Cyclamen libanoticum

Cyclamen libanoticum
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Embryophytes
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Ericales
Family: Primulaceae
Genus: Cyclamen
Subgenus: C. subg. Gyrophoebe
Species:
C. libanoticum
Binomial name
Cyclamen libanoticum

Cyclamen libanoticum, commonly known as the Lebanon cyclamen or Lebanese sowbread, is a species of perennial, tuberous geophyte in the family Primulaceae.[1][2] It is an narrow endemic species native exclusively to a highly localized mountainous zone within Lebanon.[3] Discovered in the late 19th century, the plant is characterized by its uniquely fragrant, bi-colored spring blooms and distinctively patterned foliage.[4] Due to its extremely restricted natural range and vulnerability to anthropogenic disturbances, it is classified as an Endangered species.[5][6]

Taxonomy and history

The species was first documented and scientifically described in 1898 by the German botanist Friedrich Hermann Gustav Hildebrand in the journal Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie.[7] Following its initial collection, the exact wild populations remained unverified by modern botanists for several decades, leading to fears that the species had become extinct in nature until its formal rediscovery in the mid-20th century.[4]

Phylogenetically, Cyclamen libanoticum is placed within the Cyclamen subgenus Gyrophoebe.[8] In cultivation, the species is genetically compatible with related taxa of the same subgenus, leading to the creation of notable fertile hybrids:

  • Cyclamen × wellensiekii Iets. (1974) – a hybrid obtained in 1969 in the Netherlands resulting from a cross with Cyclamen cyprium.[9]
  • Cyclamen × schwarzii Grey-Wilson – a fertile hybrid resulting from a cross with Cyclamen pseudibericum.[10]

The specific epithet libanoticum is a geographical descriptor directly attributing its origin to the country of Lebanon.[2]

Description

Cyclamen libanoticum is a small, herbaceously compact geophyte reaching a standard height of 10 to 15 cm (3.9 to 5.9 in).[2] The underground perennating organ is a compressed-spherical tuber that grows up to 5 cm (2.0 in) in diameter; its smooth surface becomes increasingly rough and fissured with age.[4] Uniquely among many related species, the tuber produces thin roots (approximately 0.5 mm in thickness) arising strictly from a single area on its lower side or central base.[4]

The foliage emerges in late autumn and reaches full maturation by mid-winter.[2] The leaves are heart-shaped (cordate), measuring 7–12 cm long by 5–10 cm wide, with entire to slightly wavy (undulate) margins that occasionally display minute teeth.[2] The adaxial (upper) leaf surface features a dark gray-green coloration accented by a pale green or silvery arrowhead pattern, while the abaxial (lower) surface is a striking, deep purple hue.[2]

The blooming period occurs from late February through early April.[11] The solitary flowers are notable for their strong, spicy, peppery scent.[11] Each flower consists of five reflexed, broad corolla lobes that measure 20 to 30 mm in length.[11] The petals open white before maturing into a pale pink hue, accented by a characteristic M-shaped crimson-magenta blotch prominently displayed at the base of each lobe.[11][2] Following fertilization, the pedicel coils into a circinate (spiral) structure, pulling the developing capsule toward the soil surface to mature by early summer.[2]

Distribution and habitat

The natural distribution of Cyclamen libanoticum is exclusively confined to a single, small geographic range located in the western slopes of Mount Lebanon northeast of Beirut.[11][12] The primary known populations are concentrated within and immediately around the Jabal Moussa Biosphere Reserve and the valley of the Ibrahim River (Nahr Ibrahim).[11][2] The species is steno-endemic and grows at altitudinal bands ranging between 750 and 1,400 m (2,460 and 4,590 ft) above sea level.[2] Its preferred microhabitat is limited to heavily shaded, moist, northern and northwestern-facing slopes.[11] It thrives natively in pockets of dolomitic limestone cliffs, deep leaf litter, or moss beds under dense undergrowth within deciduous and evergreen oak woodlands.[11][2]

Cyclamen libanoticum has been officially assessed for the IUCN Red List and is designated as an Endangered (EN) species.[5] This designation is primarily governed by the plant's small extent of occurrence (EOO) and highly fragmented population structures.[13] The wild populations face distinct localized ecological pressures. Intensive field tracking has demonstrated that despite parts of its populations residing inside protected biosphere boundaries, the species remains vulnerable to habitat destruction caused by climate-induced wild forest fires.[14] Additionally, populations situated outside the core reserves are threatened by illegal wild gathering for the commercial horticultural trade, road expansions, and localized stone quarrying operations.[15][14]

Phytochemistry

Phytochemical evaluations of C. libanoticum foliage and flowers have identified numerous bioactive compounds common to the genus. Chromatographic profiling reveals that the leaves contain rich accumulations of structural carotenoids, including neoxanthin, violaxanthin, lutein, and β-carotene.[16] The conspicuous coloration of the flower petals is derived from a complex matrix of anthocyanins, notably cyanidin 3,5-di-O-glucoside and peonidin derivatives, which display varying antioxidant capacities under laboratory analysis.[17]

See also

References

Citations

Bibliography

  • Bou Dagher Kharrat, M.; El Zein, H. (2017). "Cyclamen libanoticum". The IUCN Red List of Threatened Species. 2017: e.T109400262A109400281. doi:10.2305/IUCN.UK.2017-3.RLTS.T109400262A109400281.en (inactive 26 June 2026).{{cite journal}}: CS1 maint: DOI inactive as of June 2026 (link)
  • Bou Dagher-Kharrat, M.; El Zein, H.; Stephan, J.; Catarino, S.; Rego, F. (2023). "First comprehensive IUCN Red List assessment of 100 endemic species of the flora of Lebanon". Phytotaxa. 597 (1): 1–21. doi:10.11646/phytotaxa.597.1.1.
  • Grey-Wilson, Christopher (1997). Cyclamen: A Guide for Gardeners, Horticulturists and Botanists. London: Batsford. ISBN 978-0-7134-7661-3.
  • Haber, R.; Semaan, M. (2013). Mathew, B. (ed.). The Genus Cyclamen: In Science, Cultivation, Art and Culture. Richmond: Royal Botanic Gardens, Kew. pp. 307–310. ISBN 978-1-8424-6472-4.
  • Hildebrand, Friedrich (1898). "Eine neue Cyclamen-Art aus dem Libanon". Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie. 25 (3): 477–483.
  • Ietswaart, J. H. (1974). "Cyclamen × wellensiekii (C. libanoticum × C. cyprium) hybr. nov". Acta Botanica Neerlandica. 23 (4): 555–559. doi:10.1111/j.1438-8677.1974.tb00971.x.
  • Mitropoulou, G.; Vasilas, A.; Sidiropoulou, E.; Skotti, E.; Bariamis, S. E. (2022). "Anthocyanins and Carotenoids Characterization in Flowers and Leaves of Cyclamen Genotypes Linked with Bioactivities Using Multivariate Analysis Techniques". Plants. 11 (13): 1725. doi:10.3390/plants11131725. PMC 9220265. PMID 35807079.
  • RBG Kew (2026). "Plants of the World Online: Cyclamen libanoticum Hildebr". Royal Botanic Gardens, Kew. Retrieved June 23, 2026.
  • Université Saint-Joseph (2026). "Lebanon Flora: Cyclamen libanoticum Hildebr". Université Saint-Joseph de Beyrouth. Retrieved June 23, 2026.
  • Wikimedia Commons logo Media related to Cyclamen libanoticum at Wikimedia Commons
  • Cyclamen Society
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