Conyza canadensis

ClassificationFlowering Plants
FamilyAsteraceae
Family (Traditional)Asteraceae
GenusConyza
SpeciesConyza canadensis (L.) Cronquist
Common NameHorseweed
Growth HabitForb
DurationAnnual
Plant Notes**
C value 0
StatusNative, FAC (NWPL)
Specimens View and Download Specimen Details »

** Not applicable or data not available.

Subspecies and Varieties

Not applicable or data not available.

Synonyms

No synonyms exist for this species.

Specimens and Distribution

This species has been reported in the following counties by the herbaria listed. An overview of the individual specimens are provided in the table that follows. Click on an accession number to view full details; click on column headers to sort.

Counties included on distribution map: Boone, Brown, Carroll, Cass, Clinton, Crawford, Delaware, Elkhart, Fayette, Floyd, Greene, Hamilton, Hendricks, Howard, Jennings, Marion, Marshall, Miami, Ohio, Orange, Parke, Porter, Pulaski, Putnam, Ripley, Rush, Starke, Steuben, Switzerland, Tipton, Vermillion, Wabash

Counties represented by specimen data listed below:

Herbaria represented by specimen data listed below: BUT

Range of years during which specimens were collected: 1910 - 2004

Accession No. (click for full details)
County
Coll. Date
Collector &
Collection No.
Herbarium &
Herbarium Name Used
Image
67983 Boone 04 Sep 1943 Ray C. Friesner
17933
BUT
Conyza canadensis (L.) Cronq. var. canadensis
50785 Brown 12 Oct 1940 Ray C. Friesner
15007
BUT
Conyza canadensis (L.) Cronq. var. canadensis
32323 Carroll 16 Aug 1936 Wm. Daily
BUT
Conyza canadensis (L.) Cronq. var. canadensis
60820 Carroll 07 Aug 1941 Charles M. Ek
BUT
Conyza canadensis (L.) Cronq. var. canadensis
73529 Carroll 06 Oct 1945 Ray C. Friesner
20100
BUT
Conyza canadensis (L.) Cronq. var. canadensis
53564 Cass 16 Aug 1941 Ray C. Friesner
16151
BUT
Conyza canadensis (L.) Cronq. var. canadensis
58520 Clinton 02 Sep 1939 Charles M. Ek
BUT
Conyza canadensis (L.) Cronq. var. canadensis
52212 Crawford 02 Sep 1940 Ray C. Friesner
14813
BUT
Conyza canadensis (L.) Cronq. var. pusilla (Nutt.) Cronq.
71598 Delaware 30 Sep 1944 Ray C. Friesner
18776
BUT
Conyza canadensis (L.) Cronq. var. canadensis
54053 Elkhart 02 Aug 1941 Ray C. Friesner
15839
BUT
Conyza canadensis (L.) Cronq. var. canadensis
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