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Overview

Distribution

Stenotaphrum secundatum (Walter) Kuntze:
American Samoa (Oceania)
Angola (Africa & Madagascar)
Argentina (South America)
Australia (Oceania)
Belize (Mesoamerica)
Bioko (Africa & Madagascar)
Burkina (Africa & Madagascar)
Bolivia (South America)
Brazil (South America)
Congo (Brazzaville) (Africa & Madagascar)
Chile (South America)
Cook Isl (Oceania)
Cameroon (Africa & Madagascar)
Colombia (South America)
Costa Rica (Mesoamerica)
Germany (Europe)
Ecuador (South America)
Mexico (Mesoamerica)
United States (North America)
Hawaiian Isl (Oceania)
Panama (Mesoamerica)
Fiji (Oceania)
Marshall Isl (Oceania)
Caribbean (Caribbean)
Gabon (Africa & Madagascar)
Midway Isl (Oceania)
Ghana (Africa & Madagascar)
Peru (South America)
Sierra Leone (Africa & Madagascar)
Kenya (Africa & Madagascar)
Tonga (Oceania)
French Guiana (South America)
Honduras (Mesoamerica)
New Zealand (Oceania)
Senegal (Africa & Madagascar)
Suriname (South America)
Canary Islands (Africa & Madagascar)
Nicaragua (Mesoamerica)
Portugal (Europe)
Uruguay (South America)
Equatorial Guinea (Africa & Madagascar)
Guyana (South America)
Liberia (Africa & Madagascar)
Italy (Europe)
Morocco (Africa & Madagascar)
France (Europe)
Mozambique (Africa & Madagascar)
New Caledonia (Oceania)
Society Isl (Oceania)
Spain (Europe)
Venezuela (South America)
Guatemala (Mesoamerica)
Ivory Coast (Africa & Madagascar)
Guinea (Africa & Madagascar)
Paraguay (South America)
Ethiopia (Africa & Madagascar)
South Africa (Africa & Madagascar)
Zaire (Africa & Madagascar)
Zimbabwe (Africa & Madagascar)
China (Asia)
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© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO 63110 USA

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Stenotaphrum glabrum var. americanum (Schrank) Döll:
Brazil (South America)
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© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO 63110 USA

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Stenotaphrum glabrum Trin.:
Brazil (South America)
Paraguay (South America)
Suriname (South America)
Uruguay (South America)
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National Distribution

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

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Physical Description

Morphology

Physical Description

Perennials, Terrestrial, not aquatic, Stolons or runners present, Stems trailing, spreading or prostrate, Stems nodes swollen or brittle, Stems mat or turf forming, Stems terete, round in cross section, or polygonal, Stems compressed, flattened, or sulcate, Stems branching above base or distally at nodes, Stem internodes solid or spongy, Stems with inflorescence less than 1 m tall, Stems, culms, or scapes exceeding basal leaves, Leaves mostly cauline, Leaves conspicuously 2-ranked, distichous, Leaves pseudo-petiolate, petiole attached to sheath, Leaves sheathing at base, Leaf sheath mostly open, or loose, Leaf sheath hairy , hispid or prickly, Leaf sheath or blade keeled, Leaf sheath and blade differentiated, Leaf blades disarticulating from sheath, deciduous at ligule, Leaf blades linear, Leaf blades 2-10 mm wide, Leaf blades mostly flat, Leaf blade margins folded, involute, or conduplicate, Leaf blades mostly glabrous, Ligule present, Ligule a fringe of hairs, Inflorescence terminal, Inflorescence a dense slender spike-like panicle or raceme, branches contracted, Inflorescence solitary, with 1 spike, fascicle, glomerule, head, or cluster per stem or culm, Inflorescence single raceme, fascicle or spike, Inflorescence with 2-10 branches, Inflorescence spikelets arranged in a terminal bilateral spike, Inflorescence branches 1-sided, Rachis dilated, flat, central axis to which spikelets are attached, Rachis enlarged, corky, Flowers bisexual, Spikelets pedicellate, Spikelets sessile or subsessile, Spikelets dorsally compressed or terete, Spikelet less than 3 mm wide, Spikelets with 1 fertile fl oret, Spikelets with 2 florets, Spikelets solitary at rachis nodes, Spikelets all alike and fertille, Spikelets bisexual, Spikelets falling with parts of disarticulating rachis or pedicel, Inflorescence branches deciduous, falling intact, Entire inflorescence falling intact, as a tumbleweed, Spikelets secund, in rows on one side of rachis, Spikelets closely appressed or embedded in concave portions of axis, Rachilla or pedicel glabrous, Glumes present, empty bracts, Glumes 2 clearly present, Glumes distinctly unequal, Glumes equal to or longer than adjacent lemma, Glumes 8-15 nerved, Lemmas thin, chartaceous, hyaline, cartilaginous, or membranous, Lemma 5-7 nerved, Lemma glabrous, Lemma apex acute or acuminate, Lemma awnless, Lemma margins thin, lying flat, Lemma straight, Palea present, well developed, Palea membranous, hyaline, Palea longer than lemma, Palea 2 nerved or 2 keeled, Stamens 3, Styles 1, Stigmas 2, Fruit - caryopsis.
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Dr. David Bogler

Source: USDA NRCS PLANTS Database

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Comments

This grass is widely cultivated in the moist tropics as a lawn grass (St. Augustine Grass).
  • Flora of China @ eFloras.org
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Description

Perennial, stoloniferous and forming a dense sward. Culms much branched, flowering shoots 10–30 cm tall. Leaf sheaths strongly keeled, often grouped in flabellate clusters; leaf blades broadly linear, folded when young, up to 15 × 0.4–1 cm, apex obtuse; ligule ca. 0.5 mm. Inflorescence 5–12 cm, slender, cylindrical; axis corky, disarticulating into segments at maturity; racemes 4–10 mm, reduced to 1–3 spikelets embedded in one face of the rachis, alternating on either side of the sinuous midrib; raceme rachis a stout pointed appendage within the axis cavity. Spikelets lanceolate, 4–5 mm, acute; lower glume up to 1/4 as long as spikelet; upper glume as long as spikelet; lower floret staminate, lemma cartilaginous, 3-veined, palea well developed; upper lemma papery, subequal to spikelet, smooth, acute. Fl. and fr. summer.
  • Flora of China @ eFloras.org
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Diagnostic Description

Synonym

Ischaemum secundatum Walter, Fl. Carol. 249. 1788.
  • Flora of China @ eFloras.org
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Ecology

Habitat

Habitat & Distribution

Cultivated as lawn grass. Hong Kong [tropical and subtropical shores on both sides of Atlantic Ocean, extending around S Africa to Mozambique].
  • Flora of China @ eFloras.org
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Molecular Biology and Genetics

Barcode

Locations of barcode samples

Collection Sites: world map showing specimen collection locations for Stenotaphrum secundatum
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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
                                                             
Specimen Records:4
Specimens with Sequences:1
Specimens with Barcodes:0
Public Records:0
Species:1
Species With Barcodes:1
  
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Source: Barcode of Life Data Systems (BOLD)

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Molecular Biology

Statistics of barcoding coverage: Stenotaphrum secundatum

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 4
Species: 4
Species With Barcodes: 1

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Source: Barcode of Life Data Systems (BOLD)

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Conservation

Conservation Status

National NatureServe Conservation Status

United States

Rounded National Status Rank: NU - Unrankable

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NatureServe Conservation Status

Rounded Global Status Rank: G5 - Secure

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Wikipedia

St. Augustine Grass

St. Augustine Grass or Buffalo Grass (Stenotaphrum secundatum) (also known as Charleston Grass in South Carolina) is a warm season lawn grass that is popular for use in tropical and subtropical regions. It is a medium to high maintenance grass that forms a thick, carpetlike lawn, crowding out most weeds and other grasses.

Contents

Characteristics

Sample of Palmetto St. Augustine with St. Augustine Decline infection.

St. Augustine is a dark green grass with broad, flat blades. It spreads by above ground stolons, commonly known as "runners" and forms a dense layer of grass.

The grass originated in North America,[1] and it occurs on both sides of the Atlantic Ocean,[2] including much of the southeastern United States, including Texas,[3][4] Mexico,[2] and Central and South America.[2] It has escaped cultivation in California,[5] many Pacific islands,[2] and New Zealand.[2]

St. Augustine grass is one type of grass that commonly exists in most Caribbean and Mediterranean areas. It breeds best in tropical climates. It is often seen in lagoons, marshes, shorelines and wherever there is a good amount of moisture.

Planting and propagation

Only recently has commercially valuable viable seed for St. Augustine become available, so it has typically been propagated by plugs, sprigs, or sod. Once the grasses are cultivated, then they can propagate on their own.

St. Augustine can grow in a wide range of soil types with 5.0 to 8.5 pH. St. Augustine grasses will be in full bloom between springtime and summer. St Augustine grass produces runners that allow it to grow and spread.

Uses

St. Augustine grasses are popularly used in pastures and ranches. They are also a popular grass covers for home lawns. It rivals the reputation of Bermuda grass, although St. Augustine grasses are somewhat less drought tolerant.

Varieties

St. Augustine comes in several varieties:

  • Captiva(R). Released in 2008. Developed by the University of Florida for its Chinch bug[disambiguation needed ] resistance and dwarf profile which requires less mowing.
  • Floratine. Released 1959. Darker color, finer texture, tolerated lower temperatures and lower mowing.
  • Floratam. Released 1972. Resists SAD and chinch bugs[disambiguation needed ]. Not as cold- or shade-tolerant.
  • Palmetto. Released in 1989. Selected for its shade tolerance and cold tolerance.
  • Raleigh. Released 1980. SAD resistant and shade tolerant, but susceptible to chinch bugs.
  • Sapphire. Released 2004. Selected from Australia for its dark blue green color and rapid lateral growth.
  • Seville. Released 1980. Finer texture than Floratam, but shared Floratam's strengths and weaknesses.
  • Texas Common. May be the original St. Augustine. It has fallen out of favor due to its susceptibility to the incurable St. Augustine Decline (SAD) virus.

References

Notes

Bibliography

External links

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