''Lobivia arachnacantha'' is a species of

cactus A cactus (: cacti, cactuses, or less commonly, cactus) is a member of the plant family Cactaceae (), a family of the order Caryophyllales comprising about 127 genera with some 1,750 known species. The word ''cactus'' derives, through Latin, ...

in the genus ''

Lobivia ''Lobivia'' is a genus of Cactus, cacti native species, native to South America from Bolivia, Peru to northwestern Argentina and Northern Chile. Species Species of the genus ''Lobivia'' according to Plants of the World Online : References ...

'', native to Bolivia.

Description

''Lobivia arachnacantha'' typically grows in clusters with flattened to spherical stems that are dark green and feature around 14 weakly notched ribs. The areoles on these stems bear 9-15 radial spines measuring 5 mm in length, which can range from pale to dark brown or yellowish-brown, sometimes accompanied by a 1.5 mm long black spine. Its flowers are approximately 5 cm wide and are supported by a slender floral tube that is about 5 cm long.

Subspecies

The following varieties are accepted:

Distribution

Plants are found in Bolivia, in the departments of Santa Cruz, Chuquisaca, and

Cochabamba Cochabamba (; ) is a city and municipality in central Bolivia in a valley in the Andes mountain range. It is the capital (political), capital of the Cochabamba Department and the list of cities in Bolivia, fourth largest city in Bolivia, with ...

, as well as in

Salta Salta () is the capital and largest city in the Provinces of Argentina, Argentine province of Salta Province, the same name. With a population of 618,375 according to the 2010 census, it is also the List of cities in Argentina, 7th most-populous ...

Argentina Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...

. It grows at elevations between 1800 and 2600 meters. This species grows on stony hills in places with reliable summer rainfall.

Taxonomy

As its synonym ''Echinopsis arachnacantha'' 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 ...

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

References

External links

* * {{Taxonbar, from1=Q15320296, from2=Q15314401 arachnacantha Endemic flora of Bolivia Plants described in 1956