Monilophytes (ferns): Horsetails: Equisetales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Equisetum praealtum
FAMILY
Equisetaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
See herbarium specimens at the Atlas of Florida Vascular Plants
Learn more about Scouring Rush from the Vascular Plants of North Carolina website.
As interpreted by Christenhusz et al. (2019), American material often treated as synonymous or varietally or subspecifically distinct from Eurasian E. hyemale warrants specific recognition, based on morphology and molecular phylogeny, per Weakley's Flora (2022)
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Equisetum hyemale var. affine
FAMILY
Equisetaceae
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Equisetum hyemale var. affine
SYNONYMOUS WITH Flora of North America
Equisetum hyemale ssp. affine
SYNONYMOUS WITH Phylogenetics, classification and typification of extant horsetails (Equisetum, Equisetaceae) (Christenhusz et al., 2019)
Equisetum praealtum
SYNONYMOUS WITH The Ferns and Lycophytes of Texas (Diggs & Lipscomb, 2014)
Equisetum hyemale ssp. affine
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 002-01-002:
Equisetum hyemale var. affine FAMILY Equisetaceae
SYNONYMOUS WITH Ferns of the Southeastern States (Small, 1938)
Equisetum praealtum
COMMON NAME:
Tall Scouring-rush, River Scouring-rush
To see larger pictures, click or hover over the thumbnails.
)
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_eqro_001_lvd
)
Terry Holdsclaw tdh_e_hyemale_affine_5152
April Orange County NC
North Carolina Botanical Garden
)
Terry Holdsclaw tdh_e_hyemale_affine_5154
April Orange County NC
North Carolina Botanical Garden
Leaves scale-like, in whorls. Sporangia in a terminal cone-like cluster, per Guide to the Wildflowers of SC, 1st ed. (Porcher & Rayner, 2001).
)
Terry Holdsclaw tdh_e_hyemale_affine_1
May Orange County NC
North Carolina Botanical Garden
Stems evergreen, unbranched, bamboo-like, fertile and sterile alike, per Field Guide to the Ferns and Other Pteridophytes of Georgia (Snyder & Bruce, 1986).
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Equisetum praealtum
FAMILY
Equisetaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Equisetum hyemale var. affine
FAMILY
Equisetaceae
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Equisetum hyemale var. affine
SYNONYMOUS WITH
Flora of North America
Equisetum hyemale ssp. affine
SYNONYMOUS WITH
Phylogenetics, classification and typification of extant horsetails (Equisetum, Equisetaceae) (Christenhusz et al., 2019)
Equisetum praealtum
SYNONYMOUS WITH
The Ferns and Lycophytes of Texas (Diggs & Lipscomb, 2014)
Equisetum hyemale ssp. affine
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 002-01-002:
Equisetum hyemale var. affine
FAMILY
Equisetaceae
SYNONYMOUS WITH
Ferns of the Southeastern States (Small, 1938)
Equisetum praealtum
517
Fern/Fern ally
Perennial
Habitat: Riverbanks, alluvial floodplains, per Weakley's Flora
Native to the Carolinas & Georgia
Uncommon (rare in Coastal Plain)
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)
LEAVES:
Evergreen
Simple - scale-like
in whorls that are fused at the base into a sheath
FRUIT:
Spring/Summer/Fall
TO LEARN MORE about this plant, look it up in a good book!
- Field Guide to the Ferns and Other Pteridophytes of Georgia (Snyder & Bruce, 1986) p252
- The Ferns and Lycophytes of Texas (Diggs & Lipscomb, 2014) p158
- Ferns of Alabama (Short & Spaulding, 2012) p115
- Gardening with the Native Plants of Tennessee (Hunter, 2002) p199
- Guide to the Wildflowers of SC, 1st ed. (Porcher & Rayner, 2001) p122
- Guide to the Wildflowers of SC, 2nd ed. (McMillan, Porcher, Rayner, & White; 2022) p126
- Peterson Field Guide to Ferns of Northeastern and Central North America p344
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