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1. The habitats (Category) ... like those of Mexico and southwestern US (Texas, New Mexico, Arizona), where Cactaceae like Mammillaria and Echinocereus generally predominate; some plants, for example Aylostera, Echinofossulocactus, ... 2. Astrophytum (Category) ... ripe quickly. The brown seeds are shiny and smooth, 2 to 4 mm in diameter, germinate readily and are generally dispersed by ants. Astrophytums are found in the southern part of Texas as well as in northern ... 3. ancistrocactus (Phocagallery / ancistrocactus) Habitat: Mexico, Texas. Description: globular, sometimes upright cylindrical, cacti with big areoles each of them bearing a central hooked spine; they may develop a taproot. The diurnal flowers are borne ... 4. ariocarpus (Phocagallery / ariocarpus) Habitat: Texas, New Mexico, Northern Mexico. Description: they have a short stem with hard, large tubercles and a fleshy taproot. The white, pink or purple flowers arise from the centre. They are adapted ... 5. astrophytum (Phocagallery / astrophytum) Habitat: Mexico, Texas. Description: cacti with globular but more often columnar stems which may have four to eight ribs (up to ten as the plants grow older) and be covered with a variable number of ... 6. caudiciforms (Phocagallery / caudiciformi) Habitat: Africa, Australia, Socotra, Central and South America, Mexico, Baja California, California, Arizona, Nevada, Colorado, New Mexico, Texas. Description: this is ... 7. epithelantha (Phocagallery / epithelantha) Habitat: from Texas to northern Mexico. Description: tiny, globular plants covered with short white spines. The diurnal flowers are borne at the centre of the apical crown during the summer. They were ... 8. escobaria (Phocagallery / escobaria) Habitat: desert regions of southwestern Texas and southern New Mexico. Description: the genus comprises mainly globular cacti with a clumping habit, with vertically furrowed tubercles like Coryphantha. ... 9. ferocactus (Phocagallery / ferocactus) Habitat: deserts of Mexico and southwestern United States: Texas, Arizona, California, New Mexico. Description: a genus of plants variable in size, with robust, often hooked and sometimes colourful spines. ... 10. lophophora (Phocagallery / lophophora) Habitat: Texas, south-east of United States, Mexico. Description: they have a globular, green, spineless stem with a fleshy taproot resembling a beetroot. Some species produce offsets from the base. ... 11. neolloydia (Phocagallery / neolloydia) Habitat: wildernesses of southern Texas and Chihuahua desert (north-east of Mexico), from 700 to 2400 metres (2300-7900 ft) of altitude. Description: small, globular plants that tend to become cylindrical ... 12. thelocactus (Phocagallery / thelocactus) Habitat: deserts of Mexico and Texas. Description: this diverse genus, still lacking defined boundaries, comprises many different plants whose most evident common characteristic is the dense spination. ... 13. Mappa di distribuzione delle cactacee (Vita delle piante/Gli ambienti) Negli U.S.A. . Ariocarpus: Texas Astrophytum: Texas Bergerocactus: California Carnegiea: California, Arizona Cereus: Indie occid., Hawai Coryphantha: Arizona, New Mexico, Texas Echinocactus: ... Sunday, 11 January 2009 14. The habitats (Category - French (Fr)) ... like those of Mexico and southwestern US (Texas, New Mexico, Arizona), where Cactaceae like Mammillaria and Echinocereus generally predominate; some plants, for example Aylostera, Echinofossulocactus, ... 15. Astrophytum (Category - Italian - Italy) ... ripe quickly. The brown seeds are shiny and smooth, 2 to 4 mm in diameter, germinate readily and are generally dispersed by ants. Astrophytums are found in the southern part of Texas as well as in northern ... 16. Distribution map of Cactaceae (The life of plants/The habitats - French (Fr)) U.S.A. Ariocarpus: Texas Astrophytum: Texas Bergerocactus: California Carnegiea: California, Arizona Cereus: West Indies., Hawai Coryphantha: Arizona, New Mexico, Texas Echinocactus: California, ... Sunday, 11 January 2009