Black oak
General poisoning notes:
Black oak (Quercus
velutina) is a native tree found only in southern Ontario. The acorns
contain significant quantities of toxic phenolics. This plant caused sickness
and death in cattle after they ingested acorns on autumn pastures. The
occurrence of poisoning from black oak in southern Ontario is minimal because
of its restricted distribution (Sandusky et al. 1977, Basden and Dalvi 1987).
Nomenclature:
Scientific Name: Quercus velutina Lam.
Vernacular
name(s): black oak
Scientific family
name: Fagaceae
Vernacular family
name: beech
Geographic Information
Ontario
Notes on Poisonous plant parts:
Ingesting oak
leaves and acorns has caused poisoning. Immature acorns contain more toxin than
mature acorns (Sandusky et al. 1977).
Toxic parts:
Acorns, leaves
Notes on Toxic plant chemicals:
See notes under
chemical section of red oak (Quercus rubra).
Toxic plant chemicals:
Gallic acid, pyrogallol,
tannic acid
Animals/Human Poisoning:
Note: When an
animal is listed without additional information, the literature (as of 1993)
contained no detailed explanation.
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