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Nugent, Louis R
Parthenium incanum
Parthenium incanum Kunth
Mariola
Asteraceae (Aster Family)
Synonym(s):
USDA Symbol: PAIN2
USDA Native Status: L48 (N)
The deciduous shrub, mariola, is intricately branched from the base and reaches a height of 1-3 ft. Its branches and lobed leaves are cottony pubescent, lending and overall grayish-white appearance. Flat-topped flower heads, made up of many small, white flowers, terminate the main branches.
Plant Characteristics
Duration: PerennialHabit: Shrub
Leaf Retention: Deciduous
Size Notes: Up to about 3 feet tall.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.
Bloom Information
Bloom Color: WhiteBloom Time: Jul , Aug , Sep , Oct
Bloom Notes: Flowers resemble small cauliflowers.
Distribution
USA: AZ , NM , NV , TX , UTNative Distribution: AZ & s.w. UT, to Trans-Pecos deserts & Edwards Plateau, s. to n. Mex.
Native Habitat: Desert grasslands; dry, gravelly slopes & plains
Growing Conditions
Light Requirement: SunSoil Moisture: Dry
Soil Description: Dry, caliche soils.
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:Tohono Chul Park, Inc. - Tucson, AZ
Bibliography
Bibref 995 - Native Landscaping from El Paso to L.A. (2000) Wasowski, S. and A. WasowskiSearch More Titles in Bibliography
Web Reference
Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.Additional resources
USDA: Find Parthenium incanum in USDA PlantsFNA: Find Parthenium incanum in the Flora of North America (if available)
Google: Search Google for Parthenium incanum
Metadata
Record Modified: 2022-12-30Research By: TWC Staff