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Eryngium aquaticum Linnaeus. Marsh Eryngo. Phen: Jul-Sep. Hab: Tidal freshwater to brackish marshes; slightly inland in wet peaty pine savannas over calcareous substrates. Dist: NY (Staten Island) and NJ to ne. FL along the Atlantic coast; Gulf Coast of FL Panhandle, s. AL, and s. MS.

Origin/Endemic status: Endemic

Synonymy ⓘ: = Eryngium aquaticum L. var. aquaticum – K1, K3, K4, MC, NY, RAB, Va, Bell (1963); = Eryngium virginianum Lam. – S; < Eryngium aquaticum L. – C, F, Fl7, G, GW2, Pa, Tat, WH3

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: OBL (taxonomic split from wetland indicator species)
  • Eastern Mountains and Piedmont: OBL
  • Northcentral & Northeast: OBL (taxonomic split from wetland indicator species)

Heliophily ⓘ: 9

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image of plant© Gary P. Fleming | Original Image ⭷
image of plantno rights reserved, uploaded by John Kees source CC0 | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plantno rights reserved, uploaded by Ingolf Askevold source CC0 | Original Image ⭷
image of plantno rights reserved, uploaded by John Kees source CC0 | Original Image ⭷
image of plant© cpgibson, some rights reserved (CC BY-NC), uploaded by cpgibson source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Matt Reala, some rights reserved (CC BY-NC), uploaded by Matt Reala source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Eric M Powell, some rights reserved (CC BY-NC), uploaded by Eric M Powell source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Eric M Powell, some rights reserved (CC BY-NC), uploaded by Eric M Powell source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Eric M Powell, some rights reserved (CC BY-NC), uploaded by Eric M Powell source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Eric M Powell, some rights reserved (CC BY-NC), uploaded by Eric M Powell source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Matt Reala, some rights reserved (CC BY-NC), uploaded by Matt Reala source CC-BY-NC, permission granted to NCBG | Original Image ⭷

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Horticultural Information

NCBG trait

Intro: Coarse, erect, aquatic perennial/biennial of tidal freshwater or brackish marshes.

Stems: Stems thick, longitudinally ridged, branched above, whitish-green.

Leaves: Leaves alternate, petiolate, linear to lance-shaped, 4-8 in. long, sometimes finely toothed (upper leaves smaller and more toothed or spiny-lobed), with notably netted veins.

Inforescence:

Flowers: Flowers in dense, compact, thimble-shaped heads surrounded by a whorl of large, spiny-toothed bracts; pale blue; tiny; consisting of 5 minute petals, 5 stamens and a divided style.

Fruits:

Comments:

Height: 1-4 ft.

plant sale text:

bloom table text:

description: Coarse, erect, aquatic perennial/biennial of tidal freshwater or brackish marshes.

stems: Stems thick, longitudinally ridged, branched above, whitish-green.

leaves: Leaves alternate, petiolate, linear to lance-shaped, 4-8 in. long, sometimes finely toothed (upper leaves smaller and more toothed or spiny-lobed), with notably netted veins.

inflorescence:

flowers: Flowers in dense, compact, thimble-shaped heads surrounded by a whorl of large, spiny-toothed bracts; pale blue; tiny; consisting of 5 minute petals, 5 stamens and a divided style.

fruits:

comments:

cultural notes:

germination code:

native range: