Twinkham Lea near Seaton Carew (John Hogg); and at Birch Carr near Middleton-one-Row (W. Backhouse! F.).
2. H. perforatum, L. Native. British type. Area C, N, D. Range 1.
Common by road-sides and on the edge of fields, ascending in Teesdale to 800 feet. Var. lineolatum has been gathered in North Tynedale not far from Hexham by Mr. W.H. Brown.
3. H. dubium, Leers. Native. English type. Area C, N, D. Range 1.
Tweed bank near the Chain Bridge and other places near Berwick (Johnston). In Coquetdale below Rothbury, and by the river side near Alwinton (B.). In several places in the lower part of Tynedale, Teesdale, and Weardale, ascending above Stanhope and Middleton, 800 feet.
4. H. quadrangulum, L. Native. British type. Area C, N, D. Range 1, 2.
Frequent in ditches and swampy places, ascending to 350 yards in Harthope (Wear district), and to 400 yards in Teesdale west of the High Force.
5. H. humifusum, L. Native. British type. Area C, N, D. Range 1, 2.
Frequent on sandy banks, ascending in Teesdale to High Force Wood, 350 yards (W. Foggitt).
6. H. pulchrum, L. Native. British type. Area C, N, D. Range 1, 2.
Frequent on sandy heaths, ascending to 500 yards in the Dunsdale ravine of Cheviot, and nearly as high in Teesdale (Caldron Snout and Falcon Clints) and East Allendale.
7. H. hirsutum, L. Native. British type. Area C, N, D. Range 1, 2.
Frequent in woods and upon hedge-banks, especially on the
