Origin and Habitat: Tribe Cacteae, Subtribe Echinocactinae
Origin: Mexico (Hidalgo)

• Stenocactus sulphureus (A.Dietr.) Bravo
• Echinocactus sulphureus A.Dietr.
• Echinofossulocactus sulphureus (A.Dietr.) Y.Itô

Description: Plants solitary, very spiny globose to subglobose,
Stem: Light green, 7-10 cm in diameter, depressed at the apex.
Ribs: Numerous, 26-40, thin, undulating with only few areoles.
Central spines: 1, erect, up to 5 cm long.
Radial spines: 7-8, white or yellowish with brownish tip, becoming grayish white, awl shaped, to 2.5 cm long.
Flowers: Small , funnelform, typically sulfur yellow but also pinkish-white with darker midribs, to 2.5 cm long and 3.8 cm in diameter; floral tubes long.
Blooming season: Spring to late summer and last 3-4 days.
Remarks: The plants found in in cultivation are quite variable for spine size, ribs number and colour of the flowers. Salm-Dyck say that it is closely related to Stenocactus anfractuosusSN|6195]]SN|6195]].

Cultivation and Propagation: Easy to to care and flower. It needs regular cacti soil with good drainage.
Propagation: Seeds (usually) Exposure: It likes strong sunshine but is tolerant and do well with light shade during the hot Summer months, allow to dry between watering. It should not be watered at all in winter. Frost Tolerance: does not tolerate intense or prolonged cold (hardy to -5°C if kept dry)