Overview

Distribution

National Distribution

United States

Origin: Exotic

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Distribution in Egypt

Nile Valley North of Nubia (Location: Delta), Libyan Desert Oases, Nubian Desert Oases, Mareotic Sector, Isthmic Desert, Nile Valley North of Nubia.

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Global Distribution

Mediterranean region, Along the Atlantic  coast to Southwest England.

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introduced; Calif., Oreg.; sw Europe (Mediterranean region).
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Physical Description

Morphology

Description

Plants annual, ± delicate, 6-25+ cm, often densely stipitate-glandular, at least in inflorescence. Taproots ± filiform. Stems erect to spreading or sprawling, usually much-branched proximally; main stem 0.5-1 mm diam. proximally. Leaves: stipules usually inconspicuous, dull white to tan, broadly triangular, 1.5-4.5 mm, apex acute to short-acuminate; blade ± linear, 1-4.2 cm, at least moderately fleshy, apex apiculate to spine-tipped; axillary leaves absent or 1-2 per cluster. Cymes simple to 6+-compound. Pedicels often oriented to 1 side in fruit. Flowers: sepals connate 0.3-0.6 mm proximally, lobes often 3-veined, ovate to elliptic-oblong, 2.2-3.5 mm, to 4.5 mm in fruit, margins 0.2-0.5 mm wide, apex acute to rounded; petals white or pink to rosy, ovate to obovate, 0.8-1 times as long as sepals; stamens 8-10; styles 0.4-0.6 mm. Capsules greenish, 3(-4) mm, 1-1.2 times as long as sepals. Seeds light brown, with submarginal groove, broadly ovate, plump, 0.4-0.6 mm, somewhat shiny, smooth to minutely roughened, margins with peglike papillae (40×); wing absent. 2n = 18? (Africa), 36 (Europe).
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Size

Height: 5-25 cm.

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Diagnostic Description

Synonym

Alsine bocconi Scheele, Flora 26: 431. 1843
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Type Information

Isotype for Tissa luteola Greene
Catalog Number: US 467216
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): A. A. Heller
Year Collected: 1903
Locality: Pacific Grove., Monterey, California, United States, North America
  • Isotype: Greene, E. L. 1903. Pittonia. 5: 114.
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Isotype for Tissa luteola Greene
Catalog Number: US 668988
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): A. A. Heller
Year Collected: 1903
Locality: Pacific Grove., Monterey, California, United States, North America
  • Isotype: Greene, E. L. 1903. Pittonia. 5: 114.
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Ecology

Habitat

Waste ground.

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Salt marshes, alkaline places, sandy soils; 0-400m.
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Life History and Behavior

Cyclicity

Flowering/Fruiting

Flowering spring.
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Life Expectancy

Annual or short-lived perennial.

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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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Notes

Comments

The spelling of the epithet bocconi, often “corrected” to bocconii, is debatable. It commemorates Paolo Boccone, suggesting a correction to bocconei, but he also used the Latinized form Bocconus, allowing bocconi. We have used bocconi, following the first usage by Scheele.
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