Biriba Fröer (Rollinia deliciosa)
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Annona mucosa är en kirimojaväxtart som beskrevs av Nikolaus Joseph von Jacquin. Annona mucosa ingår i släktet annonor, och familjen kirimojaväxter. Inga underarter finns listade i Catalogue of Life.
Rollinia deliciosa is a species of flowering plant in the custard-apple family, Annonaceae, that is native to tropical South America. It is cultivated for its edible fruits, commonly known as biriba or wild sugar-apple, throughout the world's tropics and subtropics.
The Brazilian name, biriba has become somewhat well known. Nonetheless, the fruits are occasionally known by other names, including wild sugar apple and aratiku.
Biriba is a fast-growing, flood-tolerant, sun-loving tropical tree, with leaves up to 35 cm long. It can reach a height of 4–15 m (13–49 ft), which can bear fruit from seed within 3 years. The fruit is large, conical or round, green when unripe, ripening to yellow. Its surface is covered with soft spines or protuberances which bruise and blacken with handling, giving it an unappealing appearance. This delicacy, together with a shelf life of less than a week has limited its commercial cultivation. However it is an increasingly popular tree for homestead cultivation in tropical areas.
The fruit pulp is very soft and sweet, tasting somewhat like a lemon meringue pie. Some reports of the flavor are extremely favorable, others more moderate. It is generally eaten out of hand, though some chefs have used it for cooking, and wine has been made out of it in Brazil.
Propagation is usually by seeds, which can remain viable for 2 years kept dry and in the dark, though air-layering and grafting are possible to preserve specific cultivars. Grafting onto rootstocks of Annona montana or Annona glabra causes dwarfing. Little work establishing superior cultivars has been done and considerable genetic variability exists. ‘Regnard’ is perhaps the best known cultivar, which was introduced into the Philippines in 1917. The largest is 'biriba do Alto Solimoes', developed in Brazil, which can weigh up to 4 kg, making it probably the third largest fruit of the Annona family after the junglesop and the soursop.
The wood of the biriba tree is durable and suitable for boat construction.
Young biriba trees are traditionally used as the main bow of the Afro-Brazilian instrument berimbau, named after the biriba tree.