Hamatocactus Britton & Rose (1922)

Hooked cactus
(Latin hamatus = hooked; Greek kaktos = thistle)
globular cactus
ribs deep gashed, around the areoles somewhat thicker; spines long and thin
central spine mostly hooked; buds with beautiful coloured scales
flowers funnel shaped, yellow or yellow with red center, flower tube is slim, with beautiful coloured scales
fruits large, berry-shaped, when ripe bursting at the base
seeds small, black

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USA - Texas, New Mexico
Mexico - Coahuila, Nuevo León, Tamaulipas, Querétaro
very warm steppes

Growth period

sunny, light and a warm location, some protection against full sun exposure
if the plants discolor reddish, then keep somewhat shade
this genus is somewhat sensitive to too much moisture, therefore only occasional
and not to many watering, watering only if the soil is complete dry
keep the root neck dray by coarse gravel

Winter period

bright and complete dry at 8–12°C (46–53°F)


minerally, gravelly with sparse loam, without humus
Hamatocactus sinuatus (A. Dietrich) Orcutt (1926)
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Habitat - Amistad Stausee,
Val Verde County, Texas, USA
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Texas - east of Devil River, San Patricio County
Coahuila - Nueva Rosita
Tamaulipas - Ciudad Victoria, Jaumave
Nuevo León - Monterrey, Cadereyta, brushlands at low elevations
in 1150–4270 ft (350–1300 m) altitude


to 11.8 in (30 cm) high and 7.9 in (20 cm) Ø
8–12 radial spines, thin, often bent
4 central spines, the lowermost very long and edged
flowers 2.6 in (6.5 cm) long, pure yellow
fruits oval, green

Flowering time

July–August in cultivation and habitat
3–4 years from seed


Echinocactus sinuatus A. Dietrich (1851)
Echinocactus setispinus
var. sinuatus (Dietrich) Poselger (1853)
Hamatocactus hamatacanthus var. sinuatus (A. Dietrich) Y. Ito (1952)
Ferocactus hamatacanthus var. sinuatus (A. Dietrich) L.D. Benson (1969)
Ferocactus hamatacanthus ssp. sinuatus (A. Dietrich) N. P. Taylor (1998)
Bisnaga hamatacantha ssp. sinuata (A. Dietrich) Doweld (1999)
CITES Appendix II
Description of "Kakteen von A bis Z" by Walter Haage with courtesy by Kakteen-Haage made available.
Picture 7 with courtesy by © Rob Romero, Tucson, Arizona made available.