Graptopetalum bellum
Graptopetalum bellum
The Graptopetalum bellum is a species of the genus Graptopetalum in the family Crassulaceae ( Crassulaceae ). As Tacitus bellus she was led to 1979 in the monotypic genus Tacitus.
- 4.1 Literature
- 4.2 Notes and references
Description
Vegetative characteristics
Graptopetalum bellum is flat, dichtblättige rosettes with a diameter 3-8 cm, which grow individually or in groups forming. The approximately 25 to 50, dark to grayish green leaves of a rosette are obovate to cuneate, broadly obtuse to rounded. They are 2 to 3.5 inches long, 1.5 to 2.8 inches wide and 4-5 mm thick. The leaves are slightly papillose and have an attached, 2 mm long Spitzchen.
The main root is thickened and reaches diameters up to 4 mm.
Inflorescences and flowers
The inflorescence is an erect Thyrsus with 1-4 ascending, wickedest time branches, each with up to 3 flowers. The green flower stem is 1.5 to 3.5 inches, the flower stem between 10 and 25 millimeters long.
The 5 -fold ( rarely 4 -fold ) flowers are almost scentless. The nearly equal, elliptic to oblong, pointed bright green sepals are bent back slightly at the end of the flowering period. They are 6-11 mm long and 2-4 mm wide. The corolla has a diameter of 30 (rarely 23) to 39 millimeters with a cup-shaped, 3-4 mm long and 4-6 mm wide tube. The pointed. deep pink petals are elliptic- ovate, entire or the edge is finely serrated in the middle. They reach a length of 11 to 18 millimeters and a width of 6 to 10 millimeters. Sit two rounded outgrowths which close the corolla tube and include the epipetalen stamens at the base.
The pink, 7-11 mm long stamens are fused to a length of 3 to 4 millimeters at the base of the corolla tube with. The whitish, about 0.35 to 1 millimeter long Nektarschüppchen are erect and cropped top. The intense red, 10 to 15 mm long and 2.25 mm wide at the base carpel is almost free, dorsally keeled and with the exception of the base 2 - furrowed. The gradually verschmälernde stylus is between 2.5 and 4.5 millimeters long.
Systematics, chromosome number and distribution
Graptopetalum bellum grows in the Mexican state of Chihuahua on rocks at altitudes of 1600 meters and is known only from the type locality.
The species was discovered in 1972 by Alfred Bernhard Lau ( 1928-2007 ). The first description as Tacitus bellus, now a synonym, in 1974 by Reid Venable Moran and Jorge Meyran. By David Richard Hunt the species was placed in the genus Graptopetalum 1979.
The chromosome number is approximately.
Terms and propagation
Because of their striking pink flowers she enjoys increasing popularity as an ornamental plant. The plant can be propagated from seed. However, because the seeds are very small and the seedlings grow very slowly, this type of propagation is somewhat tedious. In addition, new plants can also be drawn from foothills and head cuttings.