Aloe trichosantha
| Aloe trichosantha | ||||||||||||
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| Aloe trichosantha | ||||||||||||
| A. Berger |
Aloe trichosantha is a species of the genus Aloes in the subfamily of the Affodilla plants (Asphodeloideae). The specific epithet trichosantha is derived from the Greek words trichos for 'hair' and anthos for 'flower' and refers to the hairy flower envelope of the species.
description
Vegetative characteristics
Aloe trichosantha grows without a stem or with a very short stem, is single or sprouts and forms groups. The twelve to 16 lanceolate, narrowed leaves form a dense rosette . The cloudy green leaf blade is 40 to 50 centimeters long and 10 centimeters wide. Occasionally it is occupied with a few scattered spots. The spots are rarely numerous. The piercing, reddish-brown teeth on the leaf margin are about 4.5 to 5.5 millimeters long and 12 to 15 millimeters apart. The leaf juice dries yellow.
Inflorescences and flowers
The inflorescence has two to three branches and reaches a length of 100 to 150 centimeters. The rather dense, cylindrically pointed grapes are about 30 centimeters (rarely up to 50 centimeters) long. The ovate-lanceolate, pointed bracts have a length of 14 millimeters and are 6 millimeters wide. The strawberry-red or coral-pink flowers are white tomentose and stand on 5 to 6 millimeter long peduncles . The flowers are 20 to 23 millimeters long and rounded at their base. At the level of the ovary , they have a diameter of 7 to 8 millimeters. Above that, the flowers are not or very little constricted. Your tepals are not fused together over a length of 10 to 12 millimeters. The stamens and the stylus barely protrude from the flower.
genetics
The number of chromosomes is .
Systematics and distribution
Aloe trichosantha is common in Eritrea and Ethiopia . Aloe trichosantha subsp. trichosantha grows in Eritrea and Ethiopia at altitudes of 520 to 1700 meters on rocky slopes or in dry, flat areas. Aloe trichosantha subsp. longiflora is common in Ethiopia in the open, deciduous bushland on rocks and alluvial soils at altitudes of 1000 to 1950 meters.
The first description by Alwin Berger was published in 1905. The following subspecies are distinguished:
- Aloe trichosantha subsp. trichosantha
- Aloe trichosantha subsp. longiflora M.G. Gilbert & Sebsebe
Aloe trichosantha subsp. trichosantha
synonyms are Aloe percrassa Schweinf. (1894, nom. Illeg. ICBN -Article 53.1) and Aloe percrassa var. Albopicta Schweinf. (1894, incorrect name ICBN -Article 11.4)
Aloe trichosantha subsp. longiflora
Aloe trichosantha subsp. longiflora differs from Aloe trichosantha subsp. trichosantha subsp. sakarahensis by 2 to 4 millimeter long teeth and the 25 to 30 millimeter long flowers. The first description of this subspecies by Michael George Gilbert and Sebsebe Demissew was published in 2000.
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. 279 .
- Leonard Eric Newton: Aloe trichosantha . 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. 87.
- ↑ Alwin Berger: About the systematic structure of the genus Aloe . In: Botanical yearbooks for systematics, plant history and plant geography . Volume 36, Number 1, 1905, p. 62 ( online ).
- ↑ Michael George Gilbert, Sebsebe Demissew: Further notes on the genus Aloe in Ethiopia and Eritrea . In: Kew Bulletin . Volume 52, Number 1, 1997, pp. 142-143.
Web links
- Photos of Aloe trichosantha
- Herbarium specimens of Aloe trichosantha