river weedn.

1633 T. Johnson Gerard's Herball (new ed.) iii. clxiv. 1570 (caption) Conferua. Hairy Riuerweed.

1671 S. Skinner & T. Henshaw Etymologicon Botanicum in Etymologicon Linguæ Anglicanæ River-weed, Conferva Plinii.

1704 Dict. Rusticum at Sea Sea and River Weeds.

1756 T. Hale et al. Compl. Body Husbandry v. xxxviii. 245/1 There is not so ill-tasted a Fowl in the World [as the young cygnet], for its Food being River Weeds, gives the Flesh a very rank and disagreeable Taste.

?a1808 Universal Syst. Nat. Hist. XIV. 240 The Confervas, or river-weed, are all inhabitants of the water, some in fresh, but most in salt, water.

1895 Jrnl. Royal Agric. Soc. 3rd Ser. 6 12 He..advised river-weeds and sedge as a manure for them.

1906 Zoologist 10 309 In the winter, when the river-weeds have died down, the birds often come ashore, along the banks and meadows, to eat fresh green grass.

1952 Times 19 July 5/5 Experiments were being carried out in the chemical destruction of river weeds.

2001 Kenyon Rev. Winter 11 Bicycles and a fax machine roped in river weed lay where they'd been thrown to the bank.

1832 W. D. Williamson Hist. Maine I. 128 We have, also,..Oar-weed, River-weed, and Succory, as common herbs.

1848 A. Gray Man. Bot. Northern U.S. 403 Podostemaceæ. (River-weed Fam.)

1913 Bull. (Vermont Bird Club) Apr. 9 We gathered..some interesting Lysimachia hybrids..and from the rocks in the river the river weed, Podostemum ceratophyllum.

1960 Castanea 25 26 Podostemum ceratophyllum Michx. River-weed. On rocks in New River, 5–20 feet from shore in rapidly flowing water.

1973 Amer. Midland Naturalist 89 383 At Station 6, river weed (Podostemum sp.) predominated during the summer and early autumn.

2002 Southwestern Naturalist 47 604/1 River weed, Podostemum ceratophyllum (Podostemaceae), is a macrophyte typically found growing attached to rocks in swiftly flowing water.