Sisymbrium altissimum L.

Occurrence in 1953 as known
from preserved specimens (#) in
DAO, can, and acadia herbaria, and
from sight records by D. Erskine
or reliable reports (O).
PLANTS OF PRINCE EDWARD ISLAND, CANADA
Sisymbrium altissimumïi.
Railroad gride near Queens County jail,
Charlottetown.
Waste ground; 2 or 2. 5 feet tall - a conspicuous
colony.
No. 1488 Coll. D. Erskine August 14, 1952
(5 repl. )
Division of Botany, Science Service
Department of Agriculture, Ottawa, Canada
03197145