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Xyris

 
Xyris

 
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Xyris
 
 
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Xyris is the botanical name
Botanical name

A botanical name is a formal scientific name conforming to the International Code of Botanical Nomenclature and, if the plant is a cultigen, the additional cultivar and/or Group epithets must conform to the International Code of Nomenclature for Cultivated Plants....
 of a genus
Genus

A genus is a low-level taxonomic rank used in the classification of living and fossil organisms. The taxonomic ranks are domain , kingdom , phylum, class , order , family , genus, and species....
 of flowering plants in the Yellow-eyed-grass family. The genus counts over two hundred fifty species, with the center of distribution in the Guiana's. The leaves
Leaf

In botany, a leaf is an above-ground plant Organ specialized for photosynthesis. For this purpose, a leaf is typically flat and thin, to expose the cells containing chloroplast to light over a broad area, and to allow light to penetrate fully into the tissues....
 are mostly distichous, linear, flat and thin or round with a conspicuous sheath at the base.






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Xyris is the botanical name
Botanical name

A botanical name is a formal scientific name conforming to the International Code of Botanical Nomenclature and, if the plant is a cultigen, the additional cultivar and/or Group epithets must conform to the International Code of Nomenclature for Cultivated Plants....
 of a genus
Genus

A genus is a low-level taxonomic rank used in the classification of living and fossil organisms. The taxonomic ranks are domain , kingdom , phylum, class , order , family , genus, and species....
 of flowering plants in the Yellow-eyed-grass family. The genus counts over two hundred fifty species, with the center of distribution in the Guiana's.
Xyris Stand
The leaves
Leaf

In botany, a leaf is an above-ground plant Organ specialized for photosynthesis. For this purpose, a leaf is typically flat and thin, to expose the cells containing chloroplast to light over a broad area, and to allow light to penetrate fully into the tissues....
 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 flower
Flower

A flower, sometimes known as a bloom or blossom, is the reproduction structure found in flowering plants . The biological function of a flower is to mediate the union of male sperm with female ovum in order to produce seeds....
s are dioecious
Dioecious

Dioecious - from Greek language for "two households" - refers to species of seed-bearing plants having separate male and female plants. That is, no individual plant of the species produces both microspores and megaspores; individual plants are either male or female ....
, borne on a spherical or cylindrical spike or head (inflorescence
Inflorescence

An inflorescence is a group or cluster of flowers arranged on a Plant stem that is composed of a main branch or a complicated arrangement of branches....
). Each flower grows from the axil of a leathery bract
Bract

In botany, a bract is a modified or specialized leaf. Bracts are ordinarily associated with reproductive structures . They are ordinarily reduced in size relative to foliage leaves, or of a different color or texture from foliage leaves, or both....
. The fruit
Fruit

The term fruit has different meanings dependent on context, and the term is not synonymous in food preparation and biology. In botany, which is the scientific study of plants, fruits are the ripened Ovary of flowering plants....
 is a non-fleshy, 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.

The APG II system
APG II system

A modern list of systems of plant taxonomy, the APG II system of plant classification was published in 2003 by the Angiosperm Phylogeny Group, APG, in...
, of 2003, places the genus in family Xyridaceae
Xyridaceae

Xyridaceae is the botanical name of a family of flowering plants. Such a family has been recognized by many taxonomists and is known as the Yellow-eyed-grass Family....
, in to the order Poales
Poales

Poales is a large order of flowering plants in the monocotyledons, and includes families of plants such as the Poaceae, bromeliads, and Cyperaceaes....
 in the clade commelinids
Commelinids

In plant taxonomy, the name commelinids is used by the APG II system for a clade within the monocots, which in its turn is a clade within the angiosperms....
, in the monocots.

Species include:
  • Xyris andina
    Xyris andina

    Xyris andina is a species of plant in the Xyridaceae family. It is Endemism to Ecuador. Its natural habitat is subtropical or tropical moist montanes....
    Malme
  • Xyris ambigua Beyrich ex Kunth
  • Xyris baldwiniana Schultes
  • Xyris brevifolia Michaux
  • Xyris caroliniana Walter
  • Xyris complanata R.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 gracilis R.Br.
  • Xyris gracillima F.Muell.
  • Xyris inaequalis N.A.Wakef.
  • Xyris indica L.
  • Xyris indivisa N.A.Wakef.
  • 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 marginata Rendle
  • Xyris montana Ries
  • Xyris muelleri Malme
  • Xyris operculata Labill.
  • 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 tennesseensis Kral
  • Xyris torta Smith
  • Xyris ustulata L.A.Nilsson

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