Oroya
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Oroya is a genus of plants from the cactus family(Cactaceae). The botanical name of the genus is derived from the place where the first plants were found, the Peruvian town of La Oroya .
description
The species of the genus Oroya , which are usually single, but sometimes also have many shoots, have tuberous roots . Their flat-spherical or pressed spherical to short-cylindrical shoots have many ribs that sometimes form low warts . On them sit long, narrow areoles from which 1 to 6 central spines and several comb-shaped arranged radial spines arise.
The bell- to funnel-shaped flowers are red to pink to yellow and often form a flower ring. Your flower tube is very short and covered with small scales. The areoles of the flower cup and flower tube are a bit woolly.
The more or less spherical, slightly fleshy fruits are yellow or red, covered with small scales and have a persistent flower remnant. They contain helmet-shaped, reddish-brown seeds .
Systematics and distribution
The genus Oroya is common in the Peruvian Andes . The first plants were collected by August Weberbauer near La Oroya . Karl Moritz Schumann described this in 1903 as Echinocactus peruvianus . In their first description of the genus, Nathaniel Lord Britton and Joseph Nelson Rose put this as the only species in their newly established genus in 1922. The type species of the genus is therefore Echinocactus peruvianus .
The genus includes the two species:
- Oroya borchersii (Boed.) Backeb.
- Oroya peruviana (K.Schum.) Britton & Rose
proof
literature
- Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 485-486 .
- NL Britton , JN Rose : The Cactaceae. Descriptions and Illustrations of Plants of the Cactus Family . tape III . The Carnegie Institution of Washington, Washington 1922, p. 102 ( online ).
Individual evidence
- ↑ General description of the cacti . 1903, p. 113.
- ^ Edward F. Anderson : The great cactus lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 485-486 .
