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The radula (US: / ˈ r æ dʒ ʊ l ə /; pl.: radulae or radulas) [1] is an anatomical structure used by mollusks for feeding, sometimes compared to a tongue. [2] It is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food enters the esophagus .
Radula acuta Mitt. Radula acutangula Steph. Radula acutiloba Steph. Radula aguirrei R.M.Schust. ex M.A.M.Renner Radula allisonii Castle Radula amentulosa Mitt. Radula amoena Herzog Radula anceps Sande Lac. Radula aneurysmalis (Hook.f. & Taylor) Gottsche, Lindenb. & Nees Radula angulata Steph. Radula anisotoma M.A.M.Renner Radula appressa Mitt.
The most common compounds found in Radula species are 3,5-dihydroxy-2-(3-methyl-2-butenyl)bibenzyl and 2-geranyl-3,5-dihydroxybibenzyl, which often form the basic structure for more complex molecules in these plants. [17] Of particular interest is the presence of compounds similar to those found in cannabis (cannabinoids) in some Radula species
Raja radula distribution (in red). [6] Raja radula is a benthic species native to the Mediterranean Sea. [7] Some Atlantic records are probably misidentifications of Leucoraja naevus and/or Raja africana and need to be clarified. [8] This species inhabits coastal areas, between 2 and 300m depth on sandy or muddy bottoms of the continental shelf ...
The main cannabinoids in Radula marginata are not THC or CBD, the most common psychoactive chemicals produced by cannabis, but they are of similar molecular structure. [4] The liverwort contains perrottetinene and perrottetinenic acid. [4] It also contains a CBD analogue called Perrottetinene diol (trans-PTD) [6]. The proportion of cannabinoids ...
Turritella radula is a species of sea snail, a marine gastropod mollusk in the family Turritellidae. [1] The Mollusk is found in the south-eastern Bioregion, it is found mainly in Santa Cruz. Mexico, Acapulco, Ecuador and the Galapagos islands.
Silphium radula can be distinguished from S. gracile by its shorter peduncles, resulting in its stem leaves often subtending the flower heads (as opposed to flowers being on long naked peduncles as in S. gracile). In addition, S. radula has basal leaves which are absent at flowering time, as opposed to the persistent basal leaves of S. gracile.
Radula visianica was first described by the Italian botanist Caro Massalongo in 1904, [4] based on specimens he had collected in February 1878. The species name honours Roberto de Visiani, a 19th-century botanist who owned a villa near the original collection site in the Euganean Hills of northeastern Italy.