Description: Usually simple
or rarely basally branched. This species reputedly grows almost
completely hidden below the soil (in habitat), and
is extremely hard to find
unless it is in bloom.
Stem: Globose, dull green, thick and growing mostly underground,
but the stem of the plant in cultivation is usually globular or ovoidal and
aerial. Dimension: 8-15 cm tall, 4-5 cm in diameter.
Ribs: 16 to 17, straight or spiralled;
Areoles: Oval filled, with grey wool in youth;
Radial spines: 4 to 7 (or more), flatly spreading, yellow to white
with black tips, straight, subulate, dagger‑shaped, up to 3 cm (or more)
long, though variable from plant to plant.;
Central spines: lacking.
Roots: Long, fat, tuberose taproot.
Flower: diurnal, scented, funnelform, yellow, pink, orange or
red, up to 4,5 cm long and in diameter
Fruits: Green, small , globose, semidry and dehiscent.
subspecies, varieties and forms:
- The ssp. pugionacantha
has reddish yellow flowers, 4,5 cm long, and is found in Argentina and
- The ssp. rossi has orange to reddish flowers and is endemic to
Lobivia pugionacantha (Rose &
Boed.) Backbg 1935
Nowadays regarded as:
Rose & Bodeker 1931
Origin: Southern Bolivia, northern Argentina
- Echinopsis stollenwerkiana
- Lobivia culpinensis F.
- Lobivia cornuta Rausch
- Lobivia salitrensis Rausch
- Lobivia versicolor Rausch
- Lobivia adpressispina F.
- Lobivia campicola F.
- Echinopsis rossii Boedeker
- Lobivia rossii
Boedeker ex Backeberg & F.M. Knuth 1935
- Echinopsis pugionacantha ssp rossi
G. Navarro 1996
It is a summer-growing species that offers no
cultivation difficulties. Water regularly in summer (but do not
over-water). It is rot prone, and should be planted in
a shallow pot. Like
most Echinopsis cultivated for their blossoms,
it needs a soil mixture that's
a little richer than for
the average cactus,
still with excellent drainage.
Keep rather dry in winter.
It is quite frost resistant if kept dry (hardy to -5°(-18°) C
Outside full sun or afternoon shade,
inside it needs bright light, and some direct sun.
directly after last frost, offsets (if
Photo of conspecific
taxa, varieties, forms and
cultivars of Lobivia (Echinopsis)
pugionacantha. (This taxon has lots of
synonyms (like most Lobivia), with several controversial varieties and