Season shown in 30 of Ohio's 88 counties. Explore Ohio
No result yet (4)
Recorded, too few records for a result (52)
Recorded, season not shown (2)
Season shown (30)
Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files, 1:500,000. Show as a table
Counties as a table
cut-leaved toothwort by Ohio county: records and mapped range
County
Records
Adams County
27 · Season shown
Allen County
27 · Season shown
Ashland County
Recorded, too few records for a result
Ashtabula County
27 · Season shown
Athens County
148 · Season shown
Auglaize County
Recorded, too few records for a result
Belmont County
Recorded, too few records for a result
Brown County
Recorded, too few records for a result
Butler County
121 · Season shown
Carroll County
Recorded, too few records for a result
Champaign County
Recorded, too few records for a result
Clark County
22 · Season shown
Clermont County
83 · Season shown
Clinton County
Recorded, too few records for a result
Columbiana County
Recorded, too few records for a result
Coshocton County
Recorded, too few records for a result
Crawford County
Recorded, too few records for a result
Cuyahoga County
192 · Season shown
Darke County
Recorded, too few records for a result
Defiance County
Recorded, too few records for a result
Delaware County
76 · Season shown
Erie County
55 · Season shown
Fairfield County
30 · Season shown
Fayette County
No qualifying records yet
Franklin County
192 · Season shown
Fulton County
Recorded, too few records for a result
Gallia County
Recorded, too few records for a result
Geauga County
39 · Season shown
Greene County
100 · Season shown
Guernsey County
Recorded, too few records for a result
Hamilton County
358 · Season shown
Hancock County
Recorded, too few records for a result
Hardin County
Recorded, too few records for a result
Harrison County
Recorded, too few records for a result
Henry County
Recorded, too few records for a result
Highland County
30 · Season shown
Hocking County
34 · Recorded, season not shown
Holmes County
Recorded, too few records for a result
Huron County
Recorded, too few records for a result
Jackson County
Recorded, too few records for a result
Jefferson County
Recorded, too few records for a result
Knox County
Recorded, too few records for a result
Lake County
68 · Season shown
Lawrence County
Recorded, too few records for a result
Licking County
38 · Season shown
Logan County
Recorded, too few records for a result
Lorain County
50 · Season shown
Lucas County
30 · Season shown
Madison County
Recorded, too few records for a result
Mahoning County
Recorded, too few records for a result
Marion County
Recorded, too few records for a result
Medina County
87 · Season shown
Meigs County
Recorded, too few records for a result
Mercer County
Recorded, too few records for a result
Miami County
21 · Season shown
Monroe County
Recorded, too few records for a result
Montgomery County
77 · Season shown
Morgan County
Recorded, too few records for a result
Morrow County
Recorded, too few records for a result
Muskingum County
Recorded, too few records for a result
Noble County
Recorded, too few records for a result
Ottawa County
Recorded, too few records for a result
Paulding County
No qualifying records yet
Perry County
Recorded, too few records for a result
Pickaway County
Recorded, too few records for a result
Pike County
Recorded, too few records for a result
Portage County
38 · Season shown
Preble County
23 · Season shown
Putnam County
No qualifying records yet
Richland County
32 · Recorded, season not shown
Ross County
Recorded, too few records for a result
Sandusky County
Recorded, too few records for a result
Scioto County
Recorded, too few records for a result
Seneca County
Recorded, too few records for a result
Shelby County
Recorded, too few records for a result
Stark County
37 · Season shown
Summit County
246 · Season shown
Trumbull County
Recorded, too few records for a result
Tuscarawas County
Recorded, too few records for a result
Union County
Recorded, too few records for a result
Van Wert County
Recorded, too few records for a result
Vinton County
Recorded, too few records for a result
Warren County
36 · Season shown
Washington County
Recorded, too few records for a result
Wayne County
66 · Season shown
Williams County
No qualifying records yet
Wood County
59 · Season shown
Wyandot County
Recorded, too few records for a result
No mapped range from the range source used, the USGS Gap Analysis Project, which maps land vertebrates only.
Season
When it is recorded
In Hamilton County
Mid-March to late April, middle week Apr 5–11
Middle week · Apr 5–11
This week · Nov 8–14
JanFebMarAprMayJunJulAugSepOctNovDec
Show over the bars
Recording in Hamilton County · records of all species each week, 87,019 in all
Records per week from 358 records in 8 of the 10 years from 2016 to 2025. Shows when people recorded it, not how common it is. The grey bars show how many records of all species were made here each week, so you can see when recording itself was high or low; the season is not adjusted by them.
Recorded on 164 dates. Latest record: May 2025.
Show as a table
Records of cut-leaved toothwort in Hamilton County each week, and records of all species
Week
Records of cut-leaved toothwort
Years recorded
Records of all species
Jan 4–10
0
0
392
Jan 11–17
0
0
344
Jan 18–24
0
0
312
Jan 25–31
0
0
206
Feb 1–7
0
0
357
Feb 8–14
0
0
383
Feb 15–21
0
0
366
Feb 22–28
1
1
391
Mar 1–7
1
1
551
Mar 8–14
4
3
523
Mar 15–21
24
6
750
Mar 22–28
43
6
1,012
Mar 29 – Apr 4
85
7
1,535
Apr 5–11
70
7
1,960
Apr 12–18
72
7
2,492
Apr 19–25
22
6
2,403
Apr 26 – May 2
26
6
3,783
May 3–9
9
4
3,307
May 10–16
0
0
2,059
May 17–23
0
0
2,153
May 24–30
1
1
2,390
May 31 – Jun 6
0
0
2,648
Jun 7–13
0
0
2,715
Jun 14–20
0
0
2,695
Jun 21–27
0
0
2,714
Jun 28 – Jul 4
0
0
3,220
Jul 5–11
0
0
2,980
Jul 12–18
0
0
3,031
Jul 19–25
0
0
2,961
Jul 26 – Aug 1
0
0
2,795
Aug 2–8
0
0
2,884
Aug 9–15
0
0
2,696
Aug 16–22
0
0
2,535
Aug 23–29
0
0
2,536
Aug 30 – Sep 5
0
0
2,606
Sep 6–12
0
0
2,980
Sep 13–19
0
0
2,959
Sep 20–26
0
0
2,313
Sep 27 – Oct 3
0
0
2,122
Oct 4–10
0
0
1,828
Oct 11–17
0
0
1,793
Oct 18–24
0
0
1,338
Oct 25–31
0
0
1,023
Nov 1–7
0
0
676
Nov 8–14
0
0
593
Nov 15–21
0
0
384
Nov 22–28
0
0
496
Nov 29 – Dec 5
0
0
356
Dec 6–12
0
0
478
Dec 13–19
0
0
285
Dec 20–26
0
0
322
Dec 27 – Jan 2
0
0
388
Reported in flower
Usually reported in flower mid-March to mid-April, middle week Mar 29 – Apr 4.
From 38 records that show flowers. Not every photo of a plant in flower is marked as flowering, so this shows when people reported it in flower, not when it flowers.
Reported in fruit
Only 2 records here show fruit, too few to show a fruiting season. One needs at least 20 records from 5 different years.
In Ohio
Late March to early May, middle week Apr 12–18
Middle week · Apr 12–18
This week · Nov 8–14
JanFebMarAprMayJunJulAugSepOctNovDec
Show over the bars
Recording in Ohio · records of all species each week, 1,691,199 in all
Records per week from 3,734 records in 10 of the 10 years from 2016 to 2025. Shows when people recorded it, not how common it is. The grey bars show how many records of all species were made here each week, so you can see when recording itself was high or low; the season is not adjusted by them.
Recorded on 532 dates. Latest record: June 2025.
Show as a table
Records of cut-leaved toothwort in Ohio each week, and records of all species
Week
Records of cut-leaved toothwort
Years recorded
Records of all species
Jan 4–10
0
0
6,211
Jan 11–17
0
0
5,146
Jan 18–24
0
0
4,645
Jan 25–31
0
0
4,698
Feb 1–7
0
0
6,023
Feb 8–14
1
1
5,888
Feb 15–21
0
0
5,436
Feb 22–28
4
1
6,846
Mar 1–7
10
2
8,321
Mar 8–14
24
4
10,384
Mar 15–21
88
8
12,620
Mar 22–28
191
9
13,949
Mar 29 – Apr 4
407
10
19,661
Apr 5–11
644
10
26,860
Apr 12–18
901
10
39,925
Apr 19–25
656
10
41,623
Apr 26 – May 2
514
10
56,391
May 3–9
173
10
52,952
May 10–16
58
9
53,785
May 17–23
25
6
57,698
May 24–30
24
6
54,651
May 31 – Jun 6
8
7
53,099
Jun 7–13
3
3
53,700
Jun 14–20
2
2
56,625
Jun 21–27
0
0
55,361
Jun 28 – Jul 4
0
0
58,477
Jul 5–11
0
0
61,336
Jul 12–18
0
0
64,722
Jul 19–25
0
0
69,753
Jul 26 – Aug 1
0
0
59,416
Aug 2–8
0
0
59,712
Aug 9–15
0
0
55,994
Aug 16–22
0
0
54,328
Aug 23–29
0
0
51,772
Aug 30 – Sep 5
0
0
57,167
Sep 6–12
0
0
59,075
Sep 13–19
0
0
54,543
Sep 20–26
0
0
45,860
Sep 27 – Oct 3
0
0
43,180
Oct 4–10
0
0
37,841
Oct 11–17
0
0
30,824
Oct 18–24
0
0
21,156
Oct 25–31
0
0
19,021
Nov 1–7
0
0
14,172
Nov 8–14
1
1
12,621
Nov 15–21
0
0
7,965
Nov 22–28
0
0
8,136
Nov 29 – Dec 5
0
0
6,083
Dec 6–12
0
0
6,004
Dec 13–19
0
0
5,423
Dec 20–26
0
0
5,661
Dec 27 – Jan 2
0
0
8,459
Reported in flower
Usually reported in flower late March to late April, middle week Apr 12–18.
From 314 records that show flowers. Not every photo of a plant in flower is marked as flowering, so this shows when people reported it in flower, not when it flowers.
Reported in fruit
Only 15 records here show fruit, too few to show a fruiting season. One needs at least 20 records from 5 different years.
What these results show
These results show when people recorded a species, not when or where it occurs. Missing weeks and low counts do not mean absence or scarcity, and counts are not abundance. Contributed records reflect where, when and what people chose to observe.
Slender toothwortCardamine angustataOften confused in Ohio: 30 identifications in Ohio named one where the other was meant
Purple CressCardamine douglassiiOften confused in Ohio: 12 identifications in Ohio named one where the other was meant
Virginia SpringbeautyClaytonia virginicaOften confused in Ohio: 10 identifications in Ohio named one where the other was meant
bulbous cressCardamine bulbosa33 identifications worldwide named one where the other was meant
Virginia waterleafHydrophyllum virginianum10 identifications worldwide named one where the other was meant
From iNaturalist’s similar-species counts, refreshed monthly: confusions in Ohio first, then worldwide. Only species with an Ohio result are listed.
Months not reported
Jan: no record
Feb: recorded
Mar: recorded
Apr: recorded
May: recorded
Jun: recorded
Jul: no record
Aug: no record
Sep: no record
Oct: no record
Nov: recorded
Dec: no record
Not reported in Ohio in July to October and December to January, 2016 to 2025.
Land cover where it is recorded
Land cover
Its recordsAll Ohio records
Forest
77%31%
Developed
18%49%
Wetland
4%5%
Farmland
1%11%
Open water
0.3%3%
From 2,141 records placed within 100 m, beside all Ohio records placed the same way. People record where they go, so this shows where records come from, not where the species lives. Land cover: USGS Annual NLCD, 2025 (opens in a new tab)
Sources
Where these results come from
Records from iNaturalist research-grade observations and expert-identified GBIF datasets, CC0, CC BY and CC BY-NC. Sources
Seasons use the published method and its evidence thresholds. Methods
A spreadsheet (CSV) with a link to each record, on iNaturalist or GBIF. Records whose location was hidden by the observer or the source are counted but not linked.
