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The common periwinkle or winkle (Littorina littorea) is a species of small edible whelk or sea snail, a marine gastropod mollusc that has gills and an operculum, and is classified within the family Littorinidae, the periwinkles. [2] This is a robust intertidal species with a dark and sometimes banded shell.
Catharanthus is a genus of flowering plants in the family Apocynaceae.Like the genus Vinca, they are known commonly as periwinkles. [3] There are eight known species. Seven are endemic to Madagascar, [4] though one, C. roseus, is widely naturalized around the world.
Catharanthus roseus, commonly known as bright eyes, Cape periwinkle, graveyard plant, Madagascar periwinkle, old maid, pink periwinkle, rose periwinkle, [2] is a perennial species of flowering plant in the family Apocynaceae.
Melarhaphe neritoides, common name : the small periwinkle, is a species of small sea snail, a marine gastropod mollusc in the family Littorinidae, the winkles or periwinkles. [1] This species was previously known as Littorina neritoides. Melarhaphe is a monotypic genus, in other words, this is the only species in that genus.
Littorina saxatilis, common name the rough periwinkle, is a species of small sea snail, a marine gastropod mollusc in the family Littorinidae, the winkles or periwinkles. First identified in the 1700s, it has been misidentified as a new species 112 times.
These subfamilies have been recognized in the taxonomy of Bouchet & Rocroi (2005): . Subfamily Littorininae Children, 1834 – synonyms: Echinininae Rosewater, 1972; Tectariinae Rosewater, 1972; Melaraphidae Starobogatov & Sitnikova, 1983
Littorina obtusata, common name the flat periwinkle, is a species of sea snail, a marine gastropod mollusk in the family Littorinidae, the winkles or periwinkles. [1]
Nodilittorina pyramidalis, commonly known as a pyramid periwinkle, is a species of sea snail, a marine gastropod mollusc in the family Littorinidae, the winkles or periwinkles. [ 1 ] The subspecies Nodilittorina pyramidalis pascua Rosewater, 1970 is a synonym of Echinolittorina pascua (Rosewater, 1970)