BugwoodWiki Article

woollyleaf bursage
Ambrosia grayi (A. Nels.) Shinners

Overview

Appearance
Ambrosia grayi is a perennial that can grow up to 3.9-11.8 in. (10-30 cm) tall. Ambrosia grayi has many different common names: Bur Ragweed, Woollyleaf bursage and Lagoonweed.
Foliage
The leaves are opposite and have a dusty green color. They can grow up to 0.39-1.8 in. (10-45 mm) in length. The stems are erect.
Flowers
Flowering occurs from August to September. Ambrosia grayi produces burs that are 0.12-0.2 in. (3-5 mm) round.
Fruit
The fruits are burs that contain the seeds.
Ecological Threat
Ambrosia grayi can be found infesting roadsides, ditches, fields and mid wet areas. This plant can easily transplanted by its burs. The burs can attach themselves to clothes, people and animals. This plant is native to northern Mexico.

Selected Images


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woollyleaf bursage
Ambrosia grayi
Plant(s)
Howard F. Schwartz

Maps


EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org

EDDMapS Distribution

State Regulated List - This map identifies those states that list this species on their regulated list. For more information, visit Invasive.org

State Regulated List

Invasive Listing Sources

Taxonomic Rank

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Asteridae
Order: Asterales
Family: Asteraceae
Genus: Ambrosia

Other System Links

Plants: AMGR5
Bayer: AMBGR
GRIN: 103823
ITIS: 36508
NPDN Pest: PBFAEBI
NPDN Host: 36308

Synonyms and Other Names

Other Common Names:
woollyleaf burr ragweed, bur ragweed, lagoonweed, woollyleaf bursage, woollyleaf franseria, woollyleaf povertyweed

Categories

Category: Forbs/Herbs