Find all the details on our contest page.

SOLVED: Polygonaceae: Polygonum bistorta or hydropiper?

faicchio, Italy

Polygonum bistorta or hydropiper?
Without the inflorescence I find the plant difficult to determine the correct ID.

Thumbnail by towler Thumbnail by towler Thumbnail by towler Thumbnail by towler Thumbnail by towler
Churchill, Victoria, Australia(Zone 10a)

The genus of both those species is now persicaria. As you say it is hard to tell without an inflorescence, a close up of the ochrea, the stem-clasping sheath at the base of each leaf would probably help. They are a distinctive feature of all Persicarias. To me your pictures look much more like Persicaria hydropiper than P. bistorta.

Ken

faicchio, Italy

Thank you Ken, Sometimes, as you probably know, one comes across a plant in the wrong season, making an ID exceedingly difficult at times. Thanks again

Post a Reply to this Thread

Please or sign up to post.
BACK TO TOP