A shrubby plant of the genus Alhagi, native to arid regions, producing a gummy resin used in traditional medicine and as an adhesive.
From Arabic 'al-hajji', the plant name reflecting the Middle Eastern origin of both the plant and its name. The genus was formally named by botanists using the Arabic popular name.
Alhagi plants produce a mysterious substance called 'manna'—medieval Europeans thought it fell from heaven, but it's actually a gummy secretion the plant makes, showing how the same natural substance gets wildly different explanations depending on what you know about plant biology.
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