Synonym:  Matricaria matricarioides  auct. non  (Less.)  Porter

              

abc ..
Plants of fields, roadsides, waste places, vacant lots.  Flowers June to July.  From northwestern North America, introduced to eastern states.

Annual.  Tap-rooted.  Stems are glabrous, often branching from near base.  Typical height is 4 to 12 inches.  Pineapple-scented.

Inflorescences are open, flat- to round-topped, with flower heads borne singly or a few at ends of branches. 

Flower heads are discoidRay florets are lacking.  Disc florets are green-yellow, bisexual and fertile.  Receptacles are conicalInvolucres are hemispheric.

Basal leaves are usually deciduous by flowering.  Stem leaves are alternate, oblanceolate or obovate in outline, 2-3 times dissected into linear lobes.

.

.

This is a distinctive species.  However, it is closely related to a group of species that includes Anthemis (chamomile), Tanacetum (tansy) and Achillea (Yarrow).  (Note the finely dissected, alternately arranged leaves.)

.

.

 


Images and text copyright  botphoto.com  and Arieh Tal, 1990 to 2016.  All rights reserved.  ( Terms of use )
.