Neoblechnum is a genus of ferns in the family Blechnaceae, subfamily Blechnoideae, with a single species Neoblechnum brasiliense, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I).[1] The genus is accepted in a 2016 classification of the family Blechnaceae,[3] but other sources sink it into a very broadly defined Blechnum, equivalent to the whole of the PPG I subfamily;[4] the species is then known as Blechnum brasiliense. It is called Brazilian dwarf tree fern, red Brazilian tree fern, and red dwarf tree fern.[5][6]
The erect rhizome of Neoblechnum brasiliense forms a thin stipe-stubbed trunk up to 30 centimetres (12 in) in height. The new foliage is a striking deep red color. As the fronds mature it turns to a glossy green.[7] On some selections, the new fronds emerge a pinkish-red.
The fern is native to the warm and humid subtropical forests of South America.[7]
Habitats include:[5]
Neoblechnum brasiliense is cultivated as an ornamental plant.[7] In cultivation in the UK (under the synonym Blechnum brasiliense) it has gained the Royal Horticultural Society's Award of Garden Merit.[8] As it will not tolerate temperatures below 15 °C (59 °F) it must be grown under glass all year in temperate regions.
Named cultivars include:
New red fronds emerging, Jardin des Plantes conservatory
Specimen in the United States Botanic Garden conservatory
Neoblechnum is a genus of ferns in the family Blechnaceae, subfamily Blechnoideae, with a single species Neoblechnum brasiliense, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I). The genus is accepted in a 2016 classification of the family Blechnaceae, but other sources sink it into a very broadly defined Blechnum, equivalent to the whole of the PPG I subfamily; the species is then known as Blechnum brasiliense. It is called Brazilian dwarf tree fern, red Brazilian tree fern, and red dwarf tree fern.
Blechnum brasiliense es una especie de helecho perteneciente a la familia Blechnaceae. Es originaria de Sudamérica.
Es un helecho con rizoma erecto, no estolonífero, las escamas de 1-2 x 0.1-0.3 mm, lineares a lanceoladas, concoloras, pardo oscuro a negras, enteras; hojas estériles y fértiles monomorfas; pecíolo de 2-12 cm, pardo o negro en la base; lámina 50-120 x 20-40 cm, pinnatisecta o 1-pinnada basalmente, glabra, atenuada gradualmente hacia la base, el ápice pinnatífido; yemas ausentes; pinnas 30-50 pares, 8-22 x 1-2.2 cm, ascendentes, no involutas, serradas, la base anchamente adnata, sursumcurrentes, las basales auriculiformes, obtusas; raquis y costas pajizos a pardo claro, glabros; aeróforos ausentes.[1]
Se encuentra en matorrales pantanosos a una altitud de 1200-1500 metros, en Guatemala, Colombia, Venezuela, Ecuador, Perú, Bolivia, Brasil, Paraguay, Uruguay y Argentina.
Blechnum brasiliense fue descrita por Nicaise Augustin Desvaux y publicado en Der Gesellschaft Naturforschender Freunde zu Berlin Magazin für die neuesten Entdeckungen in der Gesammten Naturkunde 5: 330. 1811.[1]
Blechnum brasiliense es una especie de helecho perteneciente a la familia Blechnaceae. Es originaria de Sudamérica.
Detalle de las frondas