Pontederia cordata * (pickerel-weed), only near Oldtown, 1857.
Potamogeton (pond-weed), not common.
Potentilia 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.
Pyrola secunda (one-sided pyrola), very common, Caucomgomoc.
Pyrola elliptica (shin-leaf), Caucomgomoc River.
Ranunculus Flammula (spearwort, var. reptans).
Ranunculus recurvatus (hooked crowfoot), Umbazookskus landing, &c.
Typha latifolia * (common cat-tail or reed-mace), extremely abundant between Bangor and Portland.
Sanicula Marylandica (black snake-root), Moosehead carry and after.
Aralia nudicaulis (wild sarsaparilla).
Capsella bursa-pastoris (shepherd's-purse). Smith's, 1853.
Prunella vulgaris (self-heal), very common everywhere.
Erechthites hieracifolia (fireweed), 1857, and Smith's open land, 1853.
Sarracenia purpurea (pitcher-plant). Mud Pond swamp.
Smilacina bifolia (false Solomon's-seal), 1857, and Chesuncook woods, 1853.
Smilacina racemosa (false spikenard?), Umbazookskus carry (July 27, 1853).
Veronica scutellata (marsh speedwell).
Spergula arvensis (corn spurrey), 1857, not uncommon, 1853, Moosehead and Smith's.
Fragaria (strawberry), 1853 Smith's, 1857 Bucksport.
Thalictrum Cornuti (meadow-rue), very common, especially along rivers, tall, and conspicuously in bloom in July, 1857.
Cirsium arvense (Canada thistle), abundant at camps and highway sides in the north of Maine.
Cirsium muticum (swamp-thistle), well in bloom Webster Stream, August 31.
