Monanthes polyphylla
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Monanthes polyphylla is a type of plant from the genus Monanthes in the family of thick-leaf plants (Crassulaceae). The specific epithet polyphylla is derived from the Greek words poly for 'much' and phyllus for 'leafy'.
description
Vegetative characteristics
Monanthes polyphylla is a perennial , richly branched rosette plant that forms dense cushions from many rosettes of almost the same size. Their prostrate, slender shoots are 1 to 2 millimeters in diameter. The hemispherical rosettes when viewed from the side reach a diameter of 6 to 14 millimeters. The narrow obovate leaves are rounded or truncated. The leaf blade is 3 to 6 millimeters long, 1 to 2 millimeters wide and about 1 millimeter thick. Their surface is often covered in the lower part with a few short, glandular hairs or is entirely glandular-hairy. Towards the tip it is densely papillary .
Inflorescences and flowers
The terminal inflorescence branches from its base. The seven to nine-fold flowers reach a diameter of 4 to 9 millimeters. They stand on glandular-hairy flower stalks that are 10 to 20 millimeters long. Their narrow, elongated, pointed or tapering petals are 3.1 to 4.2 millimeters long and 0.4 to 0.6 millimeters wide. There are glandular hairs along the edges. The nectar flakes are 1.4 to 2.3 millimeters long and 1.6 to 2.5 millimeters wide. Your blade is fan-shaped, truncated or inverted heart-shaped, tiny serrated and narrowed at the base.
Distribution and systematics
Monanthes polyphylla is common in the Canary Islands . Monanthes polyphylla subsp. polyphylla grows on the islands of Gran Canaria , Tenerife and possibly La Palma . Monanthes polyphylla subsp. amydros is common on Gomera and possibly La Palma.
The first description by Adrian Hardy Haworth was published in 1821. The type specimen was collected by Francis Masson and is kept in the Natural History Museum .
Synonyms are Petrophyes polyphylla (Haw.) Webb & Bertholt (1841), Sempervivum polyphyllum (Haw.) Webb & Bertholt (1841, nom. Illeg. ICBN article 53.1), Sempervivum monanthes Aiton (1789) and Monanthes monanthes (Aiton) Linding . (1926, nom. Illeg. ICBN -Article 23.4).
The following subspecies are distinguished:
- Monanthes polyphylla subsp. polyphylla
- Monanthes polyphylla subsp. amydros R. Nyffeler
A synonym of Monanthes polyphylla subsp. polyphylla is Sempervivum monanthes var. filicaule Kuntze (1891).
Monanthes polyphylla subsp. amydros
The differences to Monanthes polyphylla var. polyphylla are: The subspecies forms more compact pads. The shoots, measuring 2 to 3 millimeters in diameter, are prostrate and only rarely ascending. The rosettes, which are cylindrical in the side view, have a diameter of 8 to 14 millimeters. The obovate, rounded or pointed leaves are 4 to 7 millimeters long, 2 to 4 millimeters wide and about 2 millimeters thick.
The subspecies was first described in 1992 by Reto Nyffeler . A synonym is Monanthes amydros Svent. (1960, nom. Invalid ICBN -Article 37.1).
proof
literature
- Reto Nyffeler: Monanthes polyphylla . In: Urs Eggli (Hrsg.): Succulent lexicon. Crassulaceae (thick leaf family) . Eugen Ulmer, Stuttgart 2003, ISBN 3-8001-3998-7 , pp. 193 .
Individual evidence
- ↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 189.
- ^ Adrian Hardy Haworth: Saxifragëarum enumeratio. Accedunt revisiones plantarum succulentarum . Wood, London 1821, Part 2, p. 68 ( online ).
- ^ Reto Nyffeler: A taxonomic revision of the genus Monanthes Haworth (Crassulaceae) . In: Bradleya . Volume 10, 1992, pp. 73-74.
Web links
- Photo of a dense pad of Monanthes polyphylla
- Herbarium evidence