Cactaceae
Mammillaria polythele Mart.
Mammillaria polythele Mart.
Mammillaria polythele is a cylindrical native Mexican cactus of the genus Mammillaria with colored dark to blue green stems.
Mammillaria rekoi (Britton & Rose) Vaupel
Mammillaria rekoi (Britton & Rose) Vaupel
Mammillaria rekoi is a small cactus endemic to central and northern Oaxaca, Mexico, with pink to purple-pink flowers and red fruits.
Mammillaria vetula Mart.
Mammillaria vetula Mart.
Mammillaria vetula is a clumping Mexican cactus with two cultivated subspecies, one very common and one rare.
Mammillaria muehlenpfordtii C.F.Först.
Mammillaria muehlenpfordtii C.F.Först.
Mammillaria muehlenpfordtii is a clustering succulent native to central Mexican highlands, with spined warts, red flowers, and red fruits.
Mammillaria mystax Mart.
Mammillaria mystax Mart.
Mammillaria mystax is a Cactoideae cactus species endemic to three areas of Mexico.
Mammillaria petterssonii Hildm.
Mammillaria petterssonii Hildm.
Mammillaria petterssonii is a Mammillaria cactus native to Mexico that holds the RHS Award of Garden Merit.
Mammillaria gigantea Hildm. ex K.Schum.
Mammillaria gigantea Hildm. ex K.Schum.
Mammillaria gigantea is a small low-growing cactus native to mountainous areas of central Mexico.
Mammillaria albiflora (Werderm.) Backeb.
Mammillaria albiflora (Werderm.) Backeb.
Mammillaria albiflora is a Critically Endangered small Mexican cactus grown as an ornamental, threatened by illegal collecting.
Mammillaria nivosa Link ex Pfeiff.
Mammillaria nivosa Link ex Pfeiff.
Mammillaria nivosa Link ex Pfeiff. is a radially symmetrical spiny cactus that grows yellow flowers up to 25 cm tall.
Mammillaria heyderi subsp. meiacantha (Engelm.) D.R.Hunt
Mammillaria heyderi subsp. meiacantha (Engelm.) D.R.Hunt
Mammillaria heyderi, the Little Nipple cactus, is a small drought-resistant pincushion cactus native to Mexico and the southwestern US.
Mammillaria mercadensis Patoni
Mammillaria mercadensis Patoni
Mammillaria mercadensis is a small spiny cactus native to northwestern Mexico that grows in rocky desert and semi-desert habitats.
Coryphantha echinus (Engelm.) Britton & Rose
Coryphantha echinus (Engelm.) Britton & Rose
Coryphantha echinus is a North American cactus species with short-lived yellow flowers and several common names.
Coryphantha compacta (Engelm.) Britton & Rose
Coryphantha compacta (Engelm.) Britton & Rose
Coryphantha compacta is a small globular cactus native to northwestern Mexico, found in high elevation desert and dry scrub habitats.
Coryphantha delicata L.Bremer
Coryphantha delicata L.Bremer
Coryphantha delicata is a small endemic cactus species from northeastern Mexico that grows in semiarid habitats.
Coryphantha erecta (Lem. ex Pfeiff.) Lem.
Coryphantha erecta (Lem. ex Pfeiff.) Lem.
Coryphantha erecta is a clump-forming cactus native to limestone gravel slopes in three central Mexican states.
Coryphantha georgii Boed.
Coryphantha georgii Boed.
Coryphantha georgii Boed. is a small clump-forming or solitary cactus native to northeastern Mexico.
Coryphantha pycnacantha (Mart.) Lem.
Coryphantha pycnacantha (Mart.) Lem.
Coryphantha pycnacantha is an endangered cactus species endemic to central Mexico, growing on deep lava soils.
Sclerocactus wrightiae L.D.Benson
Sclerocactus wrightiae L.D.Benson
Sclerocactus wrightiae is an endangered cactus endemic to central Utah, growing on specific soil with intact cryptobiotic crust.
Sclerocactus glaucus (K.Schum.) L.D.Benson
Sclerocactus glaucus (K.Schum.) L.D.Benson
Sclerocactus glaucus, the Colorado hookless cactus, is a rare federally threatened cactus endemic to Colorado, U.S.A.
Sclerocactus mesae-verdae (Boissev. & C.Davidson) L.D.Benson
Sclerocactus mesae-verdae (Boissev. & C.Davidson) L.D.Benson
Sclerocactus mesae-verdae is a small columnar cactus native to the US Southwest that is officially classified as a threatened species.
Pediocactus bradyi L.D.Benson
Pediocactus bradyi L.D.Benson
Pediocactus bradyi is an endangered small globose cactus endemic to limited limestone gravel habitats in Coconino County, Arizona.
Pediocactus peeblesianus (Croizat) L.D.Benson
Pediocactus peeblesianus (Croizat) L.D.Benson
Pediocactus peeblesianus is a small low-growing cactus that grows in arid western North American habitats, currently threatened by drought.
Pediocactus sileri (Daul) L.D.Benson
Pediocactus sileri (Daul) L.D.Benson
Pediocactus sileri is a small gypsophilic cactus of the southwestern US, with ongoing threats and active conservation protection.
Astrophytum asterias (Zucc.) Lem.
Astrophytum asterias (Zucc.) Lem.
Astrophytum asterias is a small rare spineless cactus, widely cultivated as a popular ornamental houseplant.
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