dcsimg

Description

provided by Flora of Zimbabwe
Annual or perennial herbs. Leaves linear or filiform, mostly basal and usually sheathing at base. Inflorescence spicate or capitate, consisting of imbricate bracts in an ovoid head terminating an elongated scape; outer 2 to few pairs of bracts often sterile. Flowers bisexual, actinomorphic or partially zygomorphic. Sepals (2-)3; lower 2 placed laterally and opposite. Petals 3, free or united, actinomorphic. Stamens 3, often with 3 alternate staminodes. Ovary superior, usually 1-locular; ovules numerous. Seeds usually apiculate and longitudinally striate.
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Mark Hyde, Bart Wursten and Petra Ballings
bibliographic citation
Hyde, M.A., Wursten, B.T. and Ballings, P. (2002-2014). Xyridaceae Flora of Zimbabwe website. Accessed 28 August 2014 at http://www.zimbabweflora.co.zw/speciesdata/family.php?family_id=237
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Mark Hyde
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Bart Wursten
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Petra Ballings
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Flora of Zimbabwe

Xyridaceae

provided by wikipedia EN

The Xyridaceae are a family of flowering plants. The botanical name has been recognized by many taxonomists and is known as the yellow-eyed grass family.

The APG II system, of 2003 (unchanged from the APG system of 1998), also recognizes this family, and assigns it to the order Poales in the clade commelinids, in the monocots. This treatment in APG II represents a slight change from the APG system of 1998, which had recognized the family Abolbodaceae for some of the plants included here; that family was unplaced as to order, but was assigned to this same clade (although APG used the spelling "commelinoids").

The family contains almost 400 species in five genera,[2] but most of the species are found in the genus Xyris (see also Abolboda). The species are mostly tropical and subtropical.

The Cronquist system of 1981 also recognized such a family and placed it in the order Commelinales in the subclass Commelinidae in class Liliopsida in division Magnoliophyta.

The Wettstein system, last updated in 1935, placed the family in order Enantioblastae.

Xyris torta, twisted yellow-eyed grass, is on Minnesota's endangered species list.

References

  1. ^ Angiosperm Phylogeny Group (2009). "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III". Botanical Journal of the Linnean Society. 161 (2): 105–121. doi:10.1111/j.1095-8339.2009.00996.x. Archived from the original (PDF) on 2017-05-25. Retrieved 2013-07-06.
  2. ^ Christenhusz, M. J. M. & Byng, J. W. (2016). "The number of known plants species in the world and its annual increase". Phytotaxa. Magnolia Press. 261 (3): 201–217. doi:10.11646/phytotaxa.261.3.1.

"
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Xyridaceae: Brief Summary

provided by wikipedia EN

The Xyridaceae are a family of flowering plants. The botanical name has been recognized by many taxonomists and is known as the yellow-eyed grass family.

The APG II system, of 2003 (unchanged from the APG system of 1998), also recognizes this family, and assigns it to the order Poales in the clade commelinids, in the monocots. This treatment in APG II represents a slight change from the APG system of 1998, which had recognized the family Abolbodaceae for some of the plants included here; that family was unplaced as to order, but was assigned to this same clade (although APG used the spelling "commelinoids").

The family contains almost 400 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 Cronquist system of 1981 also recognized such a family and placed it in the order Commelinales in the subclass Commelinidae in class Liliopsida in division Magnoliophyta.

The Wettstein system, last updated in 1935, placed the family in order Enantioblastae.

Xyris torta, twisted yellow-eyed grass, is on Minnesota's endangered species list.

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cc-by-sa-3.0
copyright
Wikipedia authors and editors
original
visit source
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wikipedia EN