Hypagophytum abyssinicum
| Hypagophytum abyssinicum | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name of the genus | ||||||||||||
| Hypagophytum | ||||||||||||
| A. Berger | ||||||||||||
| Scientific name of the species | ||||||||||||
| Hypagophytum abyssinicum | ||||||||||||
| ( Hochst. Ex A.Rich. ) A.Berger |
Hypagophytum abyssinicum is the only plant species of the monotypic genus Hypagophytum in the family of thick-leaf plants (Crassulaceae). The botanical name of the genus is derived from the Greek words "hypagein" for deceive , to lead astray and "phyton" for plant . He points to the erroneous classification of the species as Sempervivum .
description
Hypagophytum abyssinicum is a low, perennial herbaceous plant whose roots form a tuber or a tuberous rhizome . It forms one or more shoots up to 26 centimeters in length. Foliage leaves are arranged in whorls of three leaves each . The obovate leaves are 1 to 3.5 inches long and 0.8 to 2.5 inches wide, they are seated or have a stem-like base. There are several hydathodes near the edge of the leaf .
The terminal inflorescence usually consists of three branches up to 5 centimeters in length on which the terminal flowers are located. Your flower stalk is up to 1.7 inches long. The flowers are 10 to 12 count and haplostemon . Their sepals are fused together at their base on half, the sepals are lanceolate and 1.5 to 2.5 millimeters long and 0.5 to 1 millimeters wide. The (almost) free, white and sometimes slightly pink-tinged petals are spread out in a star shape. They are 5.5 to 6.5 millimeters long (rarely 12 millimeters) and 1.3 to 1.5 millimeters wide. The stamens are about as long as the petals. The small nectar flakes are circular. The free carpels are laterally compressed and clearly distinguishable into two parts. The upper part is bristly papilla and more or less ciliate at the abdominal seam.
The fruits are two-seeded follicles that break apart at a constriction. The seeds are dark brown, cylindrical-egg-shaped and indistinctly ribbed lengthways.
Systematics and distribution
Hypagophytum abyssinicum is widespread in northern Ethiopia and grows in the highlands on steep rocky surfaces at altitudes of 2250 to 3500 meters. The only species of the genus was first described under the name Sempervivum abyssinicum . Alwin Berger established the new genus Hypagophytum for the species .
Another synonym is Sedum abyssinicum (A. Rich.) Raym.-Hamet.
proof
literature
- Urs Eggli (ed.): Succulent lexicon. Crassulaceae (thick leaf family) . Eugen Ulmer, Stuttgart 2003, ISBN 3-8001-3998-7 , pp. 146-147 .
Individual evidence
- ^ Flora, or Allgemeine Botanische Zeitung . Volume 24, p. 30, Regensburg, Jena 1841
- ^ Adolf Engler , Carl Anton Eugen Prantl : The natural plant families . 2nd edition, Volume 18a, pp. 467-468, 1930