Pincushion cactus (Mammillaria guelzowiana)
CRITICALLY ENDANGERED 
Endemic to hot deserts and grassy mountain tops in an area of about 6 km² west of Nazas, Durango, north-western Mexico, this species is threatened by illegal collecting and temperature extremes. It had an estimated population size of more than 10,000 plants in 1994. A subsequent visit in 2000 revealed a population reduced by more than 95% to less than 500, apparently largely a result of the 1997 freeze on Mexico’s altiplano. New plants are propagated from seed sown in the natural habitat.  More about this species: Encyclopedia of Life  (photo: Michael Wolf; via: Wikimedia Commons)

Pincushion cactus (Mammillaria guelzowiana)

CRITICALLY ENDANGERED

Endemic to hot deserts and grassy mountain tops in an area of about 6 km² west of Nazas, Durango, north-western Mexico, this species is threatened by illegal collecting and temperature extremes. It had an estimated population size of more than 10,000 plants in 1994. A subsequent visit in 2000 revealed a population reduced by more than 95% to less than 500, apparently largely a result of the 1997 freeze on Mexico’s altiplano. New plants are propagated from seed sown in the natural habitat.

More about this species: Encyclopedia of Life

(photo: Michael Wolf; via: Wikimedia Commons)

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