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Physalis

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Physalis

Physalis (/ˈfsəlɪs/, /fɪ-/, /fˈslɪs/, /-ˈsæ-/, from Ancient Greek: φυσαλλίς phusallís 'bladder') is a genus of approximately 75 to 90 flowering plants in the nightshade family (Solanaceae), which are native to the Americas and Australasia. At least 46 species are endemic to Mexico. Cultivated and weedy species have been introduced worldwide. A defining feature of Physalis is a large, papery husk derived from the calyx, which partly or fully encloses the fruit. 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. Some species, such as the Cape gooseberry and tomatillo, have been bred into many cultivars with varying flavors, from tart to sweet to savory. Nations including Colombia, India, and Mexico have a significant economic trade in Physalis fruit. The fruits of many species are generically referred to as physalis, groundcherries, husk tomatoes, husk cherries, poha berries, and golden berries.

Physalis species are herbaceous plants growing to 0.4 to 3.0 m (1 to 10 ft) tall, similar to the common tomato, a plant of the same family, but usually with a stiffer, more upright stem. They can be either annual or perennial. Most require full sun and fairly warm to hot conditions. Some species are sensitive to frost, but others tolerate cold when dormant in winter.

A 52-million-year-old fossil fruit of Physalis has been found in Patagonia, named as Physalis infinemundi.

Estimates for the earliest use of Physalis for human consumption range from 900 to 5000 BCE. Archaeological sites support the historical use of Physalis as a food for indigenous people in what is now northern Mexico and portions of the United States.

Physalis fruit are rich in cryptoxanthin. The fruit can be used like the tomato. Once extracted from its husk, it can be eaten raw and used in salads. Some varieties are added to desserts, used as flavoring, made into fruit preserves, or dried and used like raisins. They contain pectin and can be used in pie filling. Ground cherries are called poha in the Hawaiian language, and poha jam and preserves are traditional desserts made from Physalis plants grown on the Hawaiian Islands.

A 2013 literature review identified more than one hundred works with medical use of various Physalis species from the Americas. Preparations included all parts of the plants (fruits, leaves, flowers, stems, and roots) and took forms including decoction, infusion, and soaking. Herbal preparations are known to be administered internally and externally.

Physalis plants grow in most soil types and do very well in poor soils and in pots. They require moisture until fruiting. Plants are susceptible to many of the common tomato diseases and pests, and other pests such as aphids, whiteflies, spider mites, and the false potato beetle (Leptinotarsa juncta) also attack them. Propagation is by seed.

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