Rock Garden Plants
Umbilicus horizontalis (Guss.) DC.  
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FamilyCRASSULACEAE
Genus speciesUmbilicus horizontalis (Guss.) DC. 
BibliographyProdr. 3: 400 (1828)
Native RangeMedit. to w. Iran and Arabian Peninsula, Macaronesia
Primary BiomeTemperate
Habitatshady rocks
Descriptionlower leaves orbiculate, peltate, convex, sinuate, stem leaves dense, linear-aristate, flowers horizontal in long, compact spike, corolla tubular, lobes acute
Size10-15cm
Colordark yellow
Bloomsummer
Ca
Typetuberous succulent
Cultivationshady, humous, rock crevices
alpine house, humous, gravelly soil, shade
Propagationseed in spring, uncovered, germ. 1-3 months, 18-21°C
SynonymsCotyledon horizontalis Guss.
Cotyledon peltata J.C.Wendl.
Cotyledon pendulina Batt.
Cotyledon umbilicus-veneris var. amphitropa Batt.
Cotyledon umbilicus-veneris var. horizontalis (Guss.) Menezes
Cotyledon umbilicus-veneris ssp. horizontalis (Guss.) Batt.
Cotyledon umbilicus-veneris var. suberecta Maire
Cotyliphyllum horizontale (Guss.) Link
Umbilicus horizontalis var. purpurascens Prantl
Umbilicus maroccanus Gand.
Umbilicus pendulinus var. horizontalis (Guss.) Post
Umbilicus rodriguezii Gand.
Umbilicus rupestris ssp. horizontalis (Guss.) O.Bolós & Vigo
Umbilicus vulgaris ssp. horizontalis (Guss.) Batt. & Trab.
Territory1 Europe
     12 Southwestern Europe (BAL Baleares, COR Corse, SAR Sardegna, SPA Spain)
     13 Southeastern Europe (ALB Albania, BUL Bulgaria, GRC Greece, ITA Italy, KRI Kriti, SIC Sicilia, YUG Yugoslavia)
2 Africa
     20 Northern Africa (ALG Algeria, EGY Egypt, LBY Libya, MOR Morocco, TUN Tunisia)
     21 Macaronesia (AZO Azores, CNY Canary Is., MDR Madeira, SEL Selvagens)
3 Asia-Temperate
     34 Western Asia (EAI East Aegean Is., IRN Iran, LBS Lebanon-Syria, SIN Sinai, TUR Turkey)
     35 Arabian Peninsula (GST Gulf States, OMA Oman, SAU Saudi Arabia, YEM Yemen)
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(c) 1990-2025 RNDr. Pavel Slabý