On the Banks of Tyne at Bywell and the Riding, N. Near Darlington, D.—W. Backhouse, jun. In the West Lane at Chester-le-street, D.-Rev. J. T. Fenwick.
519. Mentha hirsuta, var. α. M. aquatica major et minor. Sole.
On the Banks of Rivulets and Ditches.
Mentha hirsuta, var. ζ. M, rivularis β, γ, et δ, nec α. Sole.
At Prestwick Carr, N.
Mentha hirsuta, var. ε.
At Prestwick Carr, N.
520. Mentha rubra. M. sativa. Sole.
On the Banks of Team near the High Forge, D. On the Banks of the Gaunless in the Bishop's Park, Bishop Auckland, D.—W. Backhouse, jun.
521. Mentha gentilis, var. α. M. rubra. Sole.
On the Banks of Team near the High Forge, D. By the Road Side near Winston, D.—W. Backhouse, jun.
Mentha gentilis, var. y. M. variegata Sole.
In old Gardens about Towns, but scarcely wild.
522. Mentha arvensis, var. α.
In Corn Fields about Beamish and Cawsey, D.
Mentha arvensis, var. δ.
In Ditches at Prestwick Carr, N.
Mentha arvensis, var. i. M. agrestis. Sole.
In Cawsey Wood near Beamish, D.
