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Needle Leaf Burrobush

Ambrosia monogyra (Torr. & A. Gray) Strother & B. G. Baldwin

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Ambrosia monogyra may occur in western Nevada.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
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Flora of North America Vol. 21: 10, 12 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Description

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Shrubs, 30–150(–400) cm. Stems erect. Leaves mostly alternate; petioles 0; blades mostly filiform, 5–30(–65+) × 0.5–1.5 mm, sometimes with 3(–5+) filiform lobes, abaxial faces glabrous or glabrate, often vernicose, adaxial faces densely scabrellous (white). Pistillate heads ± intermixed with staminates; florets 1. Staminate heads: peduncles 0–0.5 mm; involucres ± cup-shaped, 2–4 mm diam., ± glabrate, ± vernicose; florets 5–12+. Burs: bodies fusiform to pyriform, 4–5 mm, stipitate-glandular, wings 7–12+, mostly around middles, oblanceolate to cuneiform, 2–3 × 1–2 mm. 2n = 36.
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cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 21: 10, 12 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
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Synonym

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Hymenoclea monogyra Torrey & A. Gray, Mem. Amer. Acad. Arts, n. s. 4: 79. 1849
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 21: 10, 12 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
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Comprehensive Description

provided by North American Flora
Hymenoclea monogyra T. & G.; (*Torr. in Emory, Notes Mil. Rec 143, hyponym. 1848) A. Gray, Mem. Am. Acad. II. 4: 79. 1849.
A shrub 1-4 m. high, with straw-colored or gray bark; branches ascending, puberulent at first; leaves filiform, or the lower with filiform divisions 2-5 cm. long, about 0.5 mm. broad, puberulent, and somewhat tomentulose beneath, grooved below; heads in small axillary clusters, the stamina te 812-flowered, usually mixed with the pistillate ones; involucre turbinate, 3-4 mm. broad, puberulent; lobes 5 or 6, ovate, indistinctly toothed; paleae of the receptacle with linear-spatulate tips; corolla funnelform, membranous, puberulent; lobes triangular; style nearly as long as the stamens; stigma erose; pistillate heads subtended by scale-like, ovate, erose bractlets; body of the fruit oblanceolate, fusiform. 4-5 mm. long, with a single series of 7-12 wings above the middle; beak hyaline, 2 mm. long; wings scarious, elliptic, obovate, or oblanceolate, acute and erose.
Type locality: Valley of the Gila [Arizona].
Distribution: Western Texas and Coahuila to southern California, Lower California, and Sinaloa.
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bibliographic citation
Per Axel, Rydberg. 1922. CARDUALES; AMBROSIACEAE, CARDUACEAE. North American flora. vol 33(1). New York Botanical Garden, New York, NY
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Ambrosia monogyra

provided by wikipedia EN

Ambrosia monogyra is a species of flowering plant in the sunflower family commonly known as the singlewhorl burrobrush,[2] leafy burrobush, slender burrobush,[3] and desert fragrance.[4] Ambrosia monogyra is native to North America and is typically found in canyons, desert washes, and ravines throughout arid parts of the southwestern United States and northern Mexico. This species has green, threadlike leaves that emit a distinctive odor when crushed, and flowers from August to November. The fruits have distinctive wings in their middle that aid in dispersion through wind and water.[4]

Description

Amsrosia monogyra is a shrub 1–4 m (3.3–13.1 ft) tall. The leaves are very thin and thread-like, alternately arranged, and sometimes divided into thread-like lobes.[5] The staminate flowers have translucent white corollas and the pistillate flowers are rounded, fruit-bearing structures. The fruit is an achene with a single whorl of several papery wings.

Distribution and habitat

The plant is native to the southwestern United States, including the states of California, Arizona, New Mexico, Texas, and northern Mexico, where it is found in Baja California, Baja California Sur, Chihuahua, Sinaloa, Sonora.[5][6]

Habitats it is found in include California chaparral and woodlands in the Peninsular Ranges of Southern California and northern Baja California.[7] The plant also grows in washes and ravines in desert areas.[5][8][9]

References

  1. ^ The Plant List Ambrosia monogyra (Torr. & A.Gray) Strother & B.G.Baldwin
  2. ^ USDA, NRCS (n.d.). "Hymenoclea monogyra". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 18 May 2015.
  3. ^ Rebman, J. P.; Gibson, J.; Rich, K. (2016). "Annotated checklist of the vascular plants of Baja California, Mexico" (PDF). San Diego Society of Natural History. 45: 43–44.
  4. ^ a b Rebman, Jon P.; Roberts, Norman C. (2012). Baja California Plant Field Guide. San Diego: Sunbelt Publications. p. 129. ISBN 978-0-916251-18-5.
  5. ^ a b c Flora of North America Vol. 21 Page 12 Ambrosia monogyra (Torrey & A. Gray) Strother & B. G. Baldwin, Madroño. 49: 143. 2002
  6. ^ Calflora taxon report, University of California, Ambrosia monogyra Torr. & Gray singlewhorl burrobrush
  7. ^ Calflora: Ambrosia monogyra
  8. ^ Bonap.net: Ambrosia monogyra
  9. ^ Vascular Plants of the Gila Wilderness: Ambrosia monogyra

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Ambrosia monogyra: Brief Summary

provided by wikipedia EN

Ambrosia monogyra is a species of flowering plant in the sunflower family commonly known as the singlewhorl burrobrush, leafy burrobush, slender burrobush, and desert fragrance. Ambrosia monogyra is native to North America and is typically found in canyons, desert washes, and ravines throughout arid parts of the southwestern United States and northern Mexico. This species has green, threadlike leaves that emit a distinctive odor when crushed, and flowers from August to November. The fruits have distinctive wings in their middle that aid in dispersion through wind and water.

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Wikipedia authors and editors
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