Scientific Name
Lobivia mamillosa (Gürke) Schlumpb.
Synonym(s)
Echinopsis mamillosa
Scientific Classification
Family: Cactaceae
Subfamily: Cactoideae
Tribe: Cereeae
Subtribe: Trichocereinae
Genus: Lobivia
Etymology
The specific epithet "mamillosa" (pronounced "mam-il-LOH-suh") means "full of nipples" and refers to the mammillate ribs of this species.
Origin
Lobivia mamillosa is native to Argentina (Jujuy, Salta) and Bolivia (Chuquisaca, Tarija).
Description
Lobivia mamillosa, formerly known as Echinopsis mamillosa, is a small cactus with a solitary, spherical stem that has 13 to 17 deep ribs divided into tubercles. The stem can grow up to 12 inches (30 cm) tall and 10 inches (25 cm) in diameter. Each tubercle has a rounded areole at its tip, which bears a cluster of 1 to 4 central and 8 to 12 radial spines that are yellowish with a brown tip. The areoles are spaces up to 0.5 inches (1.2 cm) apart.
In summer, Lobivia mamillosa produces large flowers that can be white with rose tips, purple, or deep red. They open at night and last about 24 hours, reaching a length of up to 7.2 inches (18 cm) and a diameter of 3.2 inches (8 cm).
Forms and Varieties of Lobivia mamillosa
Hardiness
USDA hardiness zone 8b to 11b: from 15°F (-9.4°C) to 50°F (10°C).
How to Grow and Care
If you can grow cacti and succulents successfully, you can likely grow the Echinopsis species without too much trouble. Like many cacti, they prefer a drying period between waterings, even when slightly wilted. When you water, however, you should water deeply. The plant will noticeably plump up. The cactus mustn't be exposed to prolonged dampness or standing water. Never let your cactus sit in a dish of water. Lastly, fertilize during the growing season for the best results.
Echinopsis can be easily rooted from offsets that tend to cluster around the base of the mother plant. Cut offsets close to the stem, at the narrowest possible place. When rooting cacti from cuttings, let the fresh cutting dry out slightly on a paper towel, and cut the cacti at the narrowest place possible. After a few days to a few weeks, depending on the size of the cut surface, the cut surface should have dried out and formed a callous or slightly rough opening. Once the callous has formed, place the cutting in a rooting mixture of fast-draining cacti soil.
See more at How to Grow and Care for Echinopsis.
Links
- Back to genus Lobivia
- Succupedia: Browse succulents by Scientific Name, Common Name, Genus, Family, USDA Hardiness Zone, Origin, or cacti by Genus
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