Ambrosia psilostachya - Wikipedia
Ambrosia psilostachya is an erect perennial herb growing a slender, branching, straw-colored stem to a maximum height near two meters, but more often remaining under one meter tall. Leaves are up to 12 centimeters long and vary in shape from lance-shaped to nearly oval, and they are divided into many narrow, pointed lobes.
Ambrosia psilostachya (perennial ragweed) | CABI Compendium
This datasheet on Ambrosia psilostachya covers Identity, Overview, Distribution, Dispersal, Hosts/Species Affected, Diagnosis, Biology & Ecology, Environmental Requirements, Natural Enemies, Impacts, Uses, Prevention/Control, Further Information.
Perennial Ragweed, Dunbible Weed, Ragweed, Roman …
Perennial Ragweed (Ambrosia psilostachya) is an erect stout robust perennial herb to 1 metre tall, occasionally 2 metres tall. Young plants form a basal rosette of leaves during the early stages of growth, then elongate producing erect stems.
Ambrosia psilostachya - US Forest Service
SPECIES: Ambrosia psilostachya GENERAL BOTANICAL CHARACTERISTICS : Cuman ragweed is a warm-season, native perennial forb. The main stem rises from shallow (2 inches [5 cm]) or deep, branching rhizomes which extend down 3 to 6 feet (0.9-1.8 m) [ 6 , 70 ].
Western Ragweed
Ambrosia psilostachya is a species of ragweed known by the common names Cuman ragweed, perennial ragweed, and western ragweed. It is native to most of North America including all of southern Canada, nearly all of the continental United States, and the northern half of Mexico.
Ambrosia psilostachya DC. - Calflora
Ambrosia psilostachya is a perennial herb that is native to California, and also found elsewhere in North America and beyond.
Ambrosia psilostachya - USGS
Ambrosia psilostachya is similar to A. artemisiifolia but its leaves are only once-pinnately divided, while those of A. artemisiifolia are twice-pinnate. Difficult to pull up, attached to underground rhizome. This species in invasive in new planting and can displace native perennial seedlings.
Western Ragweed - Nature Collective
Western ragweed (Ambrosia psilostachya) is a tall, rather weedy plant native to much of North America and best known for its contribution to fall hay fever. The late summer flower heads are not conspicuous, but, allergies permitting, they are worth a close look.
Ambrosia psilostachya (Western Ragweed) - Minnesota …
Abundant, slender spike-like racemes, 1 to 6 inches long, at the tip of the central stem and side branches. Male (staminate) flowers are tiny, yellow to greenish and bead-like, short stalked, initially densely packed along the cluster but spreading out as the plant matures.
Ambrosia psilostachya - USA-NPN
Rodents eat the seeds of Ambrosia psilostachya, including the Thirteen-Lined Ground Squirrel and Prairie Vole. Mammalian herbivores eat the bitter foliage to a limited extent.