Mammillaria


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Mammillaria

 

globular or short-cylindrical cacti. The stem is covered with tubercles that grow from the bases of the leaves. On top of the tubercles are areolae (adapted axillary buds), with tufts of hairs and thorns. The flowers and lateral shoots are borne in the axils of the tubercles. The flowers are usually small and grow in a wreath at the top of the stem. The fruits are berry like and ripen in the second year. There are more than 350 species (according to other sources, only about 200), found in the arid regions of Mexico, Venezuela, and Colombia. They grow on small hills or on mountains with elevations up to 2,800 m above sea level. Some species form large clumps. Many of these cacti are ornamentals; they are raised in greenhouses or as house plants. The plants are propagated from seeds and cuttings.

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Se llevo a cabo la recolecta de ejemplares de Mammillaria uncinata en sus areas de distribucion en municipios de Jalisco, Mexico (Cuadro 1).
Plantas conocidas con anterioridad solamente de San Luis Potosi y/o areas situadas mas al norte de este estado, como: Acleisanthes nana, Baccharis ramiflora, Crataegus rosei, Mammillaria hahniana, Mimosa similis, Mirabilis multiflora, Pinus durangensis, Polygala macradenia, Villadia patula, entre otras.
En la actualidad, especies con estructuras defensivas, como espinas en el caso de Cercidium praecox, Mammillaria columbiana var.
Mammillaria are fairly common cacti although there is plenty of varietion among varieties.
Y al lado de estas hay diminutas especies del genero Mammillaria, conocidas como biznaguitas, que tienen gran demanda como plantas de ornato.
Los generos con mayor numero de taxa son Coryphantha (24), Echinocereus (14), Mammillaria (15) y Turbinicarpus (15), asi como nueve generos exclusivos al DCH.
Soil characteristics have been found to affect seed germination of several cacti, like Carnegiea gigantea and Stenocereus thurberi (McDonough, 1964), Ferocactus histrix (Del Castillo, 1986), Mammillaria heyderi (Trejo-Hernandez and Garza-Castillo, 1993), Turbinicarpus polaskii, T.
Sin embargo de acuerdo a los principios del Codigo Internacional de Nomenclatura Botanica, debe usarse el nombre mas antiguo publicado efectivamente, por lo que el genero Mammillaria Haworth 1812 (tipo usado por Jussieu para la descripcion de la familia en 1789) se conserva frente a Cactus, el cual se constituye en un genero no valido.
CACTI are great fun to grow, whatever your age or gardening ability, and one of the most appealing is the Mammillaria type.
Seen here is a collection of Mammillaria which left to their own devices will grow into clumps.
Dentro de Cacteae es el segundo genero con mayor riqueza de especies, despues de Mammillaria.