Common Liverwort
Marchantia polymorpha L.
- Kingdom
- Plantae
- Phylum
- Marchantiophyta
- Class
- Marchantiopsida
- Order
- Marchantiales
- Family
- Marchantiaceae
- Genus
- Marchantia
Range
Where it is recorded
Not enough evidence yet
Recorded in 38 of Ohio's 88 counties, with too few records in each for a result.
- No result yet (50)
- Recorded, too few records for a result (38)
- Recorded, season not shown (0)
- Season shown (0)
Counties as a table
| County | Records |
|---|---|
| Adams County | No qualifying records yet |
| Allen County | No qualifying records yet |
| Ashland County | Recorded, too few records for a result |
| Ashtabula County | Recorded, too few records for a result |
| 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 | No qualifying records yet |
| Carroll County | Recorded, too few records for a result |
| 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 | No qualifying records yet |
| Columbiana County | No qualifying records yet |
| Coshocton County | No qualifying records yet |
| Crawford County | No qualifying records yet |
| Cuyahoga County | Recorded, too few records for a result |
| Darke County | No qualifying records yet |
| Defiance County | No qualifying records yet |
| Delaware County | Recorded, too few records for a result |
| Erie County | Recorded, too few records for a result |
| Fairfield County | Recorded, too few records for a result |
| Fayette County | No qualifying records yet |
| Franklin County | Recorded, too few records for a result |
| Fulton County | No qualifying records yet |
| 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 | Recorded, too few records for a result |
| Hamilton County | Recorded, too few records for a result |
| Hancock County | No qualifying records yet |
| 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 | No qualifying records yet |
| 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 | Recorded, too few records for a result |
| Marion County | No qualifying records yet |
| Medina County | Recorded, too few records for a result |
| Meigs County | No qualifying records yet |
| Mercer County | No qualifying records yet |
| Miami County | No qualifying records yet |
| Monroe County | No qualifying records yet |
| Montgomery County | Recorded, too few records for a result |
| Morgan County | No qualifying records yet |
| 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 | Recorded, too few records for a result |
| Paulding County | No qualifying records yet |
| Perry County | No qualifying records yet |
| Pickaway County | No qualifying records yet |
| Pike County | No qualifying records yet |
| 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 | No qualifying records yet |
| Sandusky County | No qualifying records yet |
| Scioto County | No qualifying records yet |
| Seneca County | No qualifying records yet |
| Shelby County | Recorded, too few records for a result |
| 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 Ohio
Early September to mid-November, middle week mid-October
Recorded in two separate seasons, each shown with its own early, middle and late weeks. An earlier season is not shown: the weeks are still too uncertain.
Records per week from 196 records in 10 of the 10 years from 2016 to 2025. Shows when people recorded it, not a season or how common it is.
Show as a table
| Week | Records of Common Liverwort | 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 | 1 | 1 | 6,023 |
| Feb 8–14 | 1 | 1 | 5,888 |
| Feb 15–21 | 1 | 1 | 5,436 |
| Feb 22–28 | 1 | 1 | 6,846 |
| Mar 1–7 | 1 | 1 | 8,321 |
| Mar 8–14 | 0 | 0 | 10,384 |
| Mar 15–21 | 2 | 2 | 12,620 |
| Mar 22–28 | 1 | 1 | 13,949 |
| Mar 29 – Apr 4 | 2 | 2 | 19,661 |
| Apr 5–11 | 2 | 2 | 26,860 |
| Apr 12–18 | 2 | 2 | 39,925 |
| Apr 19–25 | 6 | 4 | 41,623 |
| Apr 26 – May 2 | 3 | 3 | 56,391 |
| May 3–9 | 7 | 4 | 52,952 |
| May 10–16 | 3 | 2 | 53,785 |
| May 17–23 | 3 | 3 | 57,698 |
| May 24–30 | 8 | 4 | 54,651 |
| May 31 – Jun 6 | 8 | 4 | 53,099 |
| Jun 7–13 | 4 | 3 | 53,700 |
| Jun 14–20 | 7 | 5 | 56,625 |
| Jun 21–27 | 8 | 6 | 55,361 |
| Jun 28 – Jul 4 | 8 | 5 | 58,477 |
| Jul 5–11 | 10 | 5 | 61,336 |
| Jul 12–18 | 9 | 6 | 64,722 |
| Jul 19–25 | 7 | 5 | 69,753 |
| Jul 26 – Aug 1 | 6 | 4 | 59,416 |
| Aug 2–8 | 8 | 5 | 59,712 |
| Aug 9–15 | 10 | 6 | 55,994 |
| Aug 16–22 | 6 | 4 | 54,328 |
| Aug 23–29 | 3 | 2 | 51,772 |
| Aug 30 – Sep 5 | 3 | 3 | 57,167 |
| Sep 6–12 | 4 | 3 | 59,075 |
| Sep 13–19 | 3 | 3 | 54,543 |
| Sep 20–26 | 3 | 2 | 45,860 |
| Sep 27 – Oct 3 | 5 | 3 | 43,180 |
| Oct 4–10 | 8 | 5 | 37,841 |
| Oct 11–17 | 6 | 4 | 30,824 |
| Oct 18–24 | 8 | 4 | 21,156 |
| Oct 25–31 | 7 | 6 | 19,021 |
| Nov 1–7 | 2 | 2 | 14,172 |
| Nov 8–14 | 4 | 4 | 12,621 |
| Nov 15–21 | 1 | 1 | 7,965 |
| Nov 22–28 | 2 | 2 | 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 | 1 | 1 | 5,661 |
| Dec 27 – Jan 2 | 1 | 1 | 8,459 |
Reported in flower
No records here show flowers yet, so there is no flowering season to show. 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.
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
- Snakewort Conocephalum salebrosumOften confused in Ohio: 10 identifications in Ohio named one where the other was meant
- Hemisphaeric Liverwort Reboulia hemisphaerica49 identifications worldwide named one where the other was meant
- fringed heartwort Ricciocarpos natans13 identifications worldwide named one where the other was meant
- common pellia Pellia epiphylla13 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.
Land cover where it is recorded
| Land cover | Its recordsAll Ohio records |
|---|---|
| Developed | 69%49% |
| Forest | 17%31% |
| Wetland | 6%5% |
| Farmland | 5%11% |
| Open water | 2%3% |
From 98 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)
Finer identifications
Some Ohio records of this species were identified to a subspecies:
- Marchantia polymorpha subsp. polymorphaStar-headed Liverwortsubspecies
- Marchantia polymorpha subsp. ruderalisCommon Liverwortsubspecies
Every one of these records counts toward Common Liverwort's season above.
Why some records go further than species
Many plants vary from place to place. Botanists name these groups at three levels below species: subspecies, variety and form, from the broadest difference to the smallest. Observers and experts only identify a record that far when it shows enough detail to tell them apart. Records without that detail count at the species level.
Names: Catalogue of Life.
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 Ohio result
196 records from 2 datasets.
- iNaturalist Research-grade Observations (opens in a new tab) · iNaturalist.org · 195 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.