sea-lettuce
The seaweeds Ulva lactuca and U. latissima.
| 1668 Wilkins Real Char. ii. iv. §3. 71 Sea-lettice. 1732 [see laver n.1 2]. 1753 Chambers' Cycl. Suppl., Lactuca marina, sea lettuce, in botany, a name used by some authors for the lichen marinus, commonly called oister green. 1875 Encycl. Brit. II. 218/2 [He] recommends the growth of sea-lettuce (Ulva latissima) in tanks, as suitable both for oxygenating the water and for food for the fishes. |