Matricaria discoidea

Rounded Chamomille at Gordon, ACT

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Identification history

Matricaria discoidea	17 Dec 2015	MichaelBedingfield
chamomilla suaveolens	16 Dec 2015	galah681
Unidentified	13 Dec 2015	BettyDonWood
Unidentified	13 Dec 2015	BettyDonWood

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Significant sighting

MichaelBedingfield noted:

17 Dec 2015

According to David Albrecht from the Australian National Herbarium (CSIRO), this species has not previously been recorded for the ACT.

User's notes

Sighting verified by David Albrecht from the CSIRO and Betty Woods.

13 comments

BettyDonWood wrote:

14 Dec 2015

I am pretty sure this is a teasel. However, the leaves in no way fit the description of Dipsacus fullonum in PlantNET. It needs to go to someone eg at the Australian National Herbarium, who has access to the European and American Floras.

BettyDonWood wrote:

14 Dec 2015

The leaves of Dipsacus laciniatus fit the photo better. However, I am basing this only on photos. I have not been able to find a decent description.

MichaelBedingfield wrote:

14 Dec 2015

Hi Betty. I had a look at images of both species of Dipsacus that you've mentioned, and neither of them have leaves that are similar. I thought it was a short lived annual daisy. I will return to the scene and see if I can find any remains of the plants for ID. Otherwise, I will have to wait until next year to get a specimen for ANBG to look at.

BettyDonWood wrote:

15 Dec 2015

The leaves are very daisy-like. However, both Don and I separately took one look at the flower head and said Dipsacus. I don't know any daisy that looks anything like this.

MichaelBedingfield wrote:

15 Dec 2015

Hi Betty. I revisited the site yesterday and found a small but withered specimen of the plant, and I've added photos of it. The plant was only 8cm long including the roots. There is a small flower present, and the remains of spent flowers. There is no evidence of the prickly seed-head that Dipsacus plants have. What do you think?

BettyDonWood wrote:

16 Dec 2015

I have no idea what it is, given the size it is. It just goes to show how one can be completely mistaken when looking at a photo with no idea of the plant size.

MichaelBedingfield wrote:

16 Dec 2015

Fair enough. The additional set of photos was of a particularly small plant. But if you look at the second photo, which shows the background, including grass clippings and some weeds, it gives you a reasonable idea that original plant was quite small. I might have a go next year at getting a decent specimen for ANBG to look at. Thanks for trying.

Mike wrote:

16 Dec 2015

It looks like Matricaria matricarioides (rounded chamomile) see Richardson & Richardson p.179 also known as M. discoidea. The ACT Census has Artemisia recutita but I haven't found any photos.

MichaelBedingfield wrote:

16 Dec 2015

Thanks Mike. That is an excellent suggestion. The photos on the internet look very close. Also PlantNet has Matricaria matricarioides as naturalised on the Southern Tablelands.

galah681 wrote:

17 Dec 2015

I photographed a plant that looked very like this when I was in Cornwall in October. I think it was Chamomilla suaveolens - Pineapple mayweed. It grows in wasteland and originates from NE Asia

Mike wrote:

17 Dec 2015

Synonyms. According to one photo on Google Search - Disc Mayweed, Pineapple Weed: Matricaria discoidea (Synonyms: Chamomilla suaveolens, Matricaria matricarioides). Atlas of Living Australia gives accepted name Matricaria chamomilla.

MichaelBedingfield wrote:

17 Dec 2015

Thanks Galah and Mike. When I set up the suggested name I used the PlantNET definition, which has Matricaria matricarioides as the accepted name, and Chamomilla suaveolens as a synonym.

MichaelBedingfield wrote:

17 Dec 2015

Betty as told me that the Atlas is more reliable than PlantNET, so I've changed the name to Matricaria chamomilla.

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