Lycophytes: Isoetales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Isoetes engelmannii
FAMILY
Isoetaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Learn more about Isoetes from the Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Isoetes engelmannii
FAMILY
Isoetaceae
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Isoetes engelmannii
INCLUDED WITHIN Flora of North America
Isoetes engelmannii
SYNONYMOUS WITH Georgia Quillworts (Musselman, 2001)
Isoetes engelmannii
INCLUDED WITHIN VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 005-01-002:
Isoetes engelmannii FAMILY Isoetaceae
INCLUDED WITHIN Ferns of the Southeastern States (Small, 1938)
Isoetes engelmannii var. engelmannii
COMMON NAME:
Engelmann's Quillwort, Appalachian Quillwort
To see larger pictures, click or hover over the thumbnails.
)
Patrick D. McMillan pdmiengelmanii_pc1
April Pickens County SC
Poe Creek State Forest
I. engelmannii leaves can be up to 1m long and are usually dark green, per Georgia Quillworts (Musselman, 2001).
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Peter Schafran psc_eng4
April Rockbridge County VA
Depression pond. Megaspores at 63X, not cleaned
)
Peter Schafran psc_eng2
May Stanly County NC
Morrow Mountain State Park
Plants amphibious in wet ditches, running or standing shallow fresh water, per Synopsis of Isoetes in the Southeastern United States (Boom, 1982).
)
Peter Schafran psc_eng1
June Cumberland County TN
Megaspores at 63X
)
Peter Schafran psc_eng3
August Polk County TN
Riverbank
)
Peter Schafran psc_eng5
Month Unknown
Scanning electron micrograph of megaspores at 100X
Megaspores light cream or white, reticulate, 400-600 micra in diameter, per Synopsis of Isoetes in the Southeastern United States (Boom, 1982).
)
Peter Schafran psc_eng6
Month Unknown
Scanning electron micrograph of megaspores at 100X
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Isoetes engelmannii
FAMILY
Isoetaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Isoetes engelmannii
FAMILY
Isoetaceae
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Isoetes engelmannii
INCLUDED WITHIN
Flora of North America
Isoetes engelmannii
SYNONYMOUS WITH
Georgia Quillworts (Musselman, 2001)
Isoetes engelmannii
INCLUDED WITHIN
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 005-01-002:
Isoetes engelmannii
FAMILY
Isoetaceae
INCLUDED WITHIN
Ferns of the Southeastern States (Small, 1938)
Isoetes engelmannii var. engelmannii
2601
Fern/Fern ally; Emergent aquatic (rooted)
Perennial
Habitat: Usually in permanent water bodies with active current, per Weakley's Flora
Native to the Carolinas & Georgia
Common (rare in GA 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
Leaves whorled, at least at maturity
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) p234
- Ferns of Alabama (Short & Spaulding, 2012) p101
- Peterson Field Guide to Ferns of Northeastern and Central North America p367
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