''Echinopsis arachnacantha'' (syn. ''Lobivia arachnacantha'') is a species of

cactus A cactus (, or less commonly, cactus) is a member of the plant family Cactaceae, a family comprising about 127 genera with some 1750 known species of the order Caryophyllales. The word ''cactus'' derives, through Latin, from the Ancient Gree ...

in the genus ''

Echinopsis ''Echinopsis'' is a large genus of cacti native to South America, sometimes known as hedgehog cactus, sea-urchin cactus or Easter lily cactus. One small species, ''E. chamaecereus'', is known as the peanut cactus. The 128 species range from l ...

'', native to Bolivia. It has gained the

Royal Horticultural Society The Royal Horticultural Society (RHS), founded in 1804 as the Horticultural Society of London, is the UK's leading gardening charity. The RHS promotes horticulture through its five gardens at Wisley (Surrey), Hyde Hall (Essex), Harlow Carr (Nor ...

's Award of Garden Merit.

Subtaxa

The following subspecies are accepted: *''Echinopsis arachnacantha'' subsp. ''arachnacantha'' *''Echinopsis arachnacantha'' subsp. ''densiseta'' (Rausch) M.Lowry *''Echinopsis arachnacantha'' subsp. ''sulphurea'' (R.Vásquez) M.Lowry *''Echinopsis arachnacantha'' subsp. ''torrecillasensis'' (Cárdenas) M.Lowry

References

arachnacantha Endemic flora of Bolivia Plants described in 1974 {{Cactus-stub