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Perennial Veldtgrass

Ehrharta calycina Sm.

Distribution in Egypt

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Mediterranean region (Ras El Hekma).

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Global Distribution

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South Africa, Namibia.

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Habitat

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Introduced in the early 1950s but probably no longer present.

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Life Expectancy

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Perennial or rarely annual.

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Physical Description

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Perennials, Terrestrial, not aquatic, Rhizomes present, Rhizome elongate, creeping, stems distant, Stems nodes swollen or brittle, Stems erect or ascending, Stems geniculate, decumbent, or lax, sometimes rooting at nodes, Stems caespitose, tufted, or clustered, Stems terete, round in cross section, or polygonal, Stem internodes hollow, Stems with inflorescence less than 1 m tall, Stems, culms, or scapes exceeding basal leaves, Leaves mostly cauline, Leaves conspicuously 2-ranked, distichous, Leaves sheathing at base, Leaf sheath mostly open, or loose, Leaf sheath smooth, glabrous, Leaf sheath hairy, hispid or prickly, Leaf sheath and blade differentiated, Leaf blades linear, Leaf blade auriculate, Leaf auricules setose or ciliate, Leaf blades 2-10 mm wide, Leaf blades mostly flat, Leaf blade margins folded, involute, or conduplicate, Leaf blades mostly glabrous, Leaf blades scabrous, roughened, or wrinkled, Ligule present, Ligule an unfringed eciliate membrane, Inflorescence terminal, Inflorescence simple spikes, Inflorescence an open panicle, openly paniculate, branches spreading, Inflorescence a contracted panicle, narrowly paniculate, branches appressed or ascending, Inflorescence solitary, with 1 spike, fascicle, glomerule, head, or cluster per stem or culm, Inflorescence lax, widely spreading, branches drooping, pendulous, Inflorescence a panicle with narrowly racemose or spicate branches, Inflorescence branches more than 10 to numerous, Flowers bisexual, Spikelets pedicellate, Spikelets sessile or subsessile, Spikelets laterally compressed, Spikelet less than 3 mm wide, Spikelets with 1 fertile floret, Spikelets with 3-7 florets, Spikelet with 1 fertile floret and 1-2 sterile florets, Spikelets solitary at rachis nodes, Spikelets with 1 terminal fertile floret and 2 lateral staminate or sterile florets, Spikelets bisexual, Spikelets disarticulati ng above the glumes, glumes persistent, Spikelets disarticulating beneath or between the florets, Rachilla or pedicel glabrous, Glumes present, empty bracts, Glumes 2 clearly present, Glumes equal to or longer than adjacent lemma, Glumes 4-7 nerved, Glumes 8-15 nerved, Lemma 5-7 nerved, Lemma body or surface hairy, Lemma apex truncate, rounded, or obtuse, Lemma awnless, Lemma margins thin, lying flat, Lemma straight, Palea present, well developed, Palea membranous, hyaline, Palea shorter than lemma, Stamens 6, Styles 2-fid, deeply 2-branched, Stigmas 2, Fruit - caryopsis, Caryopsis ellipsoid, longitudinally grooved, hilum long-linear.
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USDA PLANTS text

Ehrharta calycina

provided by wikipedia EN

Ehrharta calycina is a species of grass known by the common names perennial veldtgrass and purple veldtgrass.

Distribution

It is native to southern Africa; from South Africa (within the Cape Provinces, Free State and KwaZulu-Natal), Lesotho and Namibia.[1]

It grows in Veld grassland habits and on low-lying sandy areas.[2]

Description

Ehrharta calycina is a highly variable perennial grass, often but not always rhizomatous.

It usually reaches 30–70 centimetres (12–28 in) in height, but is known to grow much taller in favorable conditions.

The inflorescence is a narrow to wide open array of spikelets light in color when new and becoming darker and tinted purple to reddish with age.

Taxonomy

The Latin specific epithet of calycina is derived from calycinus meaning like a calyx or with a prominent calyx.[3] It was first described and published in Pl. Icon. Ined. on table 33 in 1789.[1]

Introduced / invasive species

The grass is an introduced species, including places such as; California, Egypt, Hawaii, India, New South Wales, New Zealand North, Portugal, South Australia, Spain, Tasmania, Texas, Tunisia, Victoria and Western Australia.[1] Sometimes becoming a noxious weed outside its native range.

It is an invasive species in California, where it is an invasive weed of chaparral and coastal sage scrub habitat along the southern and central coastal regions.[4] It was first introduced to Davis in the Sacramento Valley as a drought-tolerant range grass for grazing.[5][6]

It is also known as an invasive species and weed in parts of Australia.

The species has been added to the list of invasive alien species of Union Concern.[7] This means it is now forbidden to trade, import and breed this plant in all Member States of the European Union.[8]

References

  1. ^ a b c "Ehrharta calycina Sm. | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 13 January 2022.
  2. ^ Vermeulen, H.C.; Nel, J.A.J. (1988). "The bush Karoo rat Otomys unisulcatus on the Cape West coast". S. Afr. J. Zoo. 23 (2).
  3. ^ Harrison, Lorraine (2012). RHS Latin for Gardeners. United Kingdom: Mitchell Beazley. ISBN 184533731X.
  4. ^ California Invasive Plant Council: Ehrharta calycina profile
  5. ^ FAO Profile
  6. ^ "Grass Manual Treatment". Archived from the original on 2011-06-11. Retrieved 2009-05-13.
  7. ^ "European Regulation on IAS". June 2021. Archived from the original on 2017-07-29.
  8. ^ "European Regulation on IAS". June 2021. Archived from the original on 2015-09-10.

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Ehrharta calycina: Brief Summary

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Ehrharta calycina is a species of grass known by the common names perennial veldtgrass and purple veldtgrass.

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