Hypertext Webster Gateway: "Ulva"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Ulva \Ul"va\, n. [L., sedge.] (Bot.)
A genus of thin papery bright green seaweeds including the
kinds called sea lettuce.
From WordNet (r) 1.7 (wn)
Ulva
n : type genus of the family Ulvaceae; green seaweed having a
thallus two cells thick: sea lettuce [syn: {Ulva}, {genus
Ulva}]
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