Wildflowers of the United States

Home Journal Family Index - All States Photo Albums News About Privacy

Pineapple Weed, Wild Chamomile, Rayless Chamomile, Disc Mayweed - Matricaria discoidea


Family: Asteraceae Ė Aster family Genus Common Name: Mayweed Native Status: Introduced
Matricaria discoidea - Pineapple Weed, Wild Chamomile, Rayless Chamomile, Disc Mayweed. Donít be fooled by the USDA Plants Database map to the right which shows Matricaria discoidea as an introduced plant throughout its range the United States and Canada. Thatís because the USDA uses a single classification for the lower 48 states, and in true democratic fashion, the majority has won. This plant is native to the northwestern states (as well as parts of Asia) but after the opening of the west (and discovery of the species) by the Lewis and Clark expedition, has spread outward from those states, and is now found in almost every state in the United States as well as much of Canada.

The plant gets its Pineapple Weed common name comes from the strong scent, when crushed reminiscent of Pineapple. It is reported to be an acceptable plant for making chamomile tea, although another species in the genus, Matricaria chamomilla, is the most commonly used plant for chamomile tea.

Found in:
AK, AR, AZ, CA, CO, CT, DE, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, UT, VA, VT, WA, WI, WV, WY

Distribution of Matricaria discoidea in the United States and Canada:
USDA Plants Distribution Map temporarily unavailable.
Blue=Native; Grey=Introduced

Map from USDA Plants Database:
USDA, NRCS. 2009. The PLANTS Database (http://plants.usda.gov, 30 Sep 2014). National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

Search Our Database of Species
Enter any portion of the Scientific
or Common Name (or both)

Scientific name:
Common name:

Example: Enter "lob" in the common name field and you'll get all our species that have "lobelia" in the common name, as well as "sharp-lobed hepatica".

Do a general Google search of the entire site:




Follow on Twitter
Follow USWildflowers on Twitter


Site: Hellís Canyon Park, Adams County, ID Date: 2012-May-28Photographer: Gerald C. Williamson
Nikon D7000
Matricaria discoidea grows up to 18 or 20 inches tall, although it is more frequently a foot tall or shorter. The blossom has disk flowers only (as implied by the species epithet) and they are a somewhat dull yellow. As shown by this photo, it is a plant of roadsides and waste areas.
Matricaria discoidea

Site: Hellís Canyon Park, Adams County, ID Date: 2012-May-28Photographer: Gerald C Williamson
Nikon D7000
The leaves of Pineapple Weed are alternate, pinnately lobed, and quite linear.
Click on the photo for a larger image
Matricaria discoidea

References used for identification and information:

Looking for Wildflowers for a specific state? Check here:



All content except USDA Plants Database map Copyright Gerald C. Williamson 2014
Photographs Copyrighted by the named photographer