City of Boulder Herbarium
Catalog #: CIBO-0000027
Secondary Catalog #: 4
Taxon: Amaranthus retroflexus L.
Family: Amaranthaceae
Determiner: W. A. Weber (7/30/1999)
Collector: Elaine Hill   35   
Date: 1990-08-23
Verbatim Date: 8/23/1990
Locality: United States, Colorado, Boulder, OSProperty: Van Vleet; Northwest corner of farm, 100 feet soth of S. Boulder Rd., 1/4 mile w of South Boulder Creek.
39.98574  -105.2255 +-250m.  WGS84
Verbatim Coordinates: T1S R70W sec 9 NE¼ of NE¼
Georeference Remarks: I placed the point in the NE 1/4 of the NE 1/4 of section 9, .25 miles west of South Boulder Creek and 100 feet south of South Boulder Road. RA; Geocoded 2/1/2019
Elevation: 1628 meters
Verbatim Elevation: 5340 ft.
Habitat: Dry, cobbly ground.
Occurrence Remarks: Common Name: Rough Pigweed;
Specimen Images
Record Id: 00a93b1c-71eb-4713-ac6a-111b582c5a7c
For additional information on this occurrence, please contact: Ann Lezberg (
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