Bergerocactus
Bergerocactus emoryi
Bergerocactus emoryi is the only species of the monotypic genus Bergerocactus in the cactus family ( Cactaceae ). The botanical name of the genus honors the German cactus specialists Alwin Berger. The specific epithet honors emoryi the U.S. Major William Hemsley Emory (1811-1887) who was responsible for the survey work on the Mexican border from 1850 to 1854. English common names are " Golden Cereus ," " Golden Spine Cereus ", " Prohibition Cactus ", " Sprawling Cactus" and " Cactus Velvet ".
Description
The shrubby Bergerocactus emoryi is highly branched near the base, and often forms pad of several meters in diameter. The more or less upright, cylindrical shoots reach stature heights of up to 60 centimeters in diameter between 3 to 6 inches. The 20 to 25 ribs are inconspicuous. The 20 to 30 spines are yellow, are darker with age and often completely covers the shoots one. The main mandrel is bent back slightly and the others are spread, and up to 5 centimeters long.
The opening day at the flowers are yellow and have a diameter of 5 to 6 centimeters. The flower cup and the flower tube are tomentose and thorns. The spherical, densely spined fruits have a diameter of 2.5 to 6 inches and runs contain egg-shaped, flattened, black, shiny seeds with fine, wetted surface.
Distribution, systematics and hazard
Bergerocactus emoryi is common in southern California and northwestern Baja California up to a height of about 60 meters near the coast.
The first plants were collected in California by John Leconte and Charles Parry and sent to George Engelmann. Through him, in 1852 the first description emoryi as Cereus. Nathaniel Lord Britton and Joseph Nelson Rose introduced in 1909 the genus Bergerocactus on.
Another synonym is nomenklatorisches Echinocereus emoryi ( Engelm. ) Rümpler (1885 ).
In the Red List of Threatened Species IUCN, the type is known as " Least Concern ( LC) ," ie, than not led at risk.