Plowmanianthus

Plowmanianthus Faden & C.R.Hardy is a genus of plants with 5 species and 2 subspecies in the family Commelinaceae (the spiderwort and dayflower family). The genus is distributed from Panama to Amazonian Peru and Brazil.^[1]

Systematics & Distributions

Plowmanianthus is a member of the subtribe Dichorisandrinae of the tribe Tradescantieae of the flowering plant family Commelinaceae. It has 5 species and 2 subspecies, all of which were described with the circumscription of the genus itself by Hardy and Faden (2004). Proceeding from the north to south and southeast of the genus's distribution, the taxa are as follows.

• Plowmanianthus dressleri is endemic to Panama, west of the Canal Zone.
• Plowmanianthus panamensis is endemic to Panama, east of the Canal Zone.
• Plowmanianthus grandifolius is native to Amazonian Ecuador, northern Amazonian Peru, and western Brazil. It consists of two subspecies.
  • P. grandifolius ssp. grandifolius is native to northern Amazonian Peru and western Brazil;
  • P. grandifolius ssp. robustus C.R.Hardy & Faden is native to Amazonian Ecuador and northern Amazonian Peru.
• Plowmanianthus peruvianaus is native to northern Amazonian Peru.
• Plowmanianthus perforans is native to southern Amazonian Peru.

Taxonomy

The genus is named in honor of Timothy Plowman (1944–1989), an American ethnobotanist best known for his intensive work over the course of 15 years on the genus Erythroxylum, and the cultivated coca species in particular.^[2] It was first described and published in Syst. Bot. Vol.29 on page 316 in 2004.^[1]

Morphology

Rosette, typically unbranched herbs with somewhat succulent, strap-shaped leaves. In the wild, plants grow on the floor of primary rainforests, shallowly rooted in the humus-rich and leaf-litter layers.

Plowmanianthus resembles its close relative, the epiphytic genus Cochliostema, but is smaller (its leaves reach only to ca. 30 cm in length) and is not epiphytic. Its flowers are also much smaller, lack the spirally coiled anthers of Cochliostema, and are usually cleistogamous (i.e., they usually never open).

References

Plowmanianthus es un género de plantas con flores^[1]​ de la familia Commelinaceae. Es originario de América tropical. Se distribuye desde Panamá a Perú en el Amazonas y Brasil. Comprende 5 especies descritas y aceptadas.^[2]​

Descripción

Forma una roseta, generalmente de hierbas no ramificados un poco suculenta, las hojas tienen forma de cinta. En la naturaleza, las plantas crecen en el suelo de los bosques primarios ricos en humus, superficialmente sus raíces y hojas están cubiertas por la hojarasca.

Plowmanianthus se parece a su pariente cercano, el género de epífitas Cochliostema, pero es más pequeño (sus hojas llegan sólo a medir unos 30 cm de longitud) y no es epífita. Sus flores son también mucho más pequeñas.

Taxonomía

El género fue descrito por Faden & C.R.Hardy y publicado en Systematic Botany 29(2): 316–318. 2004.^[3]​ La especie tipo es: Plowmanianthus perforans Faden & C.R.Hardy

Especies aceptadas

A continuación se brinda un listado de las especies del género Plowmanianthus aceptadas hasta noviembre de 2013, ordenadas alfabéticamente. Para cada una se indica el nombre binomial seguido del autor, abreviado según las convenciones y usos.

• Plowmanianthus dressleri Faden & C.R.Hardy
• Plowmanianthus grandifolius Faden & C.R.Hardy
• Plowmanianthus panamensis Faden & C.R.Hardy
• Plowmanianthus perforans Faden & C.R.Hardy
• Plowmanianthus peruvianus C.R.Hardy & Faden

Referencias

Plowmanianthus là một chi thực vật có hoa trong họ Commelinaceae.^[1]

Chú thích

Liên kết ngoài

• Phương tiện liên quan tới Plowmanianthus tại Wikimedia Commons
• Dữ liệu liên quan tới Plowmanianthus tại Wikispecies

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