Schoenus


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Schoenus

genus of the plant family Cyperaceae; two Australian species contain the toxin galegine; causes fatal pulmonary edema and hydrothorax in sheep when eaten in quantity. Includes S. asperocarpus, S. rigens. Called also poison sedge.
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This is the only natural site known in the Ru'us alJibal for a number of hygrophilous species, including Arundo donax, Epipactis veratrifolia, Nerium oleander, Pteris vittata and Schoenus nigricans, and the only Ru'us al-Jibal site known for self-seeded (feral) date palms Phoenix dactylifera (Figs.
These were scattered Shiny Bog-rush Schoenus nitens, plus Salt Angianthus Angianthus preissianus, White Sebaea Sebaea albidiflora, Narrow-leaved Wilsonia, Tiny Arrow-grass Triglochin minutissima and Prickly Arrowgrass.
The coverage and height of tussocks formed by Carex davalliana, Schoenus ferrugineus (clusters 1, 2 and 3), or Molinia caerulea (clusters 4 and 5) varied from 15% to 60% and from 10 to 30 cm, respectively, between the plots.
Pohl (Mora-Osejo, 1960) and Cyperus (Guarise & Vegetti, unpublished), while supernumerary collateral buds are observed in Schoenus ferrugineus L.
dunensis that are calcareous-fen species with the optimum in the Caricion davallianae alliance, (2) other fen species of the ScheuchzerioCaricetea fuscae (Dactylorhiza incarnata, Eleocharis quinqueflora, Epipactis palustris, Hydrocotyle vulgaris, Liparis loeselii, Parnassia palustris, Pedicularis palustris, Schoenus nigricans, Spiranthes aestivalis, Valeriana dioica), (3) subhalophytic and halophytic elements (Carex disticha, Centaurium littorale, C.
ravennae, the large rush Juncus socotranus and (in the relatively 'wet' wadis of the Mahdhah area of Oman, north of Wadi Jizzi) the smaller, rush-like sedge Schoenus nigricans.
Within Cyperoideae four major clades include: (1) a Schoeneae clade (with Schoenus L.
Heterogeneous Scirpus sensu lato has embryo types characteristic of Cyperus, Carex, Bulbostylis, Fimbrislylis, Schoenus and Schoenoplectus, whereas Cyperus has mainly the Cyperus-type embryo.
aleae, Ranunculus granatensis, Ranunculus macrophyllus, Ranunculus repens, Rumex conglomeratus, Rumex crispus, Samolus valerandi, Schoenus nigricans, Scirpus holoschoenus, Senecio laderoi, Sonchus maritimus subsp.
Longifolia, Schoenus nigricans, Sedum sediforme and Verbascum litigiosum + in 6; Agrostis curtisii, Asphodelus ramosus, Epipactis lusitanica, Quercus lusitanica, Stauracanthus boivinii, Thymelaea hirsuta and Thymus villosus + in 8.