Vriesea gigantea Gaudich.
Order: Poale
Family: Bromeliaceae
Subfamily: Tillandsioideae
Gender: Vriesea
Species: V. gigantea
Vriesea gigantea is a species of Vriesea . It is a most spectacular bromeliads Wilson Botanical Garden, and is also a valuable plant is so difficult for your collection. Forms a rosette of broad leaves. The leaves appear thin and steely, green-white to slightly bluish green, thanks to a white film on the leaves. As the plant grows to its large size and mature species in central and within the emerging leaves arises in the young leaves a mottled pattern, a sign that the flowering scape soon emerge. It reaches a height of one and a half to two meters, the yellow flowers are tubular. After flowering, the mature plant will decline over the course of six to twelve months, resulting in small plants that develop at its base. These plants will replace the dying parent plant and become large plants with perpetuating their species. (1)
This species is endemic to Brazil of an epiphytic bromeliad of Mata (Forest) Atlantic in Brazil. The Atlantic Forest is one of the most important tropical forests in the world, being considered in terms of conservation priority due to its degree of threat and megabiodiversity. Biosphere Reserve of the Atlantic has 1.7 million hectares, were declared World Heritage World by UNESCO in 1999 . (2) The so-called Southeast Reserves in the states of Sao Paulo and Parana have the most consistent areas of Atlantic Forest in Brazil.
In this forest, Bromeliaceae is one of the most important taxonomic groups due to the high degree of endemism and high ecological value, mainly from its interaction with wildlife. Wild populations have been reduced by anthropogenic disturbance as habitat destruction and harvesting of predators.
A list of taxa of Bromeliaceae realize the great diversity of species occurring in The Atlantic Forest in Brazil . There were 31 genera, 803 species and 150 infraspecific taxa. Andrea gender, Canistropsis, Canistrum, Edmundoa, Fernseea, Lymania, Nidularium, Porter, and Wittrockia Quesnelia are endemic to the area and Vriesea (166 spp.) Aechmea (136 spp.) And Neoregelia (97 spp.) Are the most diverse .
Others worth mentioning are; Alcantarea, Cryptanthus, Neoregelia Orthophytum, which are not exclusive to the Atlantic, however in this area has its center of diversity. States in the Southeast Region added south of Bay are home to greater species richness. As for the threat situation, we found that 338 taxa of Bromeliaceae quoted in the official lists of endangered species. Biodiversity corridors prove to be very relevant for the conservation of the family, because they host large numbers of endemic and endangered.
The three corridors of the Atlantic Forest are Central, Northeast and Serra do Mar , which together have 671 Bromeliaceae species, which corresponds to 83.6% of total species recorded in the area. The richer the Central Corridor , with 396 species (49.3%), followed by Serra do Mar , 369 (46%), and Northeast Corridor, which has the lowest diversity (86 species - 10, 7%) (3).
Vriesea gigantea grows under indirect light, even outdoors where it prefers shade and frost-free environment. No need soil for nutrition, and should be supported in a sand-based material or piedrilla or a place full of peat and coarse bark chips to facilitate that the drainage work properly. It is a plant that lends itself to create a focal point in the tropical garden of shade under large trees or container. (1)
Vriesea platynema variegata
platynema Vriesea variegata
Photo Guillermo Chaves platynema a Botanical Garden Vriesia Robert and Katherine Wilson, San Vito de Coto Brus, Costa Rica.
platynema Vriesea is a species of V riesea originated in Bolivia, Brazil and Venezuela. Vriesea is a genus named after Willem Hendrik de Vriese , German physician and botanist (1806-1862). It is a large genus of flowering plants belonging to the family Bromeliaceae, subfamily Tillandsioideae , contains about 200 species in Central and South America. Vriesea Most are epiphytic and grow without needing ground floor so they have no root, they develop a root type that makes them adhere to the branches of trees or rocks, but these roots does not serve to provide any nutrients. Obtains all the nutrients through the "tank" with water in the center that is formed between the rosette of leaves.
Photo Guillermo Chaves platynema a Botanical Garden Vriesia Robert and Katherine Wilson, San Vito de Coto Brus, Costa Rica.
This is a marvel of bromeliads and one of the most beautiful I've seen their colorful hues. The leaves are large, dark green with a thin striated bands white stripes. The color purple at the tips of the leaves, extending to a purple shading underneath, making this particular one of the most beautiful members of the group. The flower scape can reach 50 cm high with numerous purple-red bracts with yellow petals. These tropical plants are able to accommodate a variety of insect fauna. In nature, tree frogs can develop their life cycle in a bromeliad.
Culture: vriesias all require very good drainage, partial shade and a place in the garden where not stick too cold breezes. The substrate may be the same orchid, moss or coconut fiber. Can be integrated into a tree if it takes some concavity. Water should provide moderately to do with water spray frequently if the weather is dry and should ensure that the central rosette is always full of water.
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