Sumamsiyo — Gymnocalycium mihanovichii Clone Profile

Sumamsiyo is a sharply sculpted own-root Gymnocalycium mihanovichii with saturated yellow variegation poured across dark green ribs like molten lacquer.
Sumamsiyo stands out through contrast and structure. The body is deep green, broken by bold yellow variegation that gathers in broad flashes and irregular bands across the ribs, with occasional softer transitions where green feathers back into the yellow. In this clone, the color is not just surface decoration—it amplifies the architecture, catching on every angle and making the rib edges read brighter, steeper, and more dramatic. The plant itself is compact and strongly geometric, with pronounced, high-shouldered ribs that rise into angular points and give the crown a star-cut silhouette from above. Fine, short coppery-brown spines emerge sparsely from small white areoles, adding a dry, delicate counterpoint to the glossy-looking variegation. Sourced from Boonsamai through Wikki in Thailand, this named clone is presented on its own roots, with a look that feels especially crisp, graphic, and collector-forward.
Clone Characteristics
- Body color: Deep green with bright yellow variegation and slight peach-pink blush near some lower rib edges.
- Variegation: Yes
- Variegation pattern: Bold yellow sectoral and marbled variegation in irregular bands and patches across the ribs.
- Ribs: Pronounced, angular ribs with high, pointed shoulders and a strongly sculpted, star-like crown.
- Spines: Short, fine, sparse coppery-brown spines emerging from small white areoles.
- Growth form: Compact solitary globose plant with a strongly geometric crown; own-root.
- Distinctive traits: Sharp, architectural rib form paired with saturated yellow-on-deep-green contrast and a crisp star-shaped top view.
- Root status: own_root
Origin & Provenance
- Source nursery: Boonsamai
- Source person: Wikki
- Source country: Thailand
- Acquired date: 2026-05-04
