[Members of the Sunflower Family with Button-like Heads in the Cascade Mountains of Oregon and Washington]

Disc Mayweed, Pineapple Weed

Matricaria discoidea

Synonyms: Camomilla discoidea, Chamomilla suaveolens, Matricaria matricarioides , Santolina suaveolens

Disc Mayweed, Pineapple Weed: Matricaria discoidea (Synonyms: Camomilla discoidea, Chamomilla suaveolens, Matricaria matricarioides , Santolina suaveolens)

The photos above and below show pineapple weed as seen along Kreps Lane in Conboy National Wildlife Refuge........July 2, 2006. Plants have a pleasant chamomile smell to them, with perhaps a fragrance of pineapple mixed in.

Disc Mayweed, Pineapple Weed: Matricaria discoidea (Synonyms: Camomilla discoidea, Chamomilla suaveolens, Matricaria matricarioides , Santolina suaveolens)

The photo above shows pineapple weed as seen on the gravel shoulder along Laurel Road in Conboy National Wildlife Refuge.........June 21, 2008.


Stem leaf of Disc Mayweed, Pineapple Weed: Matricaria discoidea (Synonyms: Camomilla discoidea, Chamomilla suaveolens, Matricaria matricarioides , Santolina suaveolens)

The photo above shows a close-up of the pinnately divided stem leaf of pineapple weed as seen on the gravel shoulder along Laurel Road in Conboy National Wildlife Refuge..........June 21, 2008.


Disc Mayweed, Pineapple Weed: Matricaria discoidea (Synonyms: Camomilla discoidea, Chamomilla suaveolens, Matricaria matricarioides , Santolina suaveolens)

The photo above shows a close-up of the upper stem leaves and inflorescence of pineapple weed as seen on the gravel shoulder along Laurel Road in Conboy National Wildlife Refuge.........June 21, 2008.


Disc Mayweed, Pineapple Weed: Matricaria discoidea (Synonyms: Camomilla discoidea, Chamomilla suaveolens, Matricaria matricarioides , Santolina suaveolens)

The photo above shows the form of pineapple weed as seen on the gravel shoulder along Laurel Road in Conboy National Wildlife Refuge.........June 21, 2008.

Paul Slichter