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Accession Data:

Egeria densa Planch.

  • Common Name: Brazilian Elodea
  • Family: Hydrocharitaceae Juss.

  • Country of Origin: central Minas Gerais region of Brazil and coastal Argentina and Uruguay
  • Habitat: submersed, freshwater perennial herb, generally rooted on the bottom

  • Description: syn. Elodea densa (Planch.) Casp.; Anacharis densa (Planch.) Vict.

    Submersed aquatic dioecious herb, stems stout, several feet long; leaves crowded, in whorls of 4-5, linear-lanceolate, to 1.5 inches long and 3/16 inch wide; filaments club-shaped, female flowers with petals to 5/16 inch long; fruit 5/16 inch long.

  • Culture:
    pH: 6.5-8.0
    6-20 dH
    59-75°F (15-24°C)
    It will tend to be paler and thinner if grown in softer, more acidic water.
    Moderate to bright light, does fine in plain gravel substrate.
  • USDA Zone: 5a-11

Accession Data:

  • Accession # 200700213
  • Source: Robert Capers
  • Provenance:
    Robert Capers
    Mono Pond, Columbia, CT 11/13/07
    
  • Accession Date: 11-14-2007
  • Bench: 6902 - Array 1, Tank 2
    • Currently: active - healthy
    • Qty: 1 confirmed on 03-03-2025
  • Restrictions:
    • Potentially Invasive Plant - Plants are not to leave Greenhouse!

Classification:

  • Division: Magnoliophyta
  • Class: Liliopsida
  • SubClass: monocots
  • Order: Alismatales
  • SubOrder:
  • Family: Hydrocharitaceae
  • SubFamily:
  • Tribe:
  • SubTribe:

Flowering Data:

This accession has been observed in bloom on:
YearJanFebMarAprMayJunJulAugSepOctNovDec
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
2008

References (internal):

  • Aquatic Plants
  • Benthophyte
  • Invasive Species
  • EEB 3271 - Systematic Botany
  • EEB Greenhouse Holdings native to: Brazil Southeast / Brazil South / Argentina Northeast / Uruguay

References (external):

  1. Hortus Third, LH Bailey Hortorium, 1976
  2. The Plant List (2013). Version 1.1. Last accessed on Wednesday, September 07, 2016.
  3. WCSP (2016). World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Last accessed on Wednesday, September 07, 2016.

data regenerated on Mon, 03 Mar 2025 11:09:02 -0500 [bcm v4.0]

Images:

Egeria densa

Additional images for this accession:

Click on thumbnails to enlarge

Current Accessions in the Hydrocharitaceae

  • Egeria densa W/C
  • Elodea canadensis
  • Limnobium laevigatum
  • Vallisneria americana
W/C = Wild Collected
= indicates flowering in past 14 days
= images available for this accession
= map available for this accession
= accession added within past 90 days
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