Aloe trachyticola
| Aloe trachyticola | ||||||||||||
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| Aloe trachyticola | ||||||||||||
| ( H.Perrier ) Reynolds |
Aloe trachyticola is a species of aloes in the subfamily of the Affodilla family (Asphodeloideae). The specific epithet trachyticola is derived from the rock name trachyte and the Greek word -cola for 'inhabiting' and refers to the habitat of the species.
description
Vegetative characteristics
Aloe trachyticola grows simply and without stem or occasionally with a short stem. If there are trunks, they are prostrate. The six to ten lanceolate leaves are initially arranged in two lines. Later there are up to 14 leaves, which are arranged in a spiral and can almost form a rosette . The bluish green, reddish tinged leaf blade is 10 to 15 centimeters long and 3 to 4 centimeters wide. The rounded tip of the leaf is set with short teeth. The piercing, reddish-brown teeth on the leaf margin are 1 to 1.5 millimeters long and 3 to 5 millimeters apart.
Inflorescences and flowers
The simple inflorescence reaches a length of 65 to 90 centimeters. The dense, heady grapes are 2 to 3 inches long and 7 to 8 inches wide. The egg-shaped-pointed bracts have a length of 10 millimeters and are 6 millimeters wide. The lowest flower stalks are 3 to 5 millimeters long, the uppermost have a length of 15 to 20 millimeters. The red flowers are up to 35 millimeters long and rounded at their base. At the level of the ovary they have a diameter of 8 millimeters. Above that, the flowers are slightly expanded. Your tepals are almost not fused together. The stamens and the stylus barely protrude from the flower.
Systematics and distribution
Aloe trachyticola is common in Madagascar . Aloe trachyticola var. Trachyticola grows in the provinces of Antananarivo and Fianarantsoa on trachyte and quartzite at altitudes of 1400 to 2200 meters. Aloe trachyticola var. Mutifolia is distributed southeast of Antsirabe on granite deposits at altitudes of 1900 to 2000 meters. The variety is only known from the locality of the type.
The first description as Aloe capitata var. Trachyticola by Henri Perrier de la Bâthie was published 1926th Gilbert Westacott Reynolds elevated the variety to the rank of a species in 1957.
A distinction is made between the following varieties :
- Aloe trachyticola var. Trachyticola
- Aloe trachyticola var. Mutifolia J.-B. Castillon
Aloe trachyticola var. Mutifolia
The differences to Aloe trachyticola var. Trachyticola are: The up to 30 dark green, reddish tinged leaves of the variety are 15 to 30 centimeters long. The first description by Jean-Bernard Castillon was published in 2004.
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. 223 .
- Leonard Eric Newton: Aloe trachyticola . In: Urs Eggli (Hrsg.): Succulent lexicon. Monocotyledons . Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3662-7 , pp. 186 .
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. 101.
- ^ H. Perrier: Les Lomatophyllum et les Aloë de Madagascar . In: Mémoires de la Société Linnéenne de Normandie. Botanique . Volume 1, Number 1, 1926, p. 38.
- ^ Journal of South African Botany . Volume 23, number 2, Kirstenbosch 1957, pp. 72-73, plates 26-27.
- ^ Jean-Bernard Castillon: Two new species and a new variety of Aloe (Asphodelaceae) from Madagascar . In: Haseltonia . Number 10, 2004, pp. 44-50.