Arthrocereus glaziovii
| Arthrocereus glaziovii | |
|---|---|
| File:Arthrocereus glaziovii.jpg | |
| Kingdom | Plantae |
| Family | Cactaceae |
| Subfamily | Cactoideae |
| Tribe | Cereeae |
| SubTribe | Trichocereinae |
| Genus | Arthrocereus |
| Species | Arthrocereus glaziovii |
| Notes | Taxonomy follows Joël Lodé (2015). |
Description
Arthrocereus glaziovii is a slender, columnar cactus species native to Brazil. Plants are usually solitary or weakly branching from the base, forming small clumps with age.
Stems are cylindrical, green to bluish-green, relatively thin, with low and inconspicuous ribs. Areoles are small and closely spaced, bearing numerous fine, bristle-like radial spines. Central spines are usually absent or very reduced.
Flowers are nocturnal, subapical, and tubular to funnel-shaped, typically white to pale pink. The floral tube is elongated and bears scales with hairs and bristles. Fruits are spherical, indehiscent, and retain dried floral remains.
Distribution
- Brazil – Minas Gerais, Mato Grosso
Occurs in dry savannas and rocky habitats, often on well-drained, mineral-rich soils, including ferruginous substrates. Typically found at elevations between 450 and 1500 m.
Taxonomy
According to Joël Lodé, this species is placed in the genus Arthrocereus.
Following a proposal by N. Taylor, Arthrocereus glaziovii was designated as the neotype of the genus to stabilize its taxonomic application.
📚 Taxonomy note: Taxonomic placement follows the system of Joël Lodé (2015–2019).
Species within the genus
- Arthrocereus glaziovii
- Arthrocereus melanurus
- Arthrocereus melanurus subsp. magnus
- Arthrocereus melanurus subsp. estevesii
- Arthrocereus rondonianus
- Arthrocereus spinosissimus
Synonyms
The following name has been historically applied to this species:
Notes
- Serves as the nomenclatural type (neotype) of the genus Arthrocereus.
- Differs from related genera such as Echinopsis by its slender habit and indehiscent fruits.
- Adapted to nutrient-poor, rocky environments typical of Brazilian savannas.
Cultivation
This species requires careful cultivation:
- very well-draining mineral substrate
- bright light, but protection from extreme midday heat
- moderate watering during active growth
- keep dry in winter; sensitive to excess moisture
