Patuxent Research Refuge - Maryland
Catalog #: PRR001066
Taxon: Cirsium vulgare (Savi) Ten.
Family: Asteraceae
Determiner: Bill Harms (s.d.)
Taxon Remarks: Canada Thistle
ID References: Weakley 2015
Show Determination History
Collector: Bill Harms   6810   
Date: 2011-07-27
Verbatim Date: 27 July 2011
Additional Collectors: Zach Cravens, Emily Sadowski, Kyle Neuman
Locality: United States, Maryland, Anne Arundel, Laurel, Patuxent Research Refuge--North Tract--Thomas Branch Swamp area; BGE Power Line Right-of-way Access Road, 1.2 miles northwest of Duvall Bridge Road, past Thomas Branch Power Line Area (Thomas Branch Swamp) under tower
39.061287  -76.791468 +-20m.  WGS84
Verbatim Coordinates: 39.061287° -76.791468°
Elevation: 32 meters
Verbatim Elevation: 106 ft.
Habitat: Open shrub meadow in cleared power line right-of-way
Substrate: dry well-drained soil
Preparations: Imaged Voucher
Establishment Means: Alien
Specimen Images
Record Id: c1f55481-f65a-44de-944b-fe92aa294b3f
Occurrence ID (GUID): c1f55481-f65a-44de-944b-fe92aa294b3f
For additional information on this occurrence, please contact: Bill Harms (
Current Record
Patuxent Research Refuge - Maryland (USFWS:PRR)
Bill Harms 68102011-07-27
Catalog Number: PRR001066
GUID: c1f55481-f65a-44de-944b-fe92aa294b3f
Latest Identification: Cirsium vulgare
Identified by: Bill Harmss.d.

University of Maryland, Norton-Brown Herbarium (MARY)
Bill Harms 68102011-07-27
Catalog Number: MARY1051162
Latest Identification: Cirsium vulgare

No comments have been submitted
New Comment
Login to leave a comment.