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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Distribution |
USA - Texas, New Mexico
Mexico - Coahuila, Nuevo León, Tamaulipas, Querétaro
very warm steppes
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Growth period |
sunny, light and warm location, some protection against full sun
if the plants discolor reddish, then somewhat shade
this genus is somewhat sensitive to moisture, therefore only occasional
and not to many watering, always the soil let drying
keep dry the root neck by coarse gravel
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Winter period |
light and complete dry at 46–53 F (8–12°C) |
Substrat |
minerally, gravelly with sparse loam, without humus |
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| Hamatocactus setispinus var. hamatus (Muehlenpfordt) Borg (1937) |
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Field number |
GL154 - collected by Gary Loos |
Habitat |
USA
Texas - San Antonio
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Description |
Bristly spiny hooked Hamatocactus
first globular, 3.1–4.7 in (8–12 cm) Ø, later elongated, to 5.9 in (15 cm) high, fresh green
ribs circa 13, slim edged, occasionally also wavy
areoles white
12–15 radial spines, 0.2–1.5 in (0.5–4 cm) long, radially, thin subulate, upper brown, lower white
1(–3) central spine, somewhat longer, hooked, dark brown, tip lighter
flowers to 2.7 in (7 cm) long, silky glossy yellow with red center
fruits to 0.7 in (1.8 cm) Ø, globular, red brown to coral-red
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Synonyms |
Echinocactus hamatus Muehlenpfordt (1848)
Echinocactus setispinus var. hamatus (Muehlenpfordt) Engelmann (1850)
Echinocactus setispinus f. hamatus (Muehlenpfordt) Schelle (1907)
Thelocactus setispinus var. hamatus (Muehlenpfordt) Pilbeam (1996)
Thelocactus setispinus (Engelmann) E. F. Anderson (1987) |
| CITES |
Appendix II |
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