ranges from 45.0 to 61.5% on dry matter weight. Species with hollow, one-layered thalli were formerly included in Enteromorpha, but it is widely accepted now that such species should be included in Ulva.. Ulva lactuca is a thin flat green algae growing from a discoid holdfast. High nutrients and fresh water are often indicated by its presence. Kylin, 1907 Ulva lactucaefolia S.F.Gray, 1821 Ulva … Ulva lactuca application had a negative effect on crop appearance in both crops and reduced shoot dry matter in lettuce (p<0.05) and mustard (p<0.10). The margin is somewhat ruffled and often torn. Classification. Description. 1 Introduction Heavy mats of sea lettuce (Ulva lactuca) tend to collect in upper estuary areas during the warmest months of the year on Prince Edward Island (P.E.I.). Description. Ulva fasciata in a tidepool at O‘ahu. Free and Open Access to Biodiversity Data. This is a small genus of marine and brackish water green algae. A small green alga (up to 30 cm across) with a broad, crumpled frond that is tough, translucent and membranous. Ulva lactuca, also known by the common name sea lettuce, is an edible green alga in the family Ulvaceae.It is the type species of the genus Ulva.It is sometimes known as U. fenestrata, referring to its "windowed" or "holed" appearance.. from Ulva lactuca in previous studies, there are still no studies on the production of CNF from the extracted cellulose. It may reach 18 cm or more in length, though generally much less, and up to 30 cm across. content of Ulva lactuca sp. A promising species. Some species also grow in brackish water rich in organic matter or sewage and can accumulate heavy metals. The Sea Lettuce – Ulva lactuca plants grow attached, without a stipe, to rocks, other seaweeds and various substrates, by a disc shaped holdfast. Ulva lactuca and Ulvaria splendens could both be cultivated on diluted DPM as growth medium, with U.lactuca reaching the highest growth rates. Habitat: High and low intertidal zones; water to 75 feet deep. Description ID 4a7a1894-7e98-4fb1-a654-ab4bfe2c1127 Institution Code MICH Collection Code Algae Catalog Number 734717 Type PhysicalObject Modified 2016-3-14 ... Ulva lactuca Kingdom Plantae Phylum Chlorophyta Class Ulvophyceae Order Ulvales Family Ulvaceae Genus Ulva Specific Epithet lactuca Taxon Rank species. Description ID 77a09a29-20e5-4739-8d30-10afd2eb91b0 Institution Code MICH Collection Code Algae Catalog Number 734638 Type PhysicalObject Modified 2016-3-14 ... Ulva lactuca Kingdom Plantae Phylum Chlorophyta Class Ulvophyceae Order Ulvales Family Ulvaceae Genus Ulva Specific Epithet lactuca Taxon Rank species. , reaching a growth rate of 40 % a day in optimal conditions Wikimedia... 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