Spergula arvensis L. (1753)
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Plants glabrous or, often, glan-dular. Stems usually branched proximally, 10-50+ cm. Leaf blades usually appearing terete, 1.5-3(-5) cm, margins often revolute, forming abaxial channel. Pedicels erect to ascending, reflexed, secund in fruit. Flowers: sepals 3.5-5 mm; petals ovate, 3/ 4-1 times as long as sepals in flower, apex obtuse; stamens usually 10. Capsule valves 3.5-5 mm. Seeds sometimes keeled or winged, subglobose, 1-1.1 mm wide, surface minutely roughened or obscurely low-tuberculate (50×), covered with white, club-shaped papillae in part or throughout (packing of seeds in capsule may prevent papillae development in spots), wings white, ± 0.1 mm wide. 2n = 18, 36 (both Europe).
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Rounded Global Status Rank: GNR - Not Yet Ranked
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900 m
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This article does not cite any references or sources. (December 2009) |
Spergula arvensis (corn spurrey) is a species of the genus Spergula.
It is the county flower of Montgomeryshire in the United Kingdom.
It is considered an agricultural weed in western Canada.
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Plants annual. Stems (7--)13--50(--60) cm, pilose, apically glandular hairy. Stipules triangular-ovate, small, soon deciduous. Leaf blade linear, (1.1--)1.5--4 cm × 0.5--0.7 mm, abaxially channeled, glabrous or glandular pubescent, apex acute. Cymes lax, at first dichasial, upper branches monochasial. Pedicel 1.5--2.5 cm, slender. Sepals ovate, 3(--5) mm, glandular pub-scent, apex subacute to obtuse. Petals obovate, slightly shorter than to slightly longer than sepals, apex obtuse. Stamens 10, shorter than ovary. Ovary ovoid; style extremely short; stigmas 5. Capsule ovoid, ca. 4 mm in diam., slightly longer than sepals. Seed gray-black, subglobose, slightly compressed, 1--2 mm, both surfaces often with minute, pale, club-shaped papillae, margin with narrow wing. Fl. Jun--Jul, fr. Jul--Aug.
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Spergula arvensis is often a significant weed in sandy crop lands, but it is sometimes used as a forage crop in areas with poor, sandy soils; it was intentionally introduced to Crawford County, Michigan, in 1888 (O. Clute and O. Palmer 1893). Historical collections are known also from Kansas, Nebraska, North Dakota, and South Dakota, where Spergula arvensis may have been introduced but apparently did not persist.
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"Erect, branched herb; branch (lets) clustered at base. Leaves opposite, appearing whorled, linear, dissected, to 3 x 0.4 cm, glabrous, sessile, canaliculate; base obtuse, sheathing, apex acute; stipules in whorls, ovate, 1 x 1 mm. Cymes in terminal dichasia to 15 cm, many flowered; peduncle to 8 cm. Flower to 3 mm wide; pedicel to 2 cm. Sepals 5, free, lanceolate, 3 x 1 mm, glandular without. Petals 5, white, entire, ovate, 3 x 1.5 mm. Stamens 5; filaments subulate, flat; anthers ovoid. Ovary globose, 1-celled; ovules numerous, axile; styles 5, free, recurved. Capsule globose, 5 x 5 mm, 5-valved; seeds numerous, ovoid."
This plant is a weed of wheat fields, and is used as fodder.
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Habit: Herb
Comments: No varieties recognized in this species by Kartesz (1999).
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