American senna
Senna hebecarpa (Fernald) H.S.Irwin & Barneby
American senna in all of Ohio- Kingdom
- Plantae
- Phylum
- Tracheophyta
- Class
- Magnoliopsida
- Order
- Fabales
- Family
- Fabaceae
- Genus
- Senna
Range
Where it is recorded
Season shown in 1 of Ohio's 88 counties. Explore Ohio
- No result yet (41)
- Recorded, too few records for a result (43)
- Recorded, season not shown (3)
- Season shown (1)
Counties as a table
| County | Records |
|---|---|
| Adams County | Recorded, too few records for a result |
| Allen County | Recorded, too few records for a result |
| Ashland County | Recorded, too few records for a result |
| Ashtabula County | No qualifying records yet |
| Athens County | Recorded, too few records for a result |
| Auglaize County | No qualifying records yet |
| Belmont County | No qualifying records yet |
| Brown County | No qualifying records yet |
| Butler County | Recorded, too few records for a result |
| Carroll County | No qualifying records yet |
| Champaign County | No qualifying records yet |
| Clark County | Recorded, too few records for a result |
| Clermont County | Recorded, too few records for a result |
| Clinton County | Recorded, too few records for a result |
| Columbiana County | No qualifying records yet |
| Coshocton County | No qualifying records yet |
| Crawford County | No qualifying records yet |
| Cuyahoga County | 58 · Recorded, season not shown |
| Darke County | Recorded, too few records for a result |
| Defiance County | Recorded, too few records for a result |
| Delaware County | Recorded, too few records for a result |
| Erie County | No qualifying records yet |
| Fairfield County | Recorded, too few records for a result |
| Fayette County | No qualifying records yet |
| Franklin County | 93 · Season shown |
| Fulton County | Recorded, too few records for a result |
| Gallia County | No qualifying records yet |
| Geauga County | Recorded, too few records for a result |
| Greene County | Recorded, too few records for a result |
| Guernsey County | No qualifying records yet |
| Hamilton County | 27 · Recorded, season not shown |
| Hancock County | Recorded, too few records for a result |
| Hardin County | No qualifying records yet |
| Harrison County | No qualifying records yet |
| Henry County | No qualifying records yet |
| Highland County | No qualifying records yet |
| Hocking County | Recorded, too few records for a result |
| Holmes County | Recorded, too few records for a result |
| Huron County | No qualifying records yet |
| Jackson County | No qualifying records yet |
| Jefferson County | No qualifying records yet |
| Knox County | Recorded, too few records for a result |
| Lake County | Recorded, too few records for a result |
| Lawrence County | No qualifying records yet |
| Licking County | Recorded, too few records for a result |
| Logan County | Recorded, too few records for a result |
| Lorain County | Recorded, too few records for a result |
| Lucas County | Recorded, too few records for a result |
| Madison County | No qualifying records yet |
| Mahoning County | No qualifying records yet |
| Marion County | Recorded, too few records for a result |
| Medina County | Recorded, too few records for a result |
| Meigs County | No qualifying records yet |
| Mercer County | No qualifying records yet |
| Miami County | Recorded, too few records for a result |
| Monroe County | No qualifying records yet |
| Montgomery County | 21 · Recorded, season not shown |
| Morgan County | No qualifying records yet |
| Morrow County | No qualifying records yet |
| Muskingum County | Recorded, too few records for a result |
| Noble County | No qualifying records yet |
| Ottawa County | Recorded, too few records for a result |
| Paulding County | No qualifying records yet |
| Perry County | No qualifying records yet |
| Pickaway County | Recorded, too few records for a result |
| Pike County | Recorded, too few records for a result |
| Portage County | Recorded, too few records for a result |
| Preble County | No qualifying records yet |
| Putnam County | No qualifying records yet |
| Richland County | Recorded, too few records for a result |
| Ross County | Recorded, too few records for a result |
| Sandusky County | No qualifying records yet |
| Scioto County | Recorded, too few records for a result |
| Seneca County | Recorded, too few records for a result |
| Shelby County | No qualifying records yet |
| Stark County | Recorded, too few records for a result |
| Summit County | Recorded, too few records for a result |
| Trumbull County | Recorded, too few records for a result |
| Tuscarawas County | No qualifying records yet |
| Union County | No qualifying records yet |
| Van Wert County | No qualifying records yet |
| Vinton County | No qualifying records yet |
| Warren County | Recorded, too few records for a result |
| Washington County | No qualifying records yet |
| Wayne County | Recorded, too few records for a result |
| Williams County | Recorded, too few records for a result |
| Wood County | Recorded, too few records for a result |
| Wyandot County | No qualifying records yet |
No mapped range from the range source used, the USGS Gap Analysis Project, which maps land vertebrates only.
Season
When it is recorded
In Franklin County
Late June to late September, middle week Aug 9–15
Records per week from 93 records in 7 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 75 dates. Latest record: November 2025.
Show as a table
| Week | Records of American senna | Years recorded | Records of all species |
|---|---|---|---|
| Jan 4–10 | 0 | 0 | 417 |
| Jan 11–17 | 0 | 0 | 236 |
| Jan 18–24 | 0 | 0 | 236 |
| Jan 25–31 | 0 | 0 | 236 |
| Feb 1–7 | 0 | 0 | 244 |
| Feb 8–14 | 0 | 0 | 360 |
| Feb 15–21 | 0 | 0 | 270 |
| Feb 22–28 | 0 | 0 | 401 |
| Mar 1–7 | 0 | 0 | 483 |
| Mar 8–14 | 0 | 0 | 567 |
| Mar 15–21 | 0 | 0 | 561 |
| Mar 22–28 | 0 | 0 | 750 |
| Mar 29 – Apr 4 | 0 | 0 | 1,310 |
| Apr 5–11 | 0 | 0 | 1,456 |
| Apr 12–18 | 0 | 0 | 2,408 |
| Apr 19–25 | 0 | 0 | 2,525 |
| Apr 26 – May 2 | 0 | 0 | 2,812 |
| May 3–9 | 0 | 0 | 2,785 |
| May 10–16 | 0 | 0 | 2,381 |
| May 17–23 | 0 | 0 | 2,651 |
| May 24–30 | 0 | 0 | 2,735 |
| May 31 – Jun 6 | 1 | 1 | 2,861 |
| Jun 7–13 | 2 | 1 | 2,986 |
| Jun 14–20 | 0 | 0 | 2,980 |
| Jun 21–27 | 1 | 1 | 3,051 |
| Jun 28 – Jul 4 | 3 | 1 | 3,121 |
| Jul 5–11 | 0 | 0 | 3,399 |
| Jul 12–18 | 1 | 1 | 3,754 |
| Jul 19–25 | 4 | 2 | 3,305 |
| Jul 26 – Aug 1 | 3 | 2 | 3,347 |
| Aug 2–8 | 9 | 6 | 3,803 |
| Aug 9–15 | 24 | 7 | 3,507 |
| Aug 16–22 | 11 | 5 | 3,137 |
| Aug 23–29 | 12 | 6 | 3,249 |
| Aug 30 – Sep 5 | 6 | 5 | 3,487 |
| Sep 6–12 | 1 | 1 | 3,215 |
| Sep 13–19 | 5 | 3 | 3,368 |
| Sep 20–26 | 3 | 3 | 2,586 |
| Sep 27 – Oct 3 | 2 | 2 | 3,624 |
| Oct 4–10 | 3 | 2 | 2,701 |
| Oct 11–17 | 1 | 1 | 2,107 |
| Oct 18–24 | 0 | 0 | 1,201 |
| Oct 25–31 | 0 | 0 | 1,123 |
| Nov 1–7 | 0 | 0 | 789 |
| Nov 8–14 | 0 | 0 | 798 |
| Nov 15–21 | 1 | 1 | 468 |
| Nov 22–28 | 0 | 0 | 522 |
| Nov 29 – Dec 5 | 0 | 0 | 225 |
| Dec 6–12 | 0 | 0 | 234 |
| Dec 13–19 | 0 | 0 | 392 |
| Dec 20–26 | 0 | 0 | 254 |
| Dec 27 – Jan 2 | 0 | 0 | 422 |
Reported in flower
Only 2 records here show flowers, too few to show a flowering season. One needs at least 20 records from 5 different years.
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
Mid-July to mid-October, middle week Aug 9–15
Records per week from 550 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 321 dates. Latest record: November 2025.
Show as a table
| Week | Records of American senna | Years recorded | Records of all species |
|---|---|---|---|
| Jan 4–10 | 0 | 0 | 6,211 |
| Jan 11–17 | 1 | 1 | 5,146 |
| Jan 18–24 | 0 | 0 | 4,645 |
| Jan 25–31 | 0 | 0 | 4,698 |
| Feb 1–7 | 1 | 1 | 6,023 |
| Feb 8–14 | 0 | 0 | 5,888 |
| Feb 15–21 | 0 | 0 | 5,436 |
| Feb 22–28 | 0 | 0 | 6,846 |
| Mar 1–7 | 0 | 0 | 8,321 |
| Mar 8–14 | 0 | 0 | 10,384 |
| Mar 15–21 | 0 | 0 | 12,620 |
| Mar 22–28 | 0 | 0 | 13,949 |
| Mar 29 – Apr 4 | 1 | 1 | 19,661 |
| Apr 5–11 | 1 | 1 | 26,860 |
| Apr 12–18 | 1 | 1 | 39,925 |
| Apr 19–25 | 0 | 0 | 41,623 |
| Apr 26 – May 2 | 0 | 0 | 56,391 |
| May 3–9 | 0 | 0 | 52,952 |
| May 10–16 | 0 | 0 | 53,785 |
| May 17–23 | 0 | 0 | 57,698 |
| May 24–30 | 0 | 0 | 54,651 |
| May 31 – Jun 6 | 3 | 3 | 53,099 |
| Jun 7–13 | 2 | 1 | 53,700 |
| Jun 14–20 | 0 | 0 | 56,625 |
| Jun 21–27 | 5 | 4 | 55,361 |
| Jun 28 – Jul 4 | 4 | 1 | 58,477 |
| Jul 5–11 | 3 | 3 | 61,336 |
| Jul 12–18 | 17 | 6 | 64,722 |
| Jul 19–25 | 27 | 8 | 69,753 |
| Jul 26 – Aug 1 | 58 | 8 | 59,416 |
| Aug 2–8 | 79 | 9 | 59,712 |
| Aug 9–15 | 98 | 9 | 55,994 |
| Aug 16–22 | 63 | 8 | 54,328 |
| Aug 23–29 | 51 | 6 | 51,772 |
| Aug 30 – Sep 5 | 27 | 6 | 57,167 |
| Sep 6–12 | 24 | 6 | 59,075 |
| Sep 13–19 | 19 | 6 | 54,543 |
| Sep 20–26 | 14 | 4 | 45,860 |
| Sep 27 – Oct 3 | 10 | 5 | 43,180 |
| Oct 4–10 | 9 | 5 | 37,841 |
| Oct 11–17 | 11 | 3 | 30,824 |
| Oct 18–24 | 7 | 4 | 21,156 |
| Oct 25–31 | 2 | 1 | 19,021 |
| Nov 1–7 | 1 | 1 | 14,172 |
| Nov 8–14 | 3 | 3 | 12,621 |
| Nov 15–21 | 1 | 1 | 7,965 |
| Nov 22–28 | 5 | 2 | 8,136 |
| Nov 29 – Dec 5 | 1 | 1 | 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 | 1 | 1 | 8,459 |
Reported in flower
Usually reported in flower mid-July to late August, middle week Aug 2–8.
From 50 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 19 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.
Identification
How to identify it
Often confused with
- Maryland senna Senna marilandicaOften confused in Ohio: 39 identifications in Ohio named one where the other was meant
- partridge pea Chamaecrista fasciculata13 identifications worldwide named one where the other was meant
- honey locust Gleditsia triacanthos11 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: recorded
- Feb: no record
- Mar: recorded
- Apr: recorded
- May: no record
- Jun: recorded
- Jul: recorded
- Aug: recorded
- Sep: recorded
- Oct: recorded
- Nov: recorded
- Dec: recorded
Not reported in Ohio in February and May, 2016 to 2025.
Land cover where it is recorded
| Land cover | Its recordsAll Ohio records |
|---|---|
| Developed | 55%49% |
| Farmland | 25%11% |
| Forest | 17%31% |
| Wetland | 2%5% |
| Grassland and shrub | 1%0.9% |
| Barren | 0.3%0.6% |
| Open water | 0.3%3% |
From 369 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
- See it on iNaturalist (opens in a new tab)OpenPhenology is independent and not affiliated with iNaturalist.
Records behind the Franklin County result
93 records from 2 datasets.
- iNaturalist Research-grade Observations (opens in a new tab) · iNaturalist.org · 92 recordsiNaturalist contributors, iNaturalist (2026). iNaturalist Research-grade Observations. iNaturalist.org. Occurrence dataset https://doi.org/10.15468/ab3s5x accessed via GBIF.org on 2026-11-13.
- iNaturalist observations (opens in a new tab) · iNaturalist.org · 1 recordiNaturalist. Available from https://www.inaturalist.org. Accessed 2026-11-13
To cite: the GBIF download doi:10.15468/dl.y2jkt8 (opens in a new tab).
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.