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Phaseolus dumosus (strict botanic Phaseolus ×dumosus Macfad.), the year bean or year-long bean,[1][2] is an annual to perennial herbaceous vine in the family Fabaceae (legumes), native to a narrow region in the highlands of Guatemala.[2][3] It is one of the five Phaseolus domesticates and is similarly used for its beans.[1] It was recently found to be a hybrid between two other cultivated species of Central America, Phaseolus coccineus and P. vulgaris and displays intermediate characteristics.[2] Taxonomically, it was previously categorized as Phaseolus polyanthus and P. coccineus ssp. darwinianus.[4]
| Phaseolus dumosus | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Subfamily: | Faboideae |
| Tribe: | Phaseoleae |
| Subtribe: | Phaseolinae |
| Genus: | Phaseolus |
| Species: | P. dumosus |
| Binomial name | |
| Phaseolus dumosus Macfady | |
| Synonyms | |
| |
This species grows in humid forests and may reach 10 meters in length. It is visited by carpenter bees.[3]
The plant prefers a cool and humid environment.[1]
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