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Dipsacus sylvestris Huds. (syn: Dipsacus arcimusci Lojac.; Dipsacus carminatorius Salisb.; Dipsacus connatofolius Gilib.; Dipsacus fullonum L.; Dipsacus fullonum var. sylvestris (Huds.) Schmalh.; Dipsacus meyeri Chab.; Dipsacus palustris Salisb.) as per Catalogue of Life;
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Wild Plant for ID : New York : 07DEC17 : AK-04 : 3 posts by 2 authors. Attachments (6) Plant seen at a stop on the Thruway in New York. Pictures taken on 30th of June.
On searching, it looks like Dipsacus Species.
Experts kindly help.
Dipsacus fullonum I hope
Dipsacus fullonum from Canada-GS07032020-3 : 2 posts by 2 authors. Attachments (2)
Dipsacus fullonum L. Common names: Wild teasel, Fuller’s teasel
Tall annual herb introduced in Canada and USA, with prickly stems and leaves, oval head surrounded by long spiny bracts, with lavender to pink flowers.
Clicked from Kariya Japanese Park, Mississauga, Canada, September 2019
.     Dipsacus fullonum from Miississauga, Canada-24072021-1: Dipsacus fullonum Linn. wild teasel or fuller’s teasel Tall herb with ovoid flower heads surrounded by much longer linear involucre bracts. Clicked from Mississauga, Canada, 21-8-2019  
Location: Tidworth, London
Date: December 2018
Elevation: 109 m.
Habit : Wild i was going to ask some questions, but saw its not going to yield any answers since it is sent by a friend. we will never know its height,
its basal rosette of leaves’ pictures etc to make a ready diagnosis. given all that handicap. i still venture to say.
this is a dry thistle head. hairy / prickly stem seems to have angles, perhaps four of most likely a common Teasel we see in american midwest,
a weed imported from Europe. favorite of dry flower arrangements for fall decorations in home. Botanical name may be If WE had all the info:
Dipsacus fullonum.
THIS COULD ALSO BE Dipsacus laciniatus, but we will never know for that distinction we need to see the leaves.
References:
this site also has very apt pictures to id it in field
Weed guide from American Midwest : http://www.oardc.ohio-state.edu/weedguide/single_weed.php?id=98
Do you think your friends could be a liitle more enthusistic in taking pictures please?
oh i forgot to type above…. the final diagnosis should be: Dried flowering head of Common teasel, Dipsacus sp. not otherwise classified. There are so many dipsacus which look similar in dry state. However, could it be Dipsacus fullonum ?
NO. After all these years of my trying to teach that in cases like this. its not prudent to try and nail down a species level diagnosis. it is what it is in the picture: Dried flowering head of Common teasel, Dipsacus sp. not otherwise classified. Dipsacus fullonum This is how it is differentiated from closely similar cultivated species D. sativus
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