The 'Large Hop Trefoil' (''Trifolium aureum''), also sometimes known as 'Golden clover' or 'Hop clover', is a species of
clover native to much of central and southern
Europe.
Large Hop Trefoil is a small erect
herbaceous biennial plant growing to 10-30 cm tall. Like all clovers, it has leaves divided into three sessile
leaflets, each leaflet 15-25 mm long and 6-9 mm broad. Its yellow
flowers are arranged into small, elongated round
inflorescences 12-20 mm diameter, located at the end of the
stem. Each individual flower is
decumbent. As they age, the flowers become brown and paper-like. The
fruit is a pod usually containing two
seeds.
The closely related
Hop Trefoil (''T. campestre'') is a similar, but shorter, spreading, species with smaller leaves and flowers. The middle leaflet of its leaves also has a short rachis.
Cultivation and uses
The plant is very common, and grows well on poor, undisturbed grounds. While it probably has good nutritive values,
perennial species are favored as forage.
It was introduced to
North America (
Pennsylvania) in
1800, where it is now found in the eastern and western regions, but not in the middle or southern states. In
Canada, it is found in the south of all provinces.
References
The Illustrated Flora of Britain and Northern Europe, Blamey, M. & Grey-Wilson, C., , , Hodder & Stoughton, 1989, ISBN 0-340-40170-2