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Oxalis triangularis, commonly called false shamrock, is a species of perennial plant in the family Oxalidaceae. It is native to several countries in southern South America . This woodsorrel is typically grown as a houseplant but can be grown outside in USDA climate zones 8a–11, preferably in light shade.
Oxalis adenophylla, commonly known as Chilean oxalis or silver shamrock (among other common names), is an Argentinian and Chilean alpine plant. It does well in far-north locations such as Sweden, Norway and Nova Scotia (Canada), as well as in purely temperate regions. Its cold-hardiness comes from the bulb's adaptation to freezing during dormancy.
Several species are grown as pot plants or as ornamental plants in gardens, for example, O. versicolor. Oxalis flowers range in colour from whites to yellow, peaches, pink, or multi-coloured flowers. [11] Some varieties have double flowers, for example the double form of O. compressus.
The shamrock carries religious ties, while the four-leaf clover is considered a sign of luck due to its exceeding rarity. In fact, around one out of 10,000 clovers have four leaves.
The shamrock is synonymous with Ireland and St. Patrick's Day. Mary Lee offers a history lesson and some interesting facts about this plant. Over the Garden Fence: All about shamrocks
Parochetus communis, known in English as shamrock pea or blue oxalis, [1] is a species of legume, and the only species in the genus Parochetus and in the subtribe Parochetinae. [6] It is a low-growing plant with blue papilionaceous flowers and clover -like leaves.
As the name would imply, this species of Oxalis typically has pink to violet flowers [7] with petals 10–15 mm long. [8] This species has "Plants arising from a thick, woody, irregularly nodulate-segmented rhizome often with persistent, thickened, and lignescent petiole bases; flowers 3–12 in umbelliform cymes, less commonly in irregular cymes". [9]
Oxalis tetraphylla (often traded under its synonym O. deppei) is a bulbous herbaceous perennial plant from Mexico. It is sometimes sold as lucky clover or shamrock (though it is neither a clover nor a shamrock). In the wild or feral state it is often called four-leaved wood-sorrel after its family, Oxalidaceae.