Proserpinaca intermedia

Family (Traditional)Haloragaceae
Species:Proserpinaca intermedia Mack.
Common NameIntermediate Mermaidweed
Growth Habitforb
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Natural Area Presence: BE; Duration: Perennial; General Ecology: Aquatic; Growth Habit: forb; Moisture Requirements: Hydric; Moisture Requirements: Wetland; Region of Origin: North America; Reproductive Phenology: July; Reproductive Phenology: August; Reproductive Phenology: September; Reproductive Phenology: October; Leaf Arrangement: alternate; Leaf Complexity: simple; Leaf Dissection: 0; Leaf Persistance: Deciduous; Leaf Persistance: Evergreen; Leaf Persistance: Tardily Deciduous; Leaflet Number: 0; Base Flower Color: Green; Base Flower Color: Yellow; Fruit Dehiscence: No; Fruit Type: Achene; Fruit Type: Drupe; Fruit Wet/Dry: Dry; Fruit Wet/Dry: Wet; Overall Flower Symmetry: Actinomorphic; Placentation Type: Apical; Sporangium Arrangement: N/A
C value 5
StatusNative; AGCP (OBL), EMP (OBL) (NWPL); TN[SNR] (State Rank); G4?Q (Global Rank)
Specimen(s) View and Download Specimen Details »

** Not applicable or data not available.

Currently no photos are available for this plant.

Species Distribution Map

This species has been reported in the counties highlighted in the interactive distribution map below. Click on a county to display the its name. Click the question mark icon () to view additional information about the ecoregions shown. In the map legend, there are links to toggle the visibility of the ecoregions and/or their labels. In addition, clicking on an ecoregion name will highlight that region on the map.

  • State Boundaries
  • Counties
  • Counties - Species Present
  • Southeastern Plains
    • Blackland Prarie
  • Blue Ridge Mountains
  • Ridge and Valley
  • Cumberland Plateau
  • Cumberland Mountains
  • Allegheny Plateau
  • Interior Plateau
    • Bluegrass Region
    • Nashville Basin
    • Pennyroyal Karst Plain
    • Western Highland Rim
    • Eastern Highland Rim


No synonyms exist for this species.

Specimens and Distribution

This species has been reported in the following counties by the herbaria listed. An overview of the individual specimens are provided in the table that follows. Click on the accession number to view details; click on column headers to sort.

Counties included on distribution map: Coffee (TN), Grundy (TN)

Herbaria represented by specimen data listed below: APSC, EKY, UCHT, UOS

Range of years during which specimens were collected: 1987 - 2001

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
31234100459104 Grundy Tennessee 01 Jul 1987 Ronald L. Jones
Proserpinaca intermedia
APSC0112358 Coffee Tennessee
Proserpinaca intermedia
31234100459096 Grundy Tennessee 07 Aug 1987 Ronald L. Jones
Proserpinaca intermedia
31234100459088 Coffee Tennessee 01 Jun 2001 Dwayne Estes
Proserpinaca intermedia
UOS03219 Coffee Tennessee 18 Sep 1996 Douglas E. Kennemore, Jr.
Proserpinaca intermedia
APSC0111595 Coffee Tennessee
Proserpinaca intermedia
UCHT033505 Coffee Tennessee
Proserpinaca intermedia
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