Aloe acutissima
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Aloe acutissimia in the Graz Botanical Garden |
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| Aloe acutissima | ||||||||||||
| H.Perrier |
Aloe acutissima is a species of aloes in the subfamily of the Affodilla plants (Asphodeloideae). The specific epithet acutissima is derived from the superlative of the Latin word acute for 'pointed' and refers to the leaves.
description
Vegetative characteristics
Aloe acutissima grows in a stem-forming manner. The upright, spreading or prostrate, highly branched trunks are up to 1 meter long and have a diameter of 2 to 3 centimeters. Their approximately 20 lanceolate, long narrowed leaves form rather dense rosettes and are persistent over a length of 20 to 30 centimeters below the shoot tips. The gray-green, reddish tinged leaf blade is 30 centimeters long and 4 centimeters wide. The piercing, pale brown teeth on the leaf margin are 3 millimeters long and 10 millimeters apart. The leaf sheaths are green.
Inflorescences and flowers
The inflorescence consists of two to three branches and is 50 centimeters long. The rather dense, cylindrical-tapered grapes are 10 to 15 centimeters long and 5 to 6 centimeters wide. The deltoid bracts encompass the reddish scarlet flower stalk and are 10 to 15 millimeters long. The reddish scarlet flowers are on 15 millimeter long peduncles . The flowers are 30 millimeters long and narrowed at their base. At the level of the ovary they have a diameter of 5.5 millimeters. Above this, the flowers are slightly narrowed and then widened towards their mouth. Your outer tepals are fused together over a length of 10 millimeters. The stamens and the pen stand out 1 to 2 millimeters from the flower.
genetics
The number of chromosomes is .
Systematics and distribution
Aloe acutissima is distributed in Madagascar in the provinces of Fianarantsoa and Toliara on shallow ground on rocks at altitudes of 240 to 1200 meters.
The first description by Henri Perrier de La Bâthie was published in 1926. A distinction is made between the following varieties :
- Aloe acutissima var. Acutissima
- Aloe acutissima var. Antanimorensis Reynolds
- Aloe acutissima var. Fiherenensis J.B. Castillon
- Aloe acutissima var. Isaloana J.-B.Castillon
- Aloe acutissima var. Itampolensis (Rebmann) J.-B. Castillon
- Aloe acutissima var. Itampoloana J.-B. Castillon
A synonym of Aloe acutissima var. Itampolensis is Aloe acutissima subsp. itampolensis Rebmann (2008).
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. 559-561 .
- Leonard E. Newton: Aloe acutissima . In: Urs Eggli (Hrsg.): Succulent lexicon. Monocotyledons . Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3662-7 , pp. 107 .
Individual evidence
- ↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 2.
- ↑ 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. 559 .
- ^ H. Perrier: Les Lomatophyllum et les Aloë de Madagascar . In: Mémoires de la Société Linnéenne de Normandie. Botanique . Volume 1, Number 1, 1926, p. 17.
- ^ Journal of South African Botany . Volume 22, Number 1, 1955, pp. 27-29.
- ↑ a b J. B. Castillon: Variétés nouvelles dans le genre Aloe à Madagascar . In: Succulentes . 2007, number 4, pp. 3-7.
- ^ Norbert Rebmann: In: Cactus & Co. Volume 12, Number 3, 2008, pp. 194–197.
- ↑ J.-B. Castillon: In: International Cactus Adventures . Number 83, 2009, p. 26.
- ↑ J.-B. Castillon: In: International Cactus Adventures . Number 83, 2009, pp. 30-31.
