{ { Speciesbox
| image = Echinopsis haematantha1b.MW.jpg
| status =LC
| status_system = IUCN3.1
| status_ref =
| genus = Echinopsis
| species = haematantha
| authority = (Speg.) D.R. Hunt
|synonyms=
{ { collapsible list|
Echinocactus haematanthus
Lobivia haematantha
Echinocactus cachensis
Echinopsis albispina
Echinopsis amblayensis
Echinopsis amblayensis var. albispina
Echinopsis cachensis
Echinopsis densispina var. amblayensis
Echinopsis elongata
Echinopsis haematantha var. chorrillosensis
Echinopsis haematantha var. elongata { { au|(Backeb.) 1998}}Echinopsis haematantha var. hualfinensis Echinopsis haematantha var. kuehnrichii Echinopsis hualfinensis Hymenorebutia drijverana Hymenorebutia kuehnrichii Lobivia amblayensis Lobivia amblayensis var. albispina Lobivia chorillosensis Lobivia chorrillosensis Lobivia cincero Lobivia drijveriana Lobivia drijveriana var. astranthema Lobivia drijveriana var. aurantiaca Lobivia drijveriana var. nobilis Lobivia elongata Lobivia haematantha var. amblayensis Lobivia haematantha subvar. amblayensis Lobivia haematantha var. cachensis Lobivia haematantha subsp. chorrillosensis Lobivia haematantha var. chorrillosensis Lobivia haematantha subsp. chorrillosensis Lobivia haematantha subvar. chorrillosensis Lobivia haematantha f. drijveriana Lobivia haematantha var. drijveriana Lobivia haematantha var. elongata Lobivia haematantha subvar. elongata Lobivia haematantha var. fechseri Lobivia haematantha subvar. fechseri Lobivia haematantha var. hualfinensis Lobivia haematantha subvar. hualfinensis Lobivia haematantha var. jasimanensis Lobivia haematantha var. kuehnrichii Lobivia haematantha subsp. kuehnrichii Lobivia haematantha var. viridis Lobivia hualfinensis Lobivia hualfinensis var. fechseri Lobivia kuehnrichii Lobivia kuehnrichii var. antennifera Lobivia mirabunda }} }}Echinopsis haematantha, is a species of Echinopsis found in Argentina and Bolivia. DescriptionEchinopsis haematantha grows singly or branching, and then forms small groups, with a large carrot-like taproot. The flattened spherical to short cylindrical, olive green to brownish green to gray-green shoots reach heights of up to 12 centimeters with diameters of 5 to 8 centimeters. There are twelve to 15 low and narrow ribs arranged in a spiral. The circular areoles on them are white. Yellow to dark brown or black thorns emerge from them. The one to four unequal, strong central spines are often hooked and up to 6 centimeters long. The ten to twelve thin, needle-like marginal spines are interwoven. They are up to 1.2 centimeters long.
The short, funnel-shaped, yellow to orange to slightly purple flowers open during the day. They have a diameter of 3 to 4 centimeters. The spherical to egg-shaped, green to purple-brown fruits are semi-dry and tear open.
DistributionEchinopsis haematantha is widespread in the Argentine provinces of Salta, Tucumán and Catamarca at altitudes of 2000 to 3000 meters. Taxonomy The first description as Echinocactus haematanthus by Carlos Luis Spegazzini was published in 1905. The specific epithet haematantha is derived from the Greek words haima for 'blood' and anthos for 'flower' and refers to the dark red flowers of the species. David Richard Hunt placed the species in the genus Echinopsis in 1991. Another nomenclature synonym is Lobivia haematantha'' (Speg.) Britton & Rose (1922).