Plantago major (common plantain), common in open land at Smith’s in 1853.
Pontederia cordata* (pickerel-weed), only near Oldtown, 1857.
Potamogeton (pondweed), not common.
Potentilla tridentata (mountain cinquefoil), Kineo.
Potentilla Norvegica (cinquefoil), Heron Lake shore and Smith’s.
Polygonum amphibium (water persicaria), var. aquaticum Second Lake.
Polygonum Persicaria (lady’s-thumb), log-path, Chesuncook, 1853.
Nuphar advena (yellow pond-lily), not abundant.
Nymphæa odorata (sweet water-lily), a few in West Branch, 1853.
Polygonum Hydropiper (smart-weed), log-path, Chesuncook.