Aloe glauca
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Aloe glauca is a species of the genus Aloes in the subfamily of the Affodilla family (Asphodeloideae). The specific epithet glauca comes from Latin , means 'blue-green' or 'gray-blue' and refers to the color of the leaves.
description
Vegetative characteristics
Aloe glauca has a short stem-forming growth. The 30 to 40 linear leaves form dense rosettes . Your strongly glauke , indistinctly lined leaf blade is 30 to 40 centimeters long and 10 to 15 centimeters wide. The underside of the leaf is sparsely warty-prickly. The piercing, reddish-brown teeth on the leaf margin are 4 to 5 millimeters long.
Inflorescences and flowers
The simple inflorescence is about 60 to 80 centimeters long. The dense, cylindrical, pointed grapes are 15 to 20 centimeters long and 8 to 9 centimeters wide. The white, ovoid-deltoid bracts are almost encompassing the stem at their base. They have a length of about 30 millimeters and are 10 millimeters wide. The pink, green-tipped flowers are on 30 to 35 millimeter long peduncles . They are about 40 millimeters long and rounded at their base. Above the ovary they are slightly narrowed, then widened and then narrowed again towards their mouth. Your outer tepals are not fused together. The stamens and the stylus barely protrude from the flower.
genetics
The number of chromosomes is .
Systematics and distribution
Aloe glauca is common in South Africa. Aloe glauca var. Glauca grows in dry bush in the Northern Cape and Western Cape provinces . Aloe glauca var. Spinosior is common on quartzite slopes in these provinces.
The first description by Philip Miller was published in 1768. A distinction is made between the following varieties :
- Aloe glauca var. Glauca
- Aloe glauca var. Spinosior Haw.
Aloe glauca var. Glauca
Synonyms of Aloe glauca var. Glauca are Aloe perfoliata var. Κ L. (1753), Aloe perfoliata var. Glauca Aiton (1789), Aloe rhodacantha DC. (1799), Aloe glauca var. Major Haw. (1812), Aloe glauca var. Minor Haw. (1812), Aloe glauca var. Elatior Salm-Dyck (1817) and Aloe glauca var. Humilior Salm-Dyck (1817).
Aloe glauca var. Spinosior
The differences to Aloe glauca var. Glauca are: The leaves are more spread out and less glaucous. Their underside is more warty-prickly. The teeth on the leaf margin are larger.
The variety was first described in 1831 by Adrian Hardy Haworth . Synonyms are Aloe muricata Schult. (1809) and Aloe glauca var. Muricata (Schult.) Baker (1880).
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. 264 .
- Leonard Eric Newton: Aloe glauca . In: Urs Eggli (Hrsg.): Succulent lexicon. Monocotyledons . Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3662-7 , pp. 140-141 .
Individual evidence
- ↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 95.
- ^ Philip Miller: The Gardeners Dictionary . 8th edition, 1768, without page numbers, number 16 ( online ).
- ^ Adrian Hardy Haworth: Saxifragëarum enumeratio. Accedunt revisiones plantarum succulentarum . Wood, London 1821, p. 40 ( online ).
Web links
- Aloe glauca in the Red List of South African Plants