Escobaria Britton & Rose (1923)

(Cochiseia, Escobesseya, Escocoryphantha, Fobea, Neobesseya)
named after the brothers Rómulo and Numa Escobar from Mexico City and Juárez, to honor their work,
tubercle cactus, globular to cylindrical, small, with a furrow on the tubercles, clumping
radial spines mostly bristly, white, yellow or with a dark tip
central spine absent or only somewhat stronger and darker
flowers small at the apex, white, yellow, pink or purple
fruits red; seeds black

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northern to central Mexico
warm arid areas

Growth period

full sun exposure and a warm location, the hottest and sunniest spot is the best, only then will they blooming
somewhat sensitive to too moisture, but constant slightly moisture, a watering rest in high summer is recommendable
keep the root neck dry
generate humidity by spraying in the evening hours

Winter period

dry and bright at a minimum of 39–50°F (4–10°C)


very permeable to water, minerally, gritty and gravelly
Escobaria missouriensis ssp. navajoensis Hochstaetter (1996)
Habitat - near Woodruff,
Navajo County, Arizona, USA
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Arizona - Navajo County, southern of Holbrook

in 5200–5900 ft (1600–1800 m) altitude


simple, small, globular, 0.4–0.6 (1.2) in (1-1.5 (3) cm) high, 0.4–0.6 (1-1.5 cm) Ø, dark green
tubercles pointed, cone-shaped only 2 mm long
areoles white wooly
6-8 radial spines, irregular spreaded, 2-3 (4) mm long, white, in age turn gray
0–(seldom 1) central spine
flowers 0.4 in (1 cm) long, 0.8–1.2 in (2-3 cm) Ø, funnelform, yellow
sepals circular to tapered, yellow with broad, red-brown central stripe
petals yellow with thin, red-brown central stripe
fruits 3 mm Ø, red
seeds black, shiny
Synonyms Escobaria missouriensis ssp. missouriensis -
CITES Appendix II
Pictures 1 and 2 with courtesy by © Rob Romero, Tucson, Arizona made available.
Pictures 3 and 4 with courtesy by © John Durham, Tucson, Arizona made available.