Mazus pumilus

mazus, japanese mazus
Family

Scrophulariaceae

Leaf Arrangement

alternate, basal (rosulate)

Leaf Attachment

petiolate

Leaf Margin

serrate

Leaf Type

simple

Leaf Shape

obovate

Growth Form

forb

Flower Color

blue, purple

Flower Month

March - October

Height (meters)

0.0 - 0.2

Milky Sap

No

Armed/Unarmed

Unarmed

Origin

introduced

Lifespan

annual

Growing Season

Warm season


Wetland Class

FAC

Prairie Coefficient of Conservatism

-1

Field Characters

There are two species: Mazus pumilus (japonicus) is erect, hairy, not stoloniferous, and has a corolla 1 cm or less long, while Mazus miguelii is stoloniferous, hairless, and has a corolla 1.5 cm or more long. Look alike: Mecardonia acuminata- opposite leaves

Natural History

A naturalized weed of disturbed ground.

Habitat

Lawns, cracks in sidewalks, and wet bottomlands.