Overview

Distribution

National Distribution

United States

Origin: Exotic

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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introduced; Ala., Ga., La., Tex.; Europe.
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Physical Description

Morphology

Description

Plants annual, delicate, 5-15 cm, stipitate-glandular throughout. Taproots slender. Stems erect to ascending, simple to diffusely branched proximally and distally; main stem occasionally prostrate, 0.2-1.5 mm diam. proximally. Leaves: stipules inconspicuous, silvery to dull tan, broadly triangular, 1.4-2.4 mm, shorter than wide, apex acuminate; blade linear, 0.5-3.5 cm, somewhat fleshy, apex blunt to apiculate; axillary leaf cluster usually absent. Cymes commonly 4-8+-compound. Pedicels reflexed and oriented to 1 side in fruit. Flowers: sepals connate 0.2-0.3 mm proximally, lobes 1-3-veined, lanceolate to ovate, 2.5-3.6 mm, to 4 mm in fruit, margins 0.1-0.5 mm wide, apex rounded; petals white to pink or rosy, lanceolate, 0.4-0.6 times as long as sepals; stamens 1-4(-5); styles 0.3-0.4 mm. Capsules greenish to tan, 2.8-4 mm, 0.9-1.4 times as long as sepals. Seeds reddish brown to blackish, silver tinged, with submarginal groove, pyriform, ± compressed, 0.5-0.7(-0.8) mm, shiny, slightly roughened, with dense, gland-tipped papillae and appearing echinate (30×); wing usually absent, whitish to reddish brown, 0.1-0.2 mm wide, margins irregular and not papillate. 2n = 18, 36 (both Europe).
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Ecology

Habitat

Dunes, clay flats, sandy river banks; 0-20+m.
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Life History and Behavior

Cyclicity

Flowering/Fruiting

Flowering spring.
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Conservation

Conservation Status

National NatureServe Conservation Status

United States

Rounded National Status Rank: NNA - Not Applicable

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NatureServe Conservation Status

Rounded Global Status Rank: GNR - Not Yet Ranked

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Names and Taxonomy

Taxonomy

Comments: According to Walt Fertig (Wyoming HP, 1998), sometimes referred to as Spergularia diandra. Eurasian.

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