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Small Cordgrass

Sporobolus maritimus (Curtis) P. M. Peterson & Saarela

Associations

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Foodplant / feeds on
ascocarp of Buergenerula spartinae feeds on Spartina maritima

Foodplant / pathogen
ergot of Claviceps purpurea var. spartinae infects and damages live ovary of Spartina maritima

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Physical Description

provided by USDA PLANTS text
Perennials, Terrestrial, not aquatic, Rhizomes present, Rhizome elongate, creeping, stems distant, Stems nodes swollen or brittle, Stems erect or ascending, Stems solitary, Stems caespitose, tufted, or clustered, Stems terete, round in cross section, or polygonal, Stem internodes solid or spongy, 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 at summit, throat, or collar, 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 solitary, with 1 spike, fascicl e, glomerule, head, or cluster per stem or culm, Inflorescence a panicle with narrowly racemose or spicate branches, Inflorescence a panicle with digitately arranged spicate branches, Inflorescence with 2-10 branches, Inflorescence branches 1-sided, Inflorescence branches paired or digitate at a single node, Inflorescence branches terminating in bristle or point, Rachis angular, Flowers bisexual, Spikelets sessile or subsessile, Spikelets laterally compressed, Spikelet less than 3 mm wide, Spikelets with 1 fertile floret, Spikelets solitary at rachis nodes, Spikelets all alike and fertille, Spikelets bisexual, Spikelets disarticulating below the glumes, Spikelets secund, in rows on one side of rachis, Rachilla or pedicel glabrous, Glumes present, empty bracts, Glumes 2 clearly present, Glumes distinctly unequal, Glumes equal to or longer than adjacent lemma, Glume equal to or longer than spikelet, Glumes keeled or winged, Glume surface hairy, villous or pilose, Glumes 1 nerv ed, Glumes 3 nerved, Lemmas thin, chartaceous, hyaline, cartilaginous, or membranous, Lemma 1 nerved, Lemma body or surface hairy, Lemma apex acute or acuminate, Lemma awnless, Lemma margins thin, lying flat, Lemma straight, Palea present, well developed, Palea membranous, hyaline, Palea about equal to lemma, Palea longer than lemma, Palea 2 nerved or 2 keeled, Stamens 3, Styles 2-fid, deeply 2-branched, Stigmas 2, Fruit - caryopsis.
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Sporobolus maritimus

provided by wikipedia EN

Sporobolus maritimus, or synonymously as Spartina maritima, the small cordgrass,[2] is a species of cordgrass native to the coasts of western and southern Europe and western Africa, from the Netherlands west across southern England to southern Ireland, and south along the Atlantic coast to Morocco and also on the Mediterranean Sea coasts. There is also a disjunct population on the Atlantic coasts of Namibia and South Africa.

Description

Sporobolus maritimus is a coarse, robust, herbaceous perennial plant growing gregariously from a creeping rootstock. The plant is 20 to 70 cm (8 to 28 in) tall, green in spring and summer, and turning light brown in autumn and winter. The leaves are slender, 10 to 40 cm (4 to 16 in) long, and 0.5 to 1 cm (0.2 to 0.4 in) broad at the base, tapering to a blunt point. The inflorescence is a group of two or three unbranched spikes up to 15 cm (6 in) long, each with several unstalked, one-flowered, downy spikelets about 1.25 cm (0.5 in) long, which are produced on all sides of the stalk and closely pressed against it. The pointed stem tip does not overtop the highest spikelet. The flowers are greenish, turning yellowish-brown by the winter.[3]

Distribution and habitat

Sporobolus maritimus is native to the west-facing coasts of Europe and North Africa. It occupies a range of habitats including very soft mud and shingle, in minimally exposed areas, away from strong wave action. It occurs on the seaward margins of saltmarshes and creeks and may be plentiful in dried up pools in the upper parts of saltmarshes. In the British Isles, it occurs in estuaries in Essex and in the Solent.[4]

Hybridisation and decline

When the related American species Sporobolus alterniflorus (smooth cordgrass) was introduced to southern England in about 1870, it hybridised with S. maritimus to give the hybrid Sporobolus × townsendii. This then gave rise to a new allotetraploid species Sporobolus anglicus (common cordgrass), which is much more vigorous, and has now largely ousted S. maritimus from much of its native range in Western Europe.[4]

References

  1. ^ "Sporobolus maritimus (Curtis) P.M.Peterson & Saarela". Plants of the World Online. Kew Science. Retrieved 10 November 2020.
  2. ^ USDA, NRCS (n.d.). "Spartina maritima". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 24 November 2015.
  3. ^ McClintock, David; Fitter, R.S.R. (1961). The Pocket Guide to Wild Flowers. London: Collins. pp. 286–287.
  4. ^ a b "Spartina swards (Spartinion maritimae)". JNCC. Retrieved 17 March 2020.
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Sporobolus maritimus: Brief Summary

provided by wikipedia EN

Sporobolus maritimus, or synonymously as Spartina maritima, the small cordgrass, is a species of cordgrass native to the coasts of western and southern Europe and western Africa, from the Netherlands west across southern England to southern Ireland, and south along the Atlantic coast to Morocco and also on the Mediterranean Sea coasts. There is also a disjunct population on the Atlantic coasts of Namibia and South Africa.

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