Large-leaf water leaf
Hydrophyllum macrophyllum Nutt.
Large-leaf water leaf in all of Ohio
- Kingdom
- Plantae
- Phylum
- Tracheophyta
- Class
- Magnoliopsida
- Order
- Boraginales
- Family
- Hydrophyllaceae
- Genus
- Hydrophyllum
Range
Where it is recorded
Season shown in 5 of Ohio's 88 counties. Explore Ohio
- No result yet (49)
- Recorded, too few records for a result (31)
- Recorded, season not shown (3)
- Season shown (5)
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 | No qualifying records yet |
| Ashtabula County | No qualifying records yet |
| Athens County | 46 · Season shown |
| Auglaize County | Recorded, too few records for a result |
| 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 | Recorded, too few records for a result |
| Clark County | Recorded, too few records for a result |
| Clermont County | 52 · Recorded, season not shown |
| 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 | No qualifying records yet |
| Darke County | No qualifying records yet |
| Defiance County | No qualifying records yet |
| Delaware County | 31 · Season shown |
| Erie County | No qualifying records yet |
| Fairfield County | Recorded, too few records for a result |
| Fayette County | No qualifying records yet |
| Franklin County | 58 · Season shown |
| Fulton County | No qualifying records yet |
| Gallia County | No qualifying records yet |
| Geauga County | No qualifying records yet |
| Greene County | 22 · Season shown |
| Guernsey County | No qualifying records yet |
| Hamilton County | 147 · Recorded, season not shown |
| Hancock County | Recorded, too few records for a result |
| Hardin County | Recorded, too few records for a result |
| Harrison County | No qualifying records yet |
| Henry County | No qualifying records yet |
| Highland County | Recorded, too few records for a result |
| Hocking County | Recorded, too few records for a result |
| Holmes County | No qualifying records yet |
| 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 | No qualifying records yet |
| Lawrence County | Recorded, too few records for a result |
| Licking County | Recorded, too few records for a result |
| Logan County | Recorded, too few records for a result |
| Lorain County | No qualifying records yet |
| Lucas County | No qualifying records yet |
| Madison County | No qualifying records yet |
| Mahoning County | No qualifying records yet |
| Marion County | No qualifying records yet |
| Medina County | No qualifying records yet |
| Meigs County | Recorded, too few records for a result |
| Mercer County | Recorded, too few records for a result |
| Miami County | Recorded, too few records for a result |
| Monroe County | No qualifying records yet |
| Montgomery County | 22 · Recorded, season not 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 | No qualifying records yet |
| Ottawa County | No qualifying records yet |
| 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 | No qualifying records yet |
| Portage County | No qualifying records yet |
| Preble County | Recorded, too few records for a result |
| Putnam County | No qualifying records yet |
| Richland County | No qualifying records yet |
| 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 | No qualifying records yet |
| Shelby County | Recorded, too few records for a result |
| Stark County | No qualifying records yet |
| Summit County | No qualifying records yet |
| Trumbull County | No qualifying records yet |
| Tuscarawas County | No qualifying records yet |
| Union County | Recorded, too few records for a result |
| Van Wert County | No qualifying records yet |
| Vinton County | Recorded, too few records for a result |
| Warren County | 31 · Season shown |
| Washington County | Recorded, too few records for a result |
| Wayne County | No qualifying records yet |
| Williams County | No qualifying records yet |
| Wood County | No qualifying records yet |
| 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 Athens County
Mid-March to late May, middle week Apr 26 – May 2
Records per week from 46 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 43 dates. Latest record: May 2025.
Show as a table
| Week | Records of Large-leaf water leaf | Years recorded | Records of all species |
|---|---|---|---|
| Jan 4–10 | 0 | 0 | 74 |
| Jan 11–17 | 0 | 0 | 132 |
| Jan 18–24 | 0 | 0 | 107 |
| Jan 25–31 | 0 | 0 | 219 |
| Feb 1–7 | 0 | 0 | 392 |
| Feb 8–14 | 0 | 0 | 232 |
| Feb 15–21 | 0 | 0 | 235 |
| Feb 22–28 | 0 | 0 | 361 |
| Mar 1–7 | 0 | 0 | 532 |
| Mar 8–14 | 0 | 0 | 466 |
| Mar 15–21 | 3 | 3 | 593 |
| Mar 22–28 | 5 | 3 | 950 |
| Mar 29 – Apr 4 | 5 | 2 | 1,265 |
| Apr 5–11 | 5 | 2 | 1,616 |
| Apr 12–18 | 3 | 1 | 1,804 |
| Apr 19–25 | 2 | 1 | 1,926 |
| Apr 26 – May 2 | 6 | 5 | 2,291 |
| May 3–9 | 3 | 3 | 1,407 |
| May 10–16 | 3 | 3 | 1,408 |
| May 17–23 | 4 | 3 | 2,542 |
| May 24–30 | 4 | 3 | 1,821 |
| May 31 – Jun 6 | 2 | 2 | 798 |
| Jun 7–13 | 1 | 1 | 775 |
| Jun 14–20 | 0 | 0 | 830 |
| Jun 21–27 | 0 | 0 | 700 |
| Jun 28 – Jul 4 | 0 | 0 | 549 |
| Jul 5–11 | 0 | 0 | 664 |
| Jul 12–18 | 0 | 0 | 869 |
| Jul 19–25 | 0 | 0 | 700 |
| Jul 26 – Aug 1 | 0 | 0 | 673 |
| Aug 2–8 | 0 | 0 | 613 |
| Aug 9–15 | 0 | 0 | 871 |
| Aug 16–22 | 0 | 0 | 807 |
| Aug 23–29 | 0 | 0 | 1,289 |
| Aug 30 – Sep 5 | 0 | 0 | 2,925 |
| Sep 6–12 | 0 | 0 | 2,530 |
| Sep 13–19 | 0 | 0 | 2,417 |
| Sep 20–26 | 0 | 0 | 1,530 |
| Sep 27 – Oct 3 | 0 | 0 | 1,628 |
| Oct 4–10 | 0 | 0 | 1,836 |
| Oct 11–17 | 0 | 0 | 1,920 |
| Oct 18–24 | 0 | 0 | 825 |
| Oct 25–31 | 0 | 0 | 930 |
| Nov 1–7 | 0 | 0 | 881 |
| Nov 8–14 | 0 | 0 | 846 |
| Nov 15–21 | 0 | 0 | 573 |
| Nov 22–28 | 0 | 0 | 536 |
| Nov 29 – Dec 5 | 0 | 0 | 270 |
| Dec 6–12 | 0 | 0 | 982 |
| Dec 13–19 | 0 | 0 | 158 |
| Dec 20–26 | 0 | 0 | 106 |
| Dec 27 – Jan 2 | 0 | 0 | 95 |
Reported in flower
Only 1 records here show flowers, too few to show a flowering season. One needs at least 20 records from 5 different years.
Reported in fruit
No records here show fruit yet, so there is no fruiting season to show. One needs at least 20 records from 5 different years.
In Ohio
Late March to late May, middle week Apr 26 – May 2
Records per week from 673 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 336 dates. Latest record: July 2025.
Show as a table
| Week | Records of Large-leaf water leaf | 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 | 0 | 0 | 5,888 |
| Feb 15–21 | 0 | 0 | 5,436 |
| Feb 22–28 | 0 | 0 | 6,846 |
| Mar 1–7 | 1 | 1 | 8,321 |
| Mar 8–14 | 1 | 1 | 10,384 |
| Mar 15–21 | 13 | 8 | 12,620 |
| Mar 22–28 | 21 | 6 | 13,949 |
| Mar 29 – Apr 4 | 44 | 7 | 19,661 |
| Apr 5–11 | 70 | 7 | 26,860 |
| Apr 12–18 | 67 | 8 | 39,925 |
| Apr 19–25 | 76 | 8 | 41,623 |
| Apr 26 – May 2 | 57 | 9 | 56,391 |
| May 3–9 | 37 | 8 | 52,952 |
| May 10–16 | 32 | 7 | 53,785 |
| May 17–23 | 60 | 8 | 57,698 |
| May 24–30 | 86 | 9 | 54,651 |
| May 31 – Jun 6 | 80 | 9 | 53,099 |
| Jun 7–13 | 13 | 4 | 53,700 |
| Jun 14–20 | 6 | 4 | 56,625 |
| Jun 21–27 | 5 | 3 | 55,361 |
| Jun 28 – Jul 4 | 1 | 1 | 58,477 |
| Jul 5–11 | 2 | 2 | 61,336 |
| Jul 12–18 | 1 | 1 | 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 | 0 | 0 | 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 mid-May to late May, middle week May 24–30.
From 26 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.
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.
Relatives
In the same genus
Other Hydrophyllum recorded in Athens County
Identification
How to identify it
Often confused with
- Virginia waterleaf Hydrophyllum virginianumOften confused in Ohio: 76 identifications in Ohio named one where the other was meant
- great waterleaf Hydrophyllum appendiculatumOften confused in Ohio: 54 identifications in Ohio named one where the other was meant
- Broad-leaf Waterleaf Hydrophyllum canadenseOften confused in Ohio: 19 identifications in Ohio named one where the other was meant
- leafcup Polymnia canadensis30 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: no record
- Mar: recorded
- Apr: recorded
- May: recorded
- Jun: recorded
- Jul: recorded
- Aug: no record
- Sep: no record
- Oct: no record
- Nov: no record
- Dec: no record
Not reported in Ohio in August to February, 2016 to 2025.
Land cover where it is recorded
| Land cover | Its recordsAll Ohio records |
|---|---|
| Forest | 83%31% |
| Developed | 16%49% |
| Farmland | 0.5%11% |
| Wetland | 0.2%5% |
From 432 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 Athens County result
46 records from 1 dataset.
- iNaturalist Research-grade Observations (opens in a new tab) · iNaturalist.org · 46 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.
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.