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Cyperus conglomeratus Rottb.,  it is a perennial or rhizomatous geophyte, densely tufted, the stems are straight, (4–)10–30(–40) cm high, obtusely triangular or rounded, at the base covered with persistent white papery sheaths, which sometimes form a bulbous structure. The leaves are linear, about as long as the stems, grooved, curved, stiff, but not prickly. The inflorescence is a dense terminal ring of 7–20 spikelets, bracts 3 to 8 cm long; spikelets usually short-stalked, flattened, broadly lanceolate in outline, 5–20 mm long and about 5 mm wide, whitish, chaffs are two-rowed, lanceolate, 5–6 mm long, pointed at the apex, keeled, brownish or greenish on the keel, flowers bisexual, uppermost flowers in spikelets male or sterile, perianth absent, stamens are 3; the testicle is superior, the stigmas are 3. The fruit is a three-sided smooth achene, 1.6–1.7 mm long and 1.2–1.3 mm wide. Life Form: G,   Flowering in: Almost the year,   Vern:———,   Phytochoria: SA+SZ, The native range of this species is W. Tropical Africa to NW. India and W. Indian Ocean.   Notes: Wild in Libya.

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Distribution in Libya
Libya desert 1932  Near Anai dunes 1952
Sirte Plains Fezzan area Ghat area 
Sirte 2015, 2016 Wadi El-Hemreit (47 km) from Truna near Sebha 1975 Ghat (Between Acacus and Tassili Mountains) 2004   Wadi Tanezzuft 2012


Bibliographic references:  
First: Encyclopedia Flora of Libyan:  
Jafri, S.M.H. & El-Gadi, A. (1985) Flora of Libya, Cyperaceae  Vol.  (120) Department of Botany, Al-Faateh Univ., Tripoli, Libya.
Second: Researches and PhD theses, master theses, Sorted by Newest: pdf files
Elsayed, N. (2016) Relationship between Vegetation and Soil Seed Bank at Protected Versus Unprotected Sites at Coastal Habitats in Libya.CATRINA (2016), 15 (1): 59-68. , Surt region in Libya 2016
Elsayed M. A. N. (2015) Floristic Composition of the Plant Cover at Surt Region in Libya. Catrina (2015), 12 (1): 63-71-2010 By the Egyptian society for environmental SCIENCES. Plant Cover at Surt Region 2015
Mukassabi, T.A, Ahmidat, G., Sherif, I.M., ELMogasapi, A.(2012) Checklist and life forms of plant species in contrasting climatic zones of Libya. Biological Diversity and Conservation – 5 / 3 (2012), plant species in contrasting climatic zones of Libya 2012
Ahmidat, Gh. (2004) Study of the vegetation cover of the area between the Acacus Mountains and the Tassili Mountains (Ghat). Master Thesis. Department of Botany.College of Science. Sebha University. Libya. (In Arabic)