Sisymbrium loeselii L.

  • Filed As

    Brassicaceae
    Sisymbrium loeselii L.

  • Collector(s)

    D. E. Atha 16062, 20 May 2019

  • Location

    United States of America. New York. New York Co. New York City. Manhattan. Upper West Side, West 66th Street and Riverside Boulevard.

  • Description

    Herbs ranging from about 20 centimeters tall to over 1 m tall, stems stout; basal leaves mostly withering now; stem with downward pointing stiff hairs; flowers yellow. Stem hairs penetrating the skin and irritating. Whole plant with mustard-like odor. This population occupies a narrow strip on the west side of Riverside Boulevard from just south of west 68th street to West 65th Street. It consists of dozens of plants (25 observed in iNaturalist). Some of the plants are in sidewalk cracks, some in tree pits, some on the edge a construction site along the fence, some around a playground. Since it is an annual and there are so many of them and scattered over such a large area in different situations, it is doubtful that they were all introduced this year. On this basis, it is probable that the population has existed undetected for at least one year at this site and perhaps longer. This is the first record for New York City. Phenology of specimen: Flower and Fruit.

  • Identifiers

    NY Barcode: 04229162

    Occurrence ID: fed2f848-180e-43b3-9919-f414d63b24e0

  • Related Objects

    Specimen - 04229080, D. E. Atha 16062, Sisymbrium loeselii L., Brassicaceae (124.0), Magnoliophyta; North America, United States of America, New York, New York Co.

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  • Kingdom

    Plantae

  • Division

    Magnoliophyta

  • Order

    Brassicales

  • Family

    Brassicaceae

  • All Determinations

    Sisymbrium loeselii L. det D. E. Atha, 2019

  • Region

    North America

  • Country

    United States of America

  • State/Province

    New York

  • County/Municipio

    New York Co.

  • City/Township

    New York City

  • Locality

    Manhattan. Upper West Side, West 66th Street and Riverside Boulevard

  • Coordinates

    40.7768, -73.9893

  • Geodetic Datum

    WGS84

  • Distribution

    Map all specimens of this taxon

The New York Botanical Garden I o*2
Brassicaceae
Sisymbrium loeselii L.
det. D. Atha, 2019
United States of America. New York. New York Co. New York City,
Manhattan Upper West Side, West 66th Street and Riverside Boulevard.
40.776848, -73.989265 (WGS84, ± 25m) ca 10 m elev.
Herbs ranging from about 20 centimeters tall to over 1 m tall, stems stout;
basal leaves mostly withering now; stem with downward pointing stiff
hairs- flowers yellow. Stem hairs penetrating the skin and irritating.
Whole plant with mustard-like odor. This population occupies a narrow
strip on the west side of Riverside Boulevard from just south of west 68th
street to West 65th Street. It consists of dozens of plants (25 observed in
iNaturalist). Some of the plants are in sidewalk cracks, some in tree pits,
some on the edge a construction site along the fence, some around a
playground. Since it is an annual and there are so many of them and
scattered over such a large area in different situations, it is doubtful that
they were all introduced this year. On this basis, it is probable that the
population has existed undetected for at least one year at this site and
perhaps longer. This is the first record for New York City.
Sample preserved in silica gel at NY.
Daniel A tha 16062
20 May 2019
04229162