''Ferocactus glaucescens'', the

glaucous ''Glaucous'' (, ) is used to describe the pale grey or bluish-green appearance of the surfaces of some plants, as well as in the names of birds, such as the glaucous gull (''Larus hyperboreus''), glaucous-winged gull (''Larus glaucescens''), g ...

barrel cactus, is a species of flowering plant in the family Cactaceae, native to the limestone hills of Hidalgo, endemic to México. It is a spherical or cylindrical cactus growing to in diameter, with long yellow spines and yellow flowers in summer. In cultivation in temperate regions it must be grown under glass. It has gained the Royal Horticultural Society's

Award of Garden Merit The Award of Garden Merit (AGM) is a long-established annual award for plants by the British Royal Horticultural Society (RHS). It is based on assessment of the plants' performance under UK growing conditions. History The Award of Garden Merit ...

. There is a spineless

form Form is the shape, visual appearance, or configuration of an object. In a wider sense, the form is the way something happens. Form also refers to: * Form (document), a document (printed or electronic) with spaces in which to write or enter dat ...

, ''Ferocactus glaucescens ''forma'' nuda'' (inermis).''Ferocactus glaucescens forma nuda'' (inermis)
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Synonyms

References

External links

at Cactus Art nursery glaucescens Cacti of Mexico Endemic flora of Mexico Flora of Hidalgo (state) {{cactus-stub