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
150457
384
BUT
Conyza canadensis (L.) Cronquist
60820 Carroll 07 Aug 1941 Charles M. Ek
BUT
Conyza canadensis (L.) Cronq. var. canadensis
64067 Miami 11 Aug 1942 Charles M. Ek
BUT
Conyza canadensis (L.) Cronq. var. canadensis
58520 Clinton 02 Sep 1939 Charles M. Ek
BUT
Conyza canadensis (L.) Cronq. var. canadensis
64344 Tipton 27 Sep 1942 Charles M. Ek
BUT
Conyza canadensis (L.) Cronq. var. canadensis
43381 Howard 01 Oct 1936 Chas. W. Ek
BUT
Conyza canadensis (L.) Cronq. var. canadensis
43420 Howard 01 Oct 1936 Chas. W. Ek
BUT
Conyza canadensis (L.) Cronq. var. canadensis
20957 Putnam 12 Jun 1910 Earl J. Grimes
93
BUT
Conyza canadensis (L.) Cronq. var. pusilla (Nutt.) Cronq.
92810 Porter 16 Jul 1922 Marcus W. Lyon, Jr.
BUT
Conyza canadensis (L.) Cronq. var. canadensis
151218 Parke 05 Aug 2004 R. K. Scott
473
BUT
Conyza canadensis (L.) Cronq. var. canadensis
54053 Elkhart 02 Aug 1941 Ray C. Friesner
15839
BUT
Conyza canadensis (L.) Cronq. var. canadensis
53206 Steuben 02 Aug 1941 Ray C. Friesner
15942
BUT
Conyza canadensis (L.) Cronq. var. canadensis
53184 Wabash 09 Aug 1941 Ray C. Friesner
16012
BUT
Conyza canadensis (L.) Cronq. var. canadensis
74435 Vermillion 11 Aug 1945 Ray C. Friesner
19496
BUT
Conyza canadensis (L.) Cronq. var. canadensis
11773 Switzerland 15 Aug 1932 Ray C. Friesner
5227
BUT
Conyza canadensis (L.) Cronq. var. canadensis
11813 Ohio 15 Aug 1932 Ray C. Friesner
5234
BUT
Conyza canadensis (L.) Cronq. var. canadensis
53564 Cass 16 Aug 1941 Ray C. Friesner
16151
BUT
Conyza canadensis (L.) Cronq. var. canadensis
67649 Marion 21 Aug 1943 Ray C. Friesner
17901
BUT
Conyza canadensis (L.) Cronq. var. canadensis
62830 Hamilton 22 Aug 1942 Ray C. Friesner
17304
BUT
Conyza canadensis (L.) Cronq. var. canadensis
2965 Floyd 27 Aug 1923 Ray C. Friesner
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.
8598 04 Sep 1931 Ray C. Friesner
3523
BUT
Conyza canadensis (L.) Cronq. var. canadensis
67983 Boone 04 Sep 1943 Ray C. Friesner
17933
BUT
Conyza canadensis (L.) Cronq. var. canadensis
56300 Starke 06 Sep 1941 Ray C. Friesner
16325
BUT
Conyza canadensis (L.) Cronq. var. canadensis
52217 Marshall 14 Sep 1940 Ray C. Friesner
14880
BUT
Conyza canadensis (L.) Cronq. var. canadensis
9549 Greene 17 Sep 1932 Ray C. Friesner
5261
BUT
Conyza canadensis (L.) Cronq. var. canadensis
68123 Hendricks 18 Sep 1943 Ray C. Friesner
17980
BUT
Conyza canadensis (L.) Cronq. var. canadensis
74321 Orange 22 Sep 1945 Ray C. Friesner
19832
BUT
Conyza canadensis (L.) Cronq. var. canadensis
10511 Hamilton 24 Sep 1932 Ray C. Friesner
5358
BUT
Conyza canadensis (L.) Cronq. var. canadensis
68027 Rush 25 Sep 1943 Ray C. Friesner
18025
BUT
Conyza canadensis (L.) Cronq. var. canadensis
68122 Fayette 25 Sep 1943 Ray C. Friesner
18093
BUT
Conyza canadensis (L.) Cronq. var. canadensis
71598 Delaware 30 Sep 1944 Ray C. Friesner
18776
BUT
Conyza canadensis (L.) Cronq. var. canadensis
73529 Carroll 06 Oct 1945 Ray C. Friesner
20100
BUT
Conyza canadensis (L.) Cronq. var. canadensis
36807 Ripley 09 Oct 1937 Ray C. Friesner
11786
BUT
Conyza canadensis (L.) Cronq. var. canadensis
50785 Brown 12 Oct 1940 Ray C. Friesner
15007
BUT
Conyza canadensis (L.) Cronq. var. canadensis
5961 Parke 12 Aug 1930 Rexford F. Daubenmire
BUT
Conyza canadensis (L.) Cronq. var. canadensis
100142 Pulaski 07 Aug 1948 Reynolds
76
BUT
Conyza canadensis (L.) Cronq. var. pusilla (Nutt.) Cronq.
16853 Jennings 29 Aug 1933 Scott McCoy
BUT
Conyza canadensis (L.) Cronq. var. canadensis
2969 Stanley A. Cain
BUT
Conyza canadensis (L.) Cronq. var. canadensis
32323 Carroll 16 Aug 1936 Wm. Daily
BUT
Conyza canadensis (L.) Cronq. var. canadensis
First Page Previous Page Next Page Last Page
Records per Page: