"Yellow-eyed grass" redirects here. The term may also refer to Sisyrinchium californicum.
Xyris
Xyris complanata flower close-up
Scientific classification
Kingdom:
Plantae
Clade:
Tracheophytes
Clade:
Angiosperms
Clade:
Monocots
Clade:
Commelinids
Order:
Poales
Family:
Xyridaceae
Genus:
Xyris L.[1]
Synonyms[2]
Kotsjiletti Adans.
Xuris Adans.
Xyroides Thouars
Ramotha Raf.
Synoliga Raf.
Schismaxon Steud.
Xyris is a genus of flowering plants, the yelloweyed grasses, in the yellow-eyed-grass family. The genus counts over 250 species, widespread over much of the world, with the center of distribution in the Guianas.[2][3][4]
The leaves are mostly distichous, linear, flat, and thin or round with a conspicuous sheath at the base. They are arranged in a basal aggregation. The small, yellow flowers are borne on a spherical or cylindrical spike or head (inflorescence). Each flower grows from the axil of a leathery bract. The fruit is a nonfleshy, dehiscent capsule. In Xyris complanata, a single flower bud on the spike appears in the morning, and expands into a conspicuous flower during the afternoon hours.[3]
The APG IV system, of 2016, places the genus in family Xyridaceae, into the order Poales in the clade commelinids, in the monocots.
Species include:[1][3]
Xyris ambigua Beyrich ex Kunth
Xyris andina Malme
Xyris arenicola
Xyris asperula
Xyris baldwiniana Schultes
Xyris bayardii
Xyris brevifolia Michaux
Xyris bulbosa
Xyris caroliniana Walter
Xyris chapmanii
Xyris communis
Xyris complanata R.Br.
Xyris decipiens N.E.Br.
Xyris difformis Chapman
Xyris drummondii Malme
Xyris elliottii Chapman
Xyris elongata Rudge
Xyris exilis Doust & B.J.Conn
Xyris fimbriata Elliott
Xyris flabelliformis Chapman
Xyris flexifolia R.Br.
Xyris flexuosa
Xyris floridana
Xyris gracilis R.Br.
Xyris gracillima F.Muell.
Xyris inaequalis N.A.Wakef.
Xyris indica L.
Xyris indivisa N.A.Wakef.
Xyris iridifolia
Xyris isoetifolia Kral,
Xyris jupicai Richard
Xyris juncea R.Br.
Xyris lacera R.Br.
Xyris lanata R.Br.
Xyris laxiflora F.Muell.
Xyris laxifolia Martius
Xyris longisepala Kral
Xyris louisianica
Xyris macrocephala
Xyris marginata Rendle
Xyris montana Ries
Xyris muelleri Malme
Xyris neglecta
Xyris operculata Labill.
Xyris pallescens
Xyris panacea
Xyris papillosa
Xyris paradisiaca
Xyris pauciflora Willd.
Xyris platylepis Chapman
Xyris roycei N.A.Wakef.
Xyris scabrifolia R. M. Harper
Xyris serotina Chapman
Xyris smalliana Nash
Xyris stricta Chapman
Xyris subalata
Xyris tennesseensis Kral
Xyris torta Smith
Xyris ustulata L.A.Nilsson
Stand of mostly Xyris complanata in a small wetland
^ ab"Xyris". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government, Canberra. Retrieved 2008-10-12.
^ abKew World Checklist of Selected Plant Families
^ abc"Xyris". Flora of North America. Retrieved 2008-10-12.
^Flora of China, Vol. 24 Page 4, 黄眼草属 huang yan cao shu, Xyris Linnaeus, Sp. Pl. 1: 42. 1753; Gen. Pl. ed. 5; 25, 1754.
from Latin, meaning "having bracts." "Xyris bracteata". Atlas of Living Australia. Retrieved 2019-04-22. "Xyris bracteata". PlantNet NSW Flora Online...
Xyris platylepis is a perennial herb up to 10 cm (4 inches) tall with long, narrow leaves up to 50 cm (20 inches) long. USDA, NRCS (n.d.). "Xyris platylepis"...
"Xyris panacea". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 16 September 2015. "Xyris panacea...
239. Retrieved 21 May 2019. "Xyris lacera". Atlas of Living Australia. Retrieved 22 April 2019. Paczkowska, Grazyna. "Xyris lacera". FloraBase – West Australian...
Tasmania: Xyris marginata, Xyris muelleri, Xyris operculata, and Xyris tasmanica. They all occupy waterlogged soils and swamps with Xyris marginata thriving...
long but less than 3 mm (0.12 inches) wide. "Xyris montana". Tropicos. Missouri Botanical Garden. "Xyris montana". World Checklist of Selected Plant Families...
less than 10 mm (0.4 inches) wide. The Plant List, Xyris stricta Chapm. USDA, NRCS (n.d.). "Xyris stricta". The PLANTS Database (plants.usda.gov). Greensboro...
being cast aside like a lid. "Xyris operculata". Atlas of Living Australia. Retrieved 2019-04-22. Doust & Conn. "Xyris operculata". PlantNet NSW Flora...
meaning a resemblance to a sedge. "Xyris juncea". Atlas of Living Australia. Retrieved 2019-04-22. Doust & Conn. "Xyris juncea". PlantNet NSW Flora Online...
Xyris scabrifolia, common name Harper's yelloweyed grass, is a North American species of perennial in the yellow-eyed-grass family. It grows in the southern...
Carolina). Xyris baldwiniana is a perennial herb up to 50 cm (20 inches) tall with grass-like leaves and yellow flowers. The Plant List, Xyris baldwiniana...
only 3 mm (0.12 inches) wide. Xyris longisepala is listed as an endangered species in Florida. USDA, NRCS (n.d.). "Xyris longisepala". The PLANTS Database...
Wales and southern Victoria. "Xyris gracilis". Australian Plant Census. Retrieved 25 December 2022. Conn, Barry J. "Xyris gracilis". Royal Botanic Gardens...
yellow flowers. Varieties Xyris difformis var. curtissii (Malme) Kral - Belize, coastal states of USA from Texas to Virginia Xyris difformis var. difformis...
2(3): 227 Xyris isoetifolia diagnosis in Latin, description and commentary in English Kral, Robert. 1966. Sida 2(3): 252, figure 2 at right, Xyris isoetifolia...
Xyris drummondii, common name Drummond's yelloweyed grass, is a North American species of flowering plant in the yellow-eyed-grass family. It is native...
Distribution Map Xyris tennesseensis. Archived September 13, 2012, at the Wayback Machine Center for Plant Conservation. Retrieved August 27, 2011. Xyris tennesseensis...
Xyris smalliana is a perennial herb with a stem up to 60 cm (2 feet) tall with long, narrow leaves up to 20 cm (8 inches) long. The Plant List, Xyris...
generally less than 5 mm (0.2 inches) wide. The Plant List, Xyris torta Sm. USDA, NRCS (n.d.). "Xyris torta". The PLANTS Database (plants.usda.gov). Greensboro...
Xyris andina is a species of plant in the Xyridaceae family. It is endemic to Ecuador. Its natural habitat is subtropical or tropical moist montane forests...
Warning: This article is all goofed up. Xyris laxifolia is a New World species of flowering plants in the yellow-eyed-grass family. It is widespread in...
2014 county distribution map Flora of North America, Xyris drummondii Malme 1933. Tropicos, Xyris elliottii Chapm. Kral, R. 2001. Xyridaceae. En: Stevens...
species in five genera, but most of the species are found in the genus Xyris (see also Abolboda). The species are mostly tropical and subtropical. The...
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