Although frequently referred to in American literature as the hops "vine", it is technically a bine; unlike vines, which use tendrils, suckers, and other appendages for attaching themselves, bines have stout stems with stiff hairs to aid in climbing.
In British literature the term "vine" is generally reserved for the grape genus Vitis.
Humulus is described as a twining perennial herbaceous plant which sends up new shoots in early spring and dies back to the cold-hardy rhizome in autumn.
[4] Bitter acids are divided into the alpha-acids, with humulone the major compound, and the beta-acids, with lupulone the major compound;[5] the alpha-acids isomerize during the brewing process to form iso-alpha acids, which themselves have a bitter taste.
Hops are boiled with the wort in brewing beer and sometimes added post-ferment; they impart a bitterness, flavor, as well as aroma to the finished product.