Aloe Johannis
| Aloe Johannis | ||||||||||||
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| Aloe Johannis | ||||||||||||
| J.-B. Castillon |
Aloe johannis is a species of aloes in the subfamily of the Affodil family (Asphodeloideae). The specific epithet johannis honors the Greek insurance agent and botanist John Jacob Lavranos .
description
Vegetative characteristics
Aloe johannis grows trunk-forming and branches at the base and above. The prostrate trunks reach a length of 10 to 50 centimeters. The seven to twelve curved-ascending leaves are elongated deltoid. The shiny dark green or brownish red in direct sunlight leaf blade is 15 to 30 centimeters long, to the base 2 to 4 centimeters wide and 1.5 centimeters thick. It expands to a width of 2.5 to 4.5 centimeters and narrows to a rounded, spike-shaped tip. The whitish or reddish teeth on the leaf margin are 1 millimeter long and 5 millimeters apart.
Inflorescences and flowers
The inflorescence reaches a length of 30 to 60 centimeters. The up to three, dense, capitate to almost capitate grapes consist of 15 to 30 flowers. The pink, egg-shaped-pointed bracts have a length of 5 millimeters and are 4 millimeters wide. The elongated, bell-shaped, yellow flowers are reddish in the bud stage. They stand on 10 to 11 millimeter long, reddish, more or less horizontal flower stalks . The flowers are 25 millimeters long. At the level of the ovary , the flowers have a diameter of 4 millimeters. Above that, they are extended to 7 millimeters towards the mouth. Your outer tepals are almost not fused together. The stamens and the pen stand 2 to 3 millimeters out from the flower.
Systematics and distribution
Aloe johannis is widespread in Madagascar on quartzite rocks at an altitude of around 1930 meters. The species is only known from the area where the type was found.
The first description by Jean-Bernard Castillon was published in 2006.
proof
literature
- Susan Carter , John J. Lavranos , Leonard E. Newton , Colin C. Walker : Aloes. The definitive guide . Kew Publishing, Royal Botanic Gardens, Kew 2011, ISBN 978-1-84246-439-7 , pp. 562 .
Individual evidence
- ↑ Gideon F. Smith, Colin C. Walker, Estrela Figueiredo: What's in a name: epithets in Aloe L. (Asphodelaceae) and what to call the next new species . In: Bradleya . Volume 28, 2010, p. 94.
- ^ Jean-Bernard Castillon: Deux nouveaux taxa dans le genre Aloe (Asphodelaceae) à Madagascar . In: Succulentes . 2006, number 1, pp. 18-23.
Web links
- Photos of Aloe Johannis
- Herbarium evidence