Sulcorebutia vargasii
| Sulcorebutia vargasii | ||||||||||||
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Sulcorebutia vargasii |
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| Scientific name | ||||||||||||
| Sulcorebutia vargasii | ||||||||||||
| Diers & Krahn |
Sulcorebutia vargasii is a species of plant in the genus Sulcorebutia from the cactus family(Cactaceae). The species name honors the discoverer of the species, the Bolivian engineer Israel R. Vargas.
description
Sulcorebutia vargasii grows individually or only very rarely sprouting with spherical to short cylindrical, dark reddish to dark brownish green bodies. These reach a diameter of 2.8 to 3.0 centimeters and heights of 2.5 to 3.0 centimeters. The roots of the plants form 1 to 3 thick root strands at the underground base, which branch out into thinner ones. The ribs are completely dissolved into warts 2.5 to 3.5 millimeters high. The elongated areoles are 0.5 to 1 millimeter wide and 2 to 3 millimeters long. The 11 to 17 radial spines are 2 to 9 millimeters long and usually slightly curved to the side or half upwards or diagonally away from the body. They are whitish-yellowish in color and become reddish to brownish to almost completely dark red-brown towards the tip of the thorn. The surface of all thorns is smooth.
The buds are dark reddish to purple in color. The yellow flowers are 24 to 28 millimeters long and 30 to 43 millimeters in diameter. The spherical to flat spherical and green pericarpels reach a diameter of 4 to 5 millimeters and are covered with 6 to 8 greenish and more or less reddish pointed, 1 to 3 millimeters long and up to 2.5 millimeters wide scales. The 26 to 31 bright yellow petals are arranged in three circles. The outer ones are pointed reddish light purple. The pen , greenish below and light yellow above , is 10 to 13 millimeters long and 0.7 to 0.8 millimeters thick. The whitish to light yellow scar is divided into 4 to 7 scar branches.
The spherical to pressed spherical fruit is 4 to 5 millimeters long and 5 to 7 millimeters wide. Initially it is light green or reddish-brownish and covered with a few triangular scales. When ripe, the fruit opens with irregular cracks in the ever thinning pericarp. The fruit contains 40 to 95 black to black-brown seeds. They are spherical to slightly bean or egg-shaped and 1.05 to 1.5 millimeters long and 0.85 to 1.25 millimeters wide.
Sulcorebutia vargasii can in the varieties var. Vargassii and var. Viridissima be distinguished. The latter is distinguished by its light green body.
distribution
Sulcorebutia vargasii is distributed in the Bolivian department of Santa Cruz in the province of Vallegrande at altitudes of approximately 2300 meters. The plants grow on bare spots on stony hills in mineral soils with little humus. Accompanying flora are low shrubs and bushes as well as Rebutia vallegrandensis .
proof
literature
- Lothar Diers, Wolfgang Krahn: Sulcorebutia vargasii (Cactaceae) - a new species from eastern Bolivia . In: Cacti and other succulents . Volume 56, No. 11, 2005, pp. 281-286.
- Lothar Diers, Wolfgang Krahn: Sulcorebutia vargasii var. Viridissima Diers et Krahn var. Nov. A nieuwe Sulcorebutia uit het oosten van Bolivia . In: Succulenta , Volume 85, Number 1, 2006, pp. 12-17.
Individual evidence
- ^ Willi Gertel, Wolfgang Latin: Sulcorebutien - gems from Bolivia . Special edition of the German Cactus Society, Pforzheim 2010, pp. 142, 151.
