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Weakleaf Burr Ragweed, Weakleaf Bur Ragweed, Weakleaf Bursage

Ambrosia confertiflora DC.

Asteraceae (Sunflower Family)

▲▼young plants emerging from creeping rootstocks

▲▼young plants

▲ mature leaf

▲mature plants with flowers

▲▼inflorescences

Ambrosia confertiflora DC., Weak-leaf Bur Ragweed, Weak-leaf Bursage: (Bayer Code:  FRSCO; US Code AMCO3)

·         Creeping perennial appearing similar to skeletonleaf bursage, but weakleaf bur ragweed is more green with strong bad odor, compared to the more medicinal odor, grayer-leaved skeletonleaf bursage

·         Leaves more similar-colored on both sides of leaves, and has glands on leaves that add to the bad odor

·         Grows 1-3 feet tall, preferring dry, sandy soils

          (Photos taken at Dead Horse Ranch State Park near Cottonwood, Arizona)

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Posted 19 January 2019