Page:Transactions of the Natural History Society of Northumberland, Durham, and Newcastle-upon-Tyne (1867).djvu/302

3. A. caryophyllea Aira caryophyllea, L. Native. British type. Area C, N, D. Eange 1.

Frequent in sandy ground, ascending Coquetdale to Alwinton, Redesdale to Rochester, Teesdale to 300 yards near Middleton.

4. A. praecox Aira praecox, L. Native. British type. Area C, N, D. Range 1, 2.

Frequent on sandy heaths, ascending to 500 yards in Rookhope and East Allendale.

12. AVENA, L.

1. A. fatua Avena fatua, L. Colonist. British type. Area C, N, D. Range 1.

A common weed in cultivated fields, ascending in Coquetdale to Alwinton, Weardale to Frosterley, 200 yards.

2. A. strigosa Avena strigosa, Schreb. Colonist. British type. Area C, D. Range 1, 2.

An occasional weed, but much less frequent than the preceding. Alnwick, Ravensworth, Tanfield, Burnopfield, Sunderland, Castle Eden, St. John's Chapel, 350 yards, Bishop Auckland, &c.

3. A. pratensis Avenula pratensis, L. Native. Xerophilous. British type. Area C, N, D. Range 1, 2.

Frequent on the limestone and porphyry, ascending to Heathpool Linn, Sharperton, and in Harwood to the Main Limestone cliffs, 550 yards.

4. A. pubescens Avenula pubescens, L. Native. British type. Area C, N, D. Range 1-3.

Everywhere common in pastures, ascending to 550 yards in Harwood Dale near Grasshill.

5. A. flavescens Trisetum pubescens, L. Native. English type. Area C, N, D. Range 1, 2.

Everywhere common in grassy places, ascending to 550 yards in East Allendale.