Ambrosia trifida L.

The New York

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Harvard University, Gray Herbarium (GH)

PLANTS OF LOUISIANA

Ambrosia trifida L.
ASTERACEAE

Branched herbs to 7ft tall, locally common. At the edge of a
swamp forest in damp silty clay-loam (Convent soils; coarse-1
silty, mixed, superactive, nonacid, thermic Fluvaquentic
Endoaquepts). Growing with Acer negundo, Ampelopsis
arborea, Andropogon glomeratus, Campsis radicans, Celtis
laevigata, Cornus foemina, Desmodium perplexum,
Elephantopus carolinianus, Equisetum hyemale, Eupatorium I
coelestinum, Fraxinus pensylvanica, Platanus occidentalis,
Quercus laurifolia, Q. nigra, Rubus trivialis, Sapium
sebiferum, Smilax rolundifolia (?), Solarium carolinianum,
Solidago altissima, Spilanthes americana (?), Taxodium
distichum, & Toxicodendron radicans. Along the E side of a I
road below an artificial levee, & at the intersection with a gas|
line right-of-way, to the E side of the Atchafalaya River,
about 0.25mi N of the Rt. 190 bridge. Pointe Coupee Parish.
Elev. about 25ft. 30° 33’ 04.2"N, 91° 44’ 52.8"W; UTM 15R|
620084E, 3380530N (NAD83/WGS84).

Coll. Doug Goldman #4034
23 September 2008

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