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

Highslide JS
 

Distribution

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)

Soil-mixture

minerally, gravelly with sparse loam, without humus
   
Hamatocactus setispinus var. hamatus (Muehlenpfordt) Borg (1937)
 
Highslide JS
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Field number

GL154 - collected by Gary Loos

Habitat

USA
Texas

Description

initially 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

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
 
Description of "Kakteen von A bis Z" by Walter Haage with courtesy by Kakteen-Haage made available.

 

 

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