Bupleurum libanoticum
Species of flowering plant
From Wikipedia, the free encyclopedia
Bupleurum libanoticum (Arabic: دبيق لبناني; commonly known as the Lebanon hare's ear), is an annual herbaceous plant species in the family Apiaceae.[1] It is native to the Eastern Mediterranean region, with a range extending through Lebanon, northwestern Syria, and southern Turkey (Anatolia).[2] The species primarily populates high-altitude montane environments within subtropical or Mediterranean biomes.[2][1]
| Bupleurum libanoticum | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Embryophytes |
| Clade: | Tracheophytes |
| Clade: | Spermatophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Apiales |
| Family: | Apiaceae |
| Genus: | Bupleurum |
| Species: | B. libanoticum |
| Binomial name | |
| Bupleurum libanoticum Boiss. & C.I.Blanche | |
| Synonyms | |
Taxonomy and name
Bupleurum libanoticum was first collected and described by the Swiss botanist Edmond Boissier and the French consul and botanist Charles Isidore Blanche in 1856.[3] The formal diagnosis was published in the second series of Boissier's multi-volume work, Diagnoses Plantarum Orientalium Novarum.[2] In 1898, the German botanist Joseph Bornmüller documented and described two distinct infraspecific forms of the taxon based on variations in growth habit: Bupleurum libanoticum f. laxum and Bupleurum libanoticum f. strictum.[4][5]
The generic name Bupleurum is derived from the Ancient Greek word βούπλευρος (boupleuros), a compound of βούς (bous, meaning "ox") and πλευρά (pleura, meaning "rib"), which refers to the prominent, rib-like parallel venation characteristic of the genus's leaves.[1] The specific epithet libanoticum is a geographical descriptor indicating its historical association with the mountain ranges of Lebanon.[1]
Description
The plant has an erect, elongated stem that typically ranges between 30 and 80 cm (12 and 31 in) in height, from which flat, spreading branches diverge.[1] Its foliage is made of entire, linear leaves that characteristically display five distinct parallel veins running lengthwise along the lamina.[1] In common with other members of the subfamily Apioideae, the inflorescence of B. libanoticum forms a compound umbel.[1] The structure consists of four to five short, highly unequal rays or pedicels that support small, bright yellow flowers.[1] Upon maturity, the flowers develop into dry, prismatic schizocarpic fruits that break apart into single-seeded mericarps.[1]
Distribution and habitat
The native distribution of Bupleurum libanoticum is restricted to the Levant and southern Anatolia.[2] Its presence is natively documented across southern Turkey, coastal western Syria, the West Syrian Mountains, the Anti-Lebanon Mountains, Central Lebanon, and coastal western Lebanon.[5] The species is specialized to high-altitude montane environments, growing predominantly within mountainous rocky terrains and limestone slopes.[1] Populations have been recorded within several regional protected zones, notably the Jaj Cedars Nature Reserve and the Jabal Moussa Biosphere Reserve.[1][6]
Ecology and conservation
As an annual herb, Bupleurum libanoticum completes its full life cycle from germination to senescence within a single growing period.[2] While the species is represented inside protected reserves, ecological monitoring within the Jabal Moussa Biosphere Reserve indicates that populations situated along the margins of montane agricultural zones are vulnerable to habitat degradation. Specifically, the localized use of chemical fertilizers and pesticides in nearby commercial orchards has been identified as a modern environmental pressure affecting its surrounding ecosystem.[6]