Umbilicus (genus)
Real Venus Abel ( Umbilicus rupestris )
Umbilicus is a genus of flowering plants in the family Crassulaceae ( Crassulaceae ). It is referred to in German as Venus Abel or navel herb. The botanical name of the genus derives from the Latin word for " navel " and refers to the navel -like depression of the plate leaves.
Description
The species of the genus Umbilicus are small, hairless, perennial, more or less deciduous, succulent herbaceous plants. Up to umbilicus oppositifolius they almost always have a tuberous rhizome or rootstock. The weichfleischigen leaves are stalked, nearly circular, usually (except for Umbilicus oppositifolius ) more or less shield-shaped and possess in the middle of a depression. The leaf margin sinuate to toothed. The leaves on the shoots are generally getting smaller towards the top and are linear - lanceolate.
The most Vielblütige, long and sometimes branched inflorescence is a terminal raceme or panicle. The sometimes upright, but usually horizontal or pendulous flowers are fünfzählig and obdiplostemon. Your tubular or bell-shaped crown has erect or spreading at the top corner, which are always fused with the base. The petals are white, green or yellow colored and sometimes crowded purple.
The fruit is a slender follicle.
Systematics and distribution
The genus Umbilicus is in Western and Central Europe, Macaronesia, the Mediterranean region, the Middle East, spreading from West Asia to the western Caucasus to the Arabian Peninsula and in North, Central and East Africa. After Colin Charles Walker ( born 1952 ) is the genus Umbilicus from the species:
- Section umbilicus Umbilicus albido - opacus Carlstrom, Origin: Aegean
- Umbilicus chloranthus Heldr. & Sart. ex Boiss., occurs only in Puglia, on the Balkan Peninsula, in the Aegean and Asia Minor
- Umbilicus citrinus Wolley - Dod
- Upright Venus Abel ( Umbilicus erectus DC; Syn. U. luteus (Hudson ) Webb & Berthel. ), Origin: South Italy, Balkan peninsula, Aegean, Turkey, Syria, Lebanon
- Umbilicus heylandianus Webb & Berthel. , Occurs only in Spain, Portugal and Morocco
- Horizontal Venus Abel (umbilicus horizontalis ( Guss. ) DC. ), Origin: Southern Europe, Turkey, Cyprus, Syria, Iran, North Africa; with the varieties: Umbilicus horizontalis var horizontalis
- Umbilicus horizontalis var intermedius ( Boiss. ) Chamberlain (also known as a separate species U. intermedius ( Boiss. ) considered ); Home: Turkey, Syria, Palestine, Iran, Egypt
- Section Chiastophyllum Ledeb. (also as a separate genus Chiastophyllum ( Ledeb. ) A. Berger viewed ) Forest Crassula (umbilicus oppositifolius ( Ledeb. ex Nordm ) Ledeb; Syn: .. Chiastophyllum oppositifolium ( Ledeb. ex Nordm ) Stapf ex A. Berger. ); Home: West Caucasus.
The species of section Chiastophyllum differ from those of the Section umbilicus by their fibrous roots as well as the opposite, not shield-shaped leaves.