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Ulva lactuca, also known by the common name sea lettuce, [1] is an edible green alga in the family Ulvaceae. It is the type species of the genus Ulva . A synonym is U. fenestrata , referring to its "windowed" or "holed" appearance, Despite the name, it is not a lettuce .
The sea lettuces comprise the genus Ulva, a group of edible green algae that is widely distributed along the coasts of the world's oceans. The type species within the genus Ulva is Ulva lactuca , lactuca being Latin for "lettuce".
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U. Ulva (alga) Ulva acanthophora; Ulva anandii; Ulva atroviridis; Ulva australis; Ulva bifrons; Ulva brevistipita; Ulva burmanica; Ulva californica; Ulva chaetomorphoides
Ulva lactuca var. rigida , Le Jolis, 1863; Heterotypic: Phycoseris ulva Sonder, 1845; ... Ulva rigida is a species of green algae in the family Ulvaceae.
Inhabits Ulva Lactuca on the shores of Flintshire. "T." is an abbreviated word testa from Latin language, that means "shell". The shell is often heavily corroded, usually whitish with brown peristome present on the last whorl. [3] The shell has 5-7 very weakly convex whorls, that are regularly increasing but not always regularly rounded. [3]
The sea lettuce, Ulva, belongs here. Other well-known members include Caulerpa, Codium, Acetabularia, Cladophora, Trentepohlia and Monostroma. The Ulvophytes are diverse in their morphology and their habitat. Most are seaweeds such as those listed above.
Rigid sea lettuce Ulva rigida C.Agardh 1823, syn. Phycoseris rigida (C.Agardh) Kützing 1843, Ulva lactuca var. rigida (C.Agardh) Le Jolis 1863, [93] (Cape Peninsula to tropical East Africa) [2] [6] Ulva uncialis (Kützing) Montagne 1850, syn. Phycoseris uncialis Kützing 1849, Ulva capensis Areschoug 1851, [94] (Namibia to Cape Agulhas) [2]