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Physalins are steroidal constituents of Physalis plants which possess an unusual 13,14-seco-16,24-cyclo-steroidal ring skeleton (where the bond that is normally present between the 13 and 14 positions in other steroids is broken while a new bond between positions 16 and 24 is formed; see figure below). [1]
A defining feature of Physalis is a large, papery husk derived from the calyx, which partly or fully encloses the fruit. [5] Many species bear edible fruit, and some species are cultivated. The typical Physalis fruit is similar to a firm tomato in texture, and like a sweet, tangy grape in flavor. [6]
Physalis coztomatl is a plant species in the genus Physalis. It produces edible orange-yellow fruits, but is rarely cultivated. The leaves are oval-shaped. It is native to America; the Aztecs used it medicinally. [2] It contains labdane diterpenes, and was the first species in Physalis in which they were found. [3]
Physalis pubescens is a species of flowering plant in the nightshade family known by many common names, including husk tomato, [2] low ground-cherry [3] and hairy groundcherry in English, and muyaca and capulí in Spanish. It is native from Brazil, but also found in southern half of the United States, Mexico, Central and much of South America.
Physalis longifolia, known by the common names common groundcherry, longleaf groundcherry, [1] and wild tomatillo, [2] is a species of flowering plant in the nightshade family, Solanaceae. It is native to North America, where it is native to eastern Canada, much of the continental United States, [ 1 ] and northern Mexico.
Physalis walteri, commonly known as Walter's groundcherry or dune groundcherry, is a species of flowering plant. [ 3 ] [ 4 ] Its native distribution is Alabama, Florida, Georgia and Virginia in the United States as well as Northeast Mexico. [ 5 ]
The family Physaliidae is monotypic, consisting of only one genus, Physalia. [2] The genus is also monotypic, containing only P. physalis. [1] [3] There is a long history of the genus being described with multiple species, such as the Pacific man o' war (P. utriculus), however most of these species are now considered synonyms for P. physalis.
Physalis pruinosa is a plant in the genus Physalis in the nightshade family Solanaceae, often referred to as ground cherry or husk tomato. It is a native species in a range extending from northern Mexico through Central America. [ 1 ]