Isoetes riparia

Engelm. · species

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Plantae/Tracheophyta/Lycopodiopsida/Isoetales/Isoetaceae/Isoetes

At a glance

Occurrence records121

Data sources7

Biological traits8

DNA specimens6

eDNA detections4

Sources7 archives

Databases and archives Isoetes riparia's data was compiled from.

WikipediaWikimedia Foundation2 languages↗

BioWikiNetmultilingual Wikipediamultilingual↗

GBIFGlobal Biodiversity Information Facility121 records↗

ENAEuropean Nucleotide Archive · EMBL-EBI4 eDNA detections↗

BOLD SystemsCentre for Biodiversity Genomics6 specimens↗

CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗

GLoBIGlobal Biotic Interactionsbiotic interactions↗

On this page6 sections

Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.

NarrativeWikipediaarticle

Traits & measurements3 literature sources8 traits

Occurrence & distributionGBIF121 records

Environmental DNA1 datasets · 1 countries4 detections

DNA & barcodingBOLD6 specimens

Genome at a glanceCCDB2n = 44

01Narrative

Isoetes riparia, the shore quillwort, is a species of plant in the family Isoetaceae. It can be found in rivers, creeks, and tidal mud flats in southern Quebec and southeastern Ontario, south to eastern New York. It has 5 to 35 long, erect bright green to yellow-green leaves, which are 6 to 35 centimeters long. The velum covers one fourth of the sporangium, which can be 7 millimeters long and 4 millimeters wide. The elongated ligule can grow to be 3 millimeters long. The spherical megaspores are 430 to 680 micrometers in diameter with closely set ridges. The kidney-shaped microspores are 24-35 micrometers long, and usually have spine-tipped tubercules. The megaspores can sometimes come to resemble that of either I. echinospora, if the megaspores become eroded and bear projections that could resemble spines, or I. macrospora, if the broken ridges take a certain shape.

No narrative description available for this taxon yet.

02Traits & measurements

SourcesWCVPTRYGIFT

Life cycle & reproduction1

Life spanperennial

Diet & foraging1

Parasiteindependent

Habitat & environment6

Aquaticaquatic

Climatetemperate

Climberself-supporting

Epiphyteterrestrial

Growth formherb

⚠ sources differ — GIFT: herb · TRY: Graminoid

Woodinessnon-woody

05DNA & barcoding6 specimens

A DNA barcode is a short, standardised stretch of genes that works like a fingerprint — enough to tell one species from another. Below is the molecular trace Isoetes riparia has left across the world's sequence archives.

At a glance

DNA specimens6

Marker genes2

eDNA detections4

Countries2

Marker genes sequenced

★ the standard DNA barcode for this group — the short region actually read to tell this species apart. The rest are extra genes sequenced along the way.

★rbcLa★ITS2

plant barcodefungal barcode

06Genome at a glanceCCDB

The complete instruction manual Isoetes riparia carries — its genome. We read it from three angles — how big it is, how the DNA is packed into chromosomes, and how completely it has been sequenced — and explain how to read each value as you go.

Chromosomes & ploidyhow the DNA is packaged

2n is the full chromosome count in a normal body cell; n is a gamete (egg or sperm), which carries half. Ploidy is how many complete chromosome sets each cell holds — 2× (diploid) is typical for animals, while higher levels (polyploidy) are common in plants. Click any value below to see the underlying records and sources.

Chromosomes2n = 44 n = 22

Chromosome records44–442n range44median44mode2records

Chromosome-count records — grouped by value · 2n = full set, n = gamete · click a value for sources & references

2n 442×CCDB · ipcn-api-dl

CCDB · ipcn-api-dl — Brunton, D. F., D. M. Britton & W. C. Taylor. 1994. Isoetes hyemalis, sp. nov. (Isoetaceae): a new quillwort from the southeastern United States. Castanea 59(1): 12–21.

CCDB · ipcn-api-dl — Musselman, L. J. & K. D. Heafner. 1997. Monograph of southeastern Isoetes. (Abstract). ASB Bull. 44(2): 119.

08Occurrence & distribution

Record type121 records

Wild obs. + sensor3

Museum / vouchered118

Range

Area of Occupancy AOO340 km²

Wildobservation + sensor

Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.

Coordinate accuracy

no georeferenced coordinates · 3 records without

Open the mapobservation + sensor3

Museum / Voucheredphysical evidence

Backed by a physical specimen — a herbarium sheet, sample or voucher held in a collection. “Vouchered” means supported by material evidence, not just an observation.

Coordinate accuracy20% within 1 km

≤100 m 1≤1 km 5≤10 km 22>10 km 2

30 georeferenced · 88 without coordinates

Open the institutions mapphysical evidence118

Wildobservation + sensor

Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.

10Collections & institutions

Holding institutions7 of 14 geolocated

Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.

Institution	Specimens
Université Lavallocation not on record	32
Bronx, US	12
Québec, CA	8
Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record	6
Meguro Parasitological Museumlocation not on record	5
Canadian Museum of Nature, National Herbarium of Canadalocation not on record	3
LDlocation not on record	3
Millersville, US	2
Trois-Rivières, CA	2
Toronto, CA	2
Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record	1
Tampa, US	1
Montréal, CA	1
Royal Ontario Museumlocation not on record	1

14 institutions · 79 of 118 vouchered records shown · 39 without an institution code

09Environmental DNA4 detections

Where the DNA of Isoetes riparia was picked up in samples of water, soil or air — nobody saw the organism, only its DNA left behind. A trace is a clue that the species was near, not a confirmed sighting.

Signal

Detections DNA found4

Studies independent surveys1

Countries1

Signal confidence: weakweighed across independent studies, places & mapped detections

Where its DNA was found

0 of 4 detections have coordinates

Open the map1 country0

How strong is each trace?

DNA read depthRead counts were not reported for this species — the map shows presence only, not how strong each trace was.

Modelled climatemodelled

−15°Ctemperature across detection sites+40°C

Temperature median18.9 °C 15.9–20.1

Seasonal swing summer↔winter29.5 °C

Max temp (day)23.9 °C 21.4–25.2

Min temp (night)14.5 °C 12.2–16.0

Precipitation85.6 mm/mo 76.7–98.7

Air humidity59.8 % 58.3–61.2

Moisture balance-45.6 mm/mo -65.6–-1.00

Vapour deficit868 Pa 728–966

Wind speed2.50 m/s 2.10–3.00

Cloud cover45.2 % 42.6–50.1

CHELSA 1981–2010, ~9 km grid, at location & month of 4 detection points · median with p10–p90 · reflects where sampling happened, not only the true niche

How to read this: each dot is one detection of this species' DNA in an environmental sample. The confidence meter weighs how many independent studies and places back up the signal — one detection in one study is a hint; many across several studies is solid. Records dated before 2008 (when eDNA methods began) are treated as likely mislabeled and left off the map.

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