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Field Descriptions
7 matching records found.
Label Query: Genus = "Spirodela", Species = "polyrhiza"
Araceae
1. Spirodela polyrhiza (L.) Schleid.
U.S.A., Washington, San Juan County:
South end of pond, northeast side of Mitchell Bay Road, 2.3 air kilometers west-northwest of Cady Mountain, San Juan Island.
Elev. 50 m. 48.5617° N, 123.1515° W. Coordinate Source: Specimen Label.
In shallow water, shade of Alnus rubra, with Lemna turionifera, Ricciocarpus natans, Wolffia borealis, W. columbiana. 6-7 veins, dark purple below; common floating aquatic. Origin: Native.
WTU 409838; Barcode: WTU-V-023815
Peter F. Zika 28163    22 Jul 2016
1. Spirodela polyrhiza (L.) Schleid.
Database ID
3102897 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
409838 
Barcode
WTU-V-023815 
Other Numbers
 
Family
Araceae 
Name on Specimen
Spirodela polyrhiza (L.) Schleid. 
Accepted Name
Spirodela polyrhiza (L.) Schleid. 
Annotation History
1. Spirodela polyrhiza (L.) Schleid.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
28163 
Other Collectors
 
Date Collected
22 Jul 2016 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
San Juan 
Locality
South end of pond, northeast side of Mitchell Bay Road, 2.3 air kilometers west-northwest of Cady Mountain, San Juan Island. 
Elevation
50 m. 
Coordinates
48.5617° N, 123.1515° W 
Site Description
In shallow water, shade of Alnus rubra, with Lemna turionifera, Ricciocarpus natans, Wolffia borealis, W. columbiana. 
Specimen Notes
6-7 veins, dark purple below; common floating aquatic. 
Phenology
 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

Araceae
2. Spirodela polyrhiza (L.) Schleid.
U.S.A., Washington, Ferry County:
North side of Route 20, Sherman Creek drainage, 2.9 air kilometers northwest of Bangs Mountain.
Elev. 695 m. 48.5793° N, 118.2601° W. Coordinate Source: Specimen Label.
On small pond, with Phalaris, Bidens cernua, Riccia fluitans, Lemna trisulca, L. turionifera. Floating aquatic, dark purple below, 5-7 veins, common. Origin: Native.
WTU 412231; Barcode: WTU-V-026642
Peter F. Zika 28373    30 Aug 2016
2. Spirodela polyrhiza (L.) Schleid.
Database ID
3141348 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
412231 
Barcode
WTU-V-026642 
Other Numbers
 
Family
Araceae 
Name on Specimen
Spirodela polyrhiza (L.) Schleid. 
Accepted Name
Spirodela polyrhiza (L.) Schleid. 
Annotation History
1. Spirodela polyrhiza (L.) Schleid.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
28373 
Other Collectors
 
Date Collected
30 Aug 2016 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Ferry 
Locality
North side of Route 20, Sherman Creek drainage, 2.9 air kilometers northwest of Bangs Mountain. 
Elevation
695 m. 
Coordinates
48.5793° N, 118.2601° W 
Site Description
On small pond, with Phalaris, Bidens cernua, Riccia fluitans, Lemna trisulca, L. turionifera. 
Specimen Notes
Floating aquatic, dark purple below, 5-7 veins, common. 
Phenology
 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

Araceae
3. Spirodela polyrhiza (L.) Schleid.
U.S.A., Oregon, Clatsop County:
Sloughs on both sides of road, at junction of Columbia Beach Lane and Ridge Road, East Fork Neacoxie Creek.
Elev. 8 m. 46.1328° N, 123.935° W. Coordinate Source: Specimen Label.
Full sun, surface of sloughs, with Nuphar, Myriophyllum aquaticum, Lemna turionifera, L. minuta, Landoltia, Hydrocotyle ranunculoides. Floating aquatic, fronds with 5-7 veins, 5-8 roots, dark purple below; occasional. Origin: Native.
WTU 412184; Barcode: WTU-V-026604
Peter F. Zika 28274    14 Aug 2016
3. Spirodela polyrhiza (L.) Schleid.
Database ID
3141753 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
412184 
Barcode
WTU-V-026604 
Other Numbers
 
Family
Araceae 
Name on Specimen
Spirodela polyrhiza (L.) Schleid. 
Accepted Name
Spirodela polyrhiza (L.) Schleid. 
Annotation History
1. Spirodela polyrhiza (L.) Schleid.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
28274 
Other Collectors
 
Date Collected
14 Aug 2016 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Clatsop 
Locality
Sloughs on both sides of road, at junction of Columbia Beach Lane and Ridge Road, East Fork Neacoxie Creek. 
Elevation
8 m. 
Coordinates
46.1328° N, 123.935° W 
Site Description
Full sun, surface of sloughs, with Nuphar, Myriophyllum aquaticum, Lemna turionifera, L. minuta, Landoltia, Hydrocotyle ranunculoides. 
Specimen Notes
Floating aquatic, fronds with 5-7 veins, 5-8 roots, dark purple below; occasional. 
Phenology
 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

Araceae
4. Spirodela polyrhiza (L.) Schleid.
U.S.A., Washington, Pierce County:
Oxbow, Training Area 18, Joint Base Lewis-McChord, 100 meters southeast of bridge over Nisqually River.
Elev. 30 m. 46.9864° N, 122.63099° W. Coordinate Source: Specimen Label.
Shallow water and along margin of beaver dam, full sun or partial shade, with Ricciocarpus natans, Azolla filiculoides, Wolffia brasiliensis, W. columbiana, Potamogeton natans, Elodea canadensis, Ceratophyllum, Carex cusickii, Alnus rubra. Floating aquatic, lower surface dark purple, uncommon. Origin: Native.
WTU 412131; Barcode: WTU-V-026581
Peter F. Zika 28239    12 Aug 2016
4. Spirodela polyrhiza (L.) Schleid.
Database ID
3142324 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
412131 
Barcode
WTU-V-026581 
Other Numbers
 
Family
Araceae 
Name on Specimen
Spirodela polyrhiza (L.) Schleid. 
Accepted Name
Spirodela polyrhiza (L.) Schleid. 
Annotation History
1. Spirodela polyrhiza (L.) Schleid.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
28239 
Other Collectors
 
Date Collected
12 Aug 2016 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Pierce 
Locality
Oxbow, Training Area 18, Joint Base Lewis-McChord, 100 meters southeast of bridge over Nisqually River. 
Elevation
30 m. 
Coordinates
46.9864° N, 122.63099° W 
Site Description
Shallow water and along margin of beaver dam, full sun or partial shade, with Ricciocarpus natans, Azolla filiculoides, Wolffia brasiliensis, W. columbiana, Potamogeton natans, Elodea canadensis, Ceratophyllum, Carex cusickii, Alnus rubra. 
Specimen Notes
Floating aquatic, lower surface dark purple, uncommon. 
Phenology
 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

Araceae
5. Spirodela polyrhiza (L.) Schleid.
U.S.A., Washington, Pacific County:
Artificial pond near Willows Road, Oceanview.
Elev. 5 m. 46.32° N, 124.06° W. Coordinate Source: Specimen Label.
Full sun, shallow water, with Eleocharis, Lemna turionifera, artificial pond. Floating aquatic, 7 nerves, dark purple below; common.
WTU 412543; Barcode: WTU-V-027116
Peter F. Zika 28278B    14 Aug 2016
5. Spirodela polyrhiza (L.) Schleid.
Database ID
3146159 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
412543 
Barcode
WTU-V-027116 
Other Numbers
 
Family
Araceae 
Name on Specimen
Spirodela polyrhiza (L.) Schleid. 
Accepted Name
Spirodela polyrhiza (L.) Schleid. 
Annotation History
1. Spirodela polyrhiza (L.) Schleid.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
28278B 
Other Collectors
 
Date Collected
14 Aug 2016 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Pacific 
Locality
Artificial pond near Willows Road, Oceanview.  
Elevation
5 m. 
Coordinates
46.32° N, 124.06° W 
Site Description
Full sun, shallow water, with Eleocharis, Lemna turionifera, artificial pond.  
Specimen Notes
Floating aquatic, 7 nerves, dark purple below; common.  
Phenology
 
Origin
 
Cultivated?
No 
Imaged?
Yes 

Araceae
6. Spirodela polyrhiza (L.) Schleid.
U.S.A., Washington, Klickitat County:
Downriver from Crow Butte.
45.83825° N, 119.89238° W. Datum: WGS 84. Coordinate Source: GPS.
In backwater along shore of Columbia River in 1.5m deep water, with Bidens sp., Azolla, Lemna, and Spirodela polyrhiza. Phenology: Vegetative. Origin: Native.
WTU
Peter Dunwiddie PWD-18-346    10 Jul 2018
with Peter Zika
6. Spirodela polyrhiza (L.) Schleid.
Database ID
3279333 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Spirodela polyrhiza (L.) Schleid. 
Accepted Name
Spirodela polyrhiza (L.) Schleid. 
Annotation History
1. Spirodela polyrhiza (L.) Schleid.
    Annotated by Peter F. Zika, 2019. Sources: Flora PNW, 2nd.  
Type Notes
 
Collector
Peter Dunwiddie 
Collection #
PWD-18-346 
Other Collectors
Peter Zika 
Date Collected
10 Jul 2018 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Klickitat 
Locality
Downriver from Crow Butte. 
Elevation
 
Coordinates
45.83825° N, 119.89238° W 
Site Description
In backwater along shore of Columbia River in 1.5m deep water, with Bidens sp., Azolla, Lemna, and Spirodela polyrhiza. 
Specimen Notes
 
Phenology
Vegetative 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
7. Spirodela polyrhiza (L.) Schleid.
U.S.A., Oregon, Gilliam County:
About 2.8 miles east of Arlington.
45.75187993° N, 120.16967° W. Datum: WGS 84. Coordinate Source: Google Earth.
Common in sheltered spots in backwater on river, floating in tangle of driftwood, with Hydrocotyle ranunculoides. Origin: Native.
WTU
Peter F. Zika PWD-19-310    29 Jul 2019
with Peter Dunwiddie
7. Spirodela polyrhiza (L.) Schleid.
Database ID
3281602 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Spirodela polyrhiza (L.) Schleid. 
Accepted Name
Spirodela polyrhiza (L.) Schleid. 
Annotation History
1. Spirodela polyrhiza (L.) Schleid.
    Annotated by Peter F. Zika, 2019. Sources: Flora PNW, 2nd.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
PWD-19-310 
Other Collectors
Peter Dunwiddie 
Date Collected
29 Jul 2019 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Gilliam 
Locality
About 2.8 miles east of Arlington. 
Elevation
 
Coordinates
45.75187993° N, 120.16967° W 
Site Description
Common in sheltered spots in backwater on river, floating in tangle of driftwood, with Hydrocotyle ranunculoides. 
Specimen Notes
 
Phenology
 
Origin
Native 
Cultivated?
No 
Imaged?
No 

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Database Field Descriptions:
Database ID
Each of our backend databases assigns a unique and persistent integer ID to each specimen record. A GUID (globally unique identifier) can be formed from this by combining it with the herbarium and collection acronyms (example: WTU-VP-12733).
Herbarium
Every herbarium is referred to by a unique acronym. Ours is WTU, which stands for Washington Territorial University. Our database also includes some specimens housed at NOCA (North Cascades National Park Herbarium) and MORA (Mount Rainier National Park Herbarium). For a complete listing of herbarium acronyms, see Index Herbariorum.
Collection
WTU's specimens are physically housed in separate collections according to taxonomic groups: Vascular Plants, Bryophytes, Algae, Lichens, and Fungi.
Dataset
Some specimens are grouped into "Datasets," representing such things as incorporated herbaria or major collecting projects.
Accession
Each of WTU's Vascular Plant specimens is assigned an accession number. Our other collections lack accession numbers (see Barcode instead). Ideally, each specimen would have a unique accession number, but this fails in practice. Some accession numbers include "JWT" after the number; these indicate specimens originating from the herbarium of J. William Thompson that were integrated into WTU's collections but not re-accessioned with WTU numbers. Accession numbers followed by an "A", "B", or other single letter represent sheets with multiple collections mounted on them, all using the same accession number.
Barcode
Our Bryophyte, Algae, Lichen, Fungi, and some Vascular Plant specimens are assigned pre-printed barcode stickers. These follow the format "WTU-C-######", where C represents a code for the collection (one of: V, B, A, L, F) and ###### represents a zero-padded, six-digit number.
Other Numbers
Specimens collected from North Cascades and Mount Rainier National Parks are assigned National Park Service accession and catalog numbers. These numbers are listed here.
Family
The scientific name of the family. Our database generally uses AGPIII and other current sources for vascular plant family names. However, our physical Vascular Plant collection is organized by the older Englerian sequence.
Accepted Name
For Vascular Plants, this gives the accepted name by which the specimen is currently known. The accepted name is derived by looking up the most recent annotation name in a synonymy table and finding its corresponding accepted name.
Annotation History
The sequence of annotations and scientific names given on the physical specimen is listed here, in order from the first to most recent. We treat the name on the original label as the first annotation.
Type Notes
If this is a type specimen, then information about its type status (holotype, isotype, etc.) and the name(s) for which it is a type is provided here.
Collector
The person who collected this specimen, as given on the label, and whose name is associated with the collection number on the label. If no collector name is given, we enter "unknown" into this field.
Collection #
A unique number assigned to the specimen by the collector. Different collectors use different numbering schemes; these may include the addition of prefixes (such as their initials or the year) or suffixes (such as an A or B). In the database, any prefixes and suffixes are included in the Collector's Number field exactly as they appear on the specimen label. When no collector number is given, we type "s.n." in this field.
Other Collectors
Other collectors that are listed on the label along with the primary collector, but whose collection number was not assigned to this specimen.
Date Collected
The date on which the specimen was collected, split up between day, month, and year in the database. Months are stored as nubmers (1-12) but displayed as three-letter abbreviations. Years are alway 4-digits long. Occasionally the label may give a range of dates. In such cases, the first date in the range is used as the collection date, and the entire collection date is entered into the Verbatim Date field as it appears on the label. If no date is given, then the date fields are left blank and a note is made in the Verbatim Date field.
Verbatim Date
The literal date string as displayed on the label; only used for dates that cannot be represented by a single day, month, and year.
Country
Name of the country from which the specimen was collected. Specimens from the United States of America are entered as "U.S.A."
State or Province
Name of the state or province from which the specimen was collected, if given on the label. U.S. states are spelled out in full.
County
Name of the county, municipality, borough, parish, or equivalent political unit from which the specimen was collected, if given on the label. The designation (such as "county") is not included in the field value.
Locality
A text description of the location where the specimen was collected, as given on the specimen label. May include national park, national forest, and other land use designations. Older collections often have short and imprecise locality data. Detailed locality data for rare species (threatened, endangered, sensitive, watch, ...) is included in our database but omitted from the search results.
Elevation
Elevations may be given either in feet or meters, and may include a minimum and maximum elevation, representing a range.
Coordinates
May include TRS/PLSS (township, range, section, quarter, etc.), latitude/longitude, and UTM. Coordinates for arare species are included in our database but omittedfrom the search results.
Site Description
This field includes all label information characterizing the site, such habitat, vegetation zone/association, substrate, slope, moisture, associated species, and so on - as the information appears on the specimen label.
Specimen Notes
Includes any characteristics pertaining to the plant specimen itself, such as flower color, fruit length, and plant height, along with information about the species, such as abundance and the precise location and micro-habitat where collected. Also includes any notes or text on the specimen that does not better fit into another field.
Phenology
Specifies the sexual maturity/condition of the specimen, such as flowering, fruiting, cone-bearing, spore-bearing, fertile, or sterile. Phenology is generally not given on the label; instead the person entering the record examines the specimen and selects the appropriate value.
Origin
Specifies whether the specimen is native or introduced to the state or country where it was collected. Origin data is rarely found on the specimen label; instead, it is entered during data entry either from a lookup table or from the date entry personnel's own knowledge. Origin data should be considered supplemental information, and should not be relied on as authoritative.
Cultivated
A Yes/No flag indicating if this is a cultivated specimen. Cultivated specimens generally do not represent valid distribution records and should be excluded from range maps or other geographic analyses.


Disclaimer:

WTU makes a reasonable effort to prevent and correct data entry errors; however, we cannot guarantee that our database is free from typos, misidentifications, or inaccurate label data. Please use the information at your own discretion. Error corrections and comments can be sent to Ben Legler or David Giblin.