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・ Echinolittorina santelenae
・ Echinolittorina subnodosa
・ Echinolittorina sundaica
・ Echinolittorina tenuistriata
・ Echinolittorina tricincta
・ Echinolittorina tuberculata
・ Echinolittorina vermeiji
・ Echinolittorina vidua
・ Echinolittorina wallaceana
・ Echinolittorina ziczac
・ Echinomacrurus
・ Echinomacrurus occidentalis
・ Echinomastus
・ Echinomastus erectocentrus
・ Echinomastus johnsonii
Echinomastus mariposensis
・ Echinometra
・ Echinometra lucunter
・ Echinometra mathaei
・ Echinometra viridis
・ Echinometridae
・ Echinomyces
・ Echinomycin
・ Echinonyssus
・ Echinopedinidae
・ Echinopelta
・ Echinopelta fistulosa
・ Echinophacops
・ Echinophora sibthorpiana
・ Echinophoria


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Echinomastus mariposensis : ウィキペディア英語版
Echinomastus mariposensis

''Echinomastus mariposensis'' (syn. ''Neolloydia mariposensis'', ''Sclerocactus mariposensis'') is a rare species of cactus known by the common names Lloyd's fishhook cactus, golfball cactus, silver column cactus, and Mariposa cactus. It is native to a small section of territory straddling the border between Brewster County, Texas, in the United States and the state of Coahuila in Mexico. It has been federally listed as a threatened species in the United States since 1979.〔USFWS. (''E. mariposensis'' Recovery Plan. ) April 1990.〕
==Habitat==
This tiny cactus grows at about 30 sites in Texas and Coahuila, many of which are located within Big Bend National Park and the Black Gap Wildlife Management Area.〔(''E. mariposensis''. ) Center for Plant Conservation.〕〔(''E. mariposensis''. ) Texas Parks and Wildlife.〕 In Coahuila it has been observed near Cuatro Ciénegas and Monclova.〔 It is named for the Mariposa Mine, a mercury mine〔 in Texas, where it was first discovered.〔 It was described in 1945.〔 The plant grows in Chihuahuan Desert scrub amongst other plants such as beaked yucca (''Yucca rostrata''), creosote (''Larrea tridentata''), and lechuguilla (''Agave lechuguilla''), as well as many other cacti.〔 It grows in barren, exposed, rocky habitat with substrates of limestone; it does not occur in the adjacent parts of the habitat where the rock is gypsum, and the related ''Echinomastus warnockii'' fills its niche there.〔(''E. mariposensis''. ) Flora of North America.〕 This cactus may grow alongside the bunched cory cactus (''Coryphantha ramillosa''), another threatened cactus species.〔

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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