Origin and Habitat: Native to Northern Bolivia and the Andean plateaus and slopes of Southern Peru.

• Echinopsis pugionacantha subs. rossii (Boed.) G.Navarro
• Echinopsis rossii Boed.
• Lobivia pugionacantha var. rossii (Boed.) Rausch
• Lobivia rossii (Boed.) Boed. ex Backeb. & F.M.Knuth

• Echinopsis pugionacantha Rose & Boed.
• Lobivia pugionacantha (Rose & Boed.) Backeb.
• Lobivia pugionacantha var. adpressispina (F.Ritter) J.Ullmann
• Lobivia adpressispina var. F.Ritter F.Ritter
• Lobivia pugionacantha var. campicola (F.Ritter) J.Ullmann
• Lobivia campicola F.Ritter
• Lobivia pugionacantha var. cornuta (Rausch) Rausch
• Lobivia cornuta Rausch
• Lobivia pugionacantha var. corrugata Rausch
• Lobivia pugionacantha var. culpinensis (F.Ritter) Rausch
• Lobivia culpinensis F.Ritter
• Lobivia pugionacantha var. flaviflora (Backeb.)
• Lobivia pugionacantha var. salitrensis (Rausch) Rausch
• Lobivia salitrensis Rausch
• Lobivia pugionacantha var. versicolor (Rausch) Rausch
• Lobivia versicolor Rausch
• Lobivia salitrensis var. flexuosa Rausch

• Echinopsis pugionacantha subs. haemantha (Rausch) M.Lowry
• Lobivia pugionacantha var. haemantha Rausch

• Echinopsis pugionacantha subs. rossii (Boed.) G.Navarro
• Echinopsis rossii Boed.
• Lobivia pugionacantha var. rossii (Boed.) Rausch
• Lobivia rossii (Boed.) Boed. ex Backeb. & F.M.Knuth
• Echinopsis stollenwerkiana Boed.
• Lobivia pugionacantha var. stollenwerkiana (Boed.) J.Ullmann
• Lobivia rossii var. stollenwerkiana (Boed.) Backeb.
• Lobivia stollenwerkiana Boed.
• Lobivia rossii var. bustilloensis F.Ritter
• Lobivia rossii var. carminata Backeb.
• Lobivia rossii var. salmonea Backeb.
• Lobivia rossii var. sanguinea Backeb.
• Lobivia rossii var. sayariensis F.Ritter

Description: Echinopsis pugionacanthaSN|16609]]SN|16609]] subs. rossii is a pretty little species, with a low thick flat to cylindrical stem up to 7 cm in diameter. Felted areoles line the edges of 25 to 30 ribs.
Habit: Usually with solitary stem or slowly ramifying from the base to form clusters, size depending on the clone.
Spines: 4-7 or more, of variable length, the lower one are shorter, whitish or reddish.
Flowers: orange or reddish with a usual clearer centre, approx. 60 cm long, 5 cm in diameter.
Blooming season: Blooms are produced in spring and remain open for about three days.
Roots: tap root.

Notes: This plant belogs to the Lobivia pentlandi group that is is a complex that comprises many different varieties, forms and ± similar related species.

Bibliography: Major references and further lectures
1) Lowry, M. & Demaio, P. 2013. Echinopsis pugionacantha. The IUCN Red List of Threatened Species. Version 2015.1. <www.iucnredlist.org>. Downloaded on 19 June 2015.
2) David R Hunt; Nigel P Taylor; Graham Charles; International Cactaceae Systematics Group. "The New Cactus Lexicon" dh books, 2006
3) Edward Anderson “The Cactus family” Timber Press, Incorporated, 2001
4) James Cullen, Sabina G. Knees, H. Suzanne Cubey "The European Garden Flora Flowering Plants: A Manual for the Identification of Plants Cultivated in Europe, Both Out-of-Doors and Under Glass" Cambridge University Press, 11/Aug/2011

Cultivation and Propagation: It is a summer grower species that offers no cultivation difficulties. Water regularly in summer (but do not over-water ) Needs a large pot to accommodate a large root system. Use a very draining and porous substrate, since it's natural habitat is in volcanic soil, it has adapted to more acidic conditions; keep rather dry in winter.
It is quite frost resistant if kept dry (hardy to -5° C) Outside full sun or afternoon shade, inside needs bright light, and some direct sun.
Propagation: Propagate by seed or shoots.