Kathryn Kalmbach Herbarium
Catalog #: KHD00070194
Taxon: Onopordum acanthium L.
Family: Asteraceae
Determiner: Christina Alba; Audrey Dignan (2018)
Collector: Christina Alba   1354   
Date: 2018-06-07
Verbatim Date: 6/7/2018
Additional Collectors: Audrey Dignan; Sue Janssen
Locality: USA, Colorado, Denver, Along the High Line Canal Trail at Mile Marker 40. 380 meters SW of intersection of E Iliff Ave and S Monaco Pkwy.
39.67233221  -104.9158749  WGS84
Verbatim Coordinates: 39.6723 -104.91602
Location Remarks: HLC40
Elevation: 1667 meters
Verbatim Elevation: 1667m
Habitat: Flat to Rolling Plains ecoregion; earthen canal and adjacent recreational trail ("Urban Refuge" zone, High Line Canal trail), embedded within an urbanized landscape that was historically shortgrass steppe. Vegetation composition changes from ruderal grasses and forbs and planted/escaping garden plants (upland areas by trail) to water-loving trees and shrubs and associated understory (lowland areas near canal). Representative trees and shrubs: Populus deltoides, Salix fragilis, Ulmus pumila, Fraxinus pennsylvanica, Prunus virginiana, Rhamnus cathartica, Salix exigua. Grasses: managed (planted/mowed) species such as Poa pratensis and Bromus inermis mixed with native Buchloe dactyloides and Bouteloua gracilis; with Phalaris arundinacea and Carex emoryi along canal. Forbs: Heterotheca villosa, several species of Symphyotrichum, Oenothera, and Mirabilis, Solidago gigantea, Erodium cicutarium, Onopordum acanthium, Dipsacus laciniatus, Linaria dalmatica.
Substrate: silt, clay
Description: Approximate height: 1. 2 meters. Flowers: purple. Habit: forb. Life cycle habit: biennial. Origin: introduced. Estimated frequency within viewshed: common (101-500).
Reproductive Condition: flower
Occurrence Remarks: High Line Canal Ecological Survey. Additional data describing plant abundance and pollinator community is available. Tissue sample collected from same individual. Army Corps of Engineers Wetland Indicator Value: not available (Lichvar et al. 2012). Coefficient of conservatism value: * (non-native species) (Floristic Quality Assessment Indices for Colorado Plant Communities, doi:10.13140/RG.2.1.2634.8248).
Specimen Images
Rights Holder: Public Domain
Access Rights: Public Domain
Record Id: 75dc6b20-1883-4e6d-80cb-80d732e18e7b
Occurrence ID (GUID): 75dc6b20-1883-4e6d-80cb-80d732e18e7b
For additional information on this occurrence, please contact: Rick Levy, Database Associate (richard.levy@botanicgardens.org)
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