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Overview

Comprehensive Description

Miscellaneous Details

"Notes: Western Ghats, Higher Altitude, Native of Tropical America"
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© India Biodiversity Portal

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Description

Hairless, ± succulent, short-lived shrub or small tree, to 6 m. Young growth blue-green, sometimes with a waxy bloom. Leaves broadly lanceolate to elliptic or spathulate, thickly-textured, glaucous or green; petiole not winged. Flowers erect or pendent, in loose panicle-like inflorescences. Corolla 3-4 cm long, green, becoming yellow or orange, tube narrow, with a slight swelling near the apex and constricted slightly above and below the swelling. Fruit oblong-ellipsoid, 8-12 mm long, hairless, splitting above into 4 valves.
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© Mark Hyde, Bart Wursten and Petra Ballings

Source: Flora of Zimbabwe

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Derivation of specific name

glauca: glaucous, bluish-green
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© Mark Hyde, Bart Wursten and Petra Ballings

Source: Flora of Zimbabwe

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Distribution

National Distribution

United States

Origin: Exotic

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Tamil Nadu: Nilgiri
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Distribution in Egypt

Nile region, Oases, Mediterranean region, Eastern desert and Sinai.

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Source: Bibliotheca Alexandrina - EOL Ar

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Global Distribution

Native to Argentina, naturalized in warm regions.

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Worldwide distribution

Native to Argentina and possibly Bolivia, now extending to S and C America and widely distributed as a weed in warm and warm-temperate regions of both hemispheres
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© Mark Hyde, Bart Wursten and Petra Ballings

Source: Flora of Zimbabwe

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Physical Description

Morphology

Description

Shrubs or small trees 2-6 m tall, glabrescent. Petiole slender, 3-12 cm; leaf blade ovate, 5-25 cm, leathery, base obtuse to cordate, entire, apex obtuse or acute, glaucous, subleathery. Inflorescences many-flowered, lax panicles. Pedicel 3-12 mm. Calyx tubular, 1-1.5 cm; lobes deltate, acute, equal. Corolla yellow to red, tubular, 2.5-4.5 cm; lobes short. Stamens subequal, included. Capsules ellipsoid, 0.7-1.5 cm. Seeds brown, ca. 0.5 mm.
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© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA

Source: Missouri Botanical Garden

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Diagnostic Description

Diagnostic

Habit: Shrub
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Synonym

Nicotiana glauca var. angustifolia Comes; N. glauca var. grandiflora Comes.
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© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA

Source: Missouri Botanical Garden

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Ecology

Habitat

Habitat & Distribution

Cultivated in China [native of Argentina].
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Nicotiana glauca

The following is a representative barcode sequence, the centroid of all available sequences for this species.


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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Statistics of barcoding coverage: Nicotiana glauca

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 6
Specimens with Barcodes: 18
Species With Barcodes: 1
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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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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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Wikipedia

Nicotiana glauca

Nicotiana glauca is a species of wild tobacco known by the common name tree tobacco. Its leaves are attached to the stalk by petioles (many other Nicotiana species have sessile leaves), and its leaves and stems are neither pubescent nor sticky like Nicotiana tabacum. It grows to heights of more than two meters.

Tree tobacco is native to South America but it is now widespread as an introduced species on other continents. It is a common roadside weed in the southwestern United States, and an invasive plant species in California native plant habitats.

The plant is used for a variety of medicinal purposes and smoked by Native American groups.[1] The Cahuilla Indians used leaves interchangeably with other tobacco species in hunting rituals and as a poultice to treat swellings, bruises, cuts, wounds, boils, sores, inflamed throat, and swollen glands. Contains the toxic alkaloid nicotine. Ingestion of the leaves can be fatal. [2] It is being investigated for use as a biofuel.[3]

Gallery[edit]

References[edit]

  1. ^ Ethnobotany
  2. ^ Foster, Steven (2002). Western Medicinal Plants and Herbs. Boston, NY: Houghton Mifflin Company. p. 339. ISBN 0-395-83806-1. 
  3. ^ Prickly Pears and Tree Tobacco for Ethanol Production in Semi-Arid Regions
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