Native & Naturalized Plants of the Carolinas & Georgia


2601

Fern/Fern ally; Emergent aquatic (rooted)
Perennial

Native to the Carolinas & Georgia
Documented growing wild in GA NC SC

Common (rare in GA Coastal Plain)

Look for it usually in permanent water bodies with active current, per Weakley's Flora

map
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...Wet

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!



Lycophytes: Isoetales

WEAKLEY'S FLORA (5/21/15):
Isoetes engelmannii   FAMILY Isoetaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Isoetes engelmannii   FAMILY Isoetaceae

LESS THAN VASCULAR FLORA OF THE CAROLINAS (1968) 005-01-002:
Isoetes engelmannii   FAMILY Isoetaceae

SYNONYMOUS WITH Georgia Quillworts (Musselman, 2001)
Isoetes engelmannii

LESS THAN Manual of the Southeastern Flora (Small, 1933)
Isoetes engelmannii var. engelmannii

 

COMMON NAME:
Engelman's Quillwort


Click or hover over the thumbnails to see larger pictures.

image of Isoetes engelmannii

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. Tipularia (Musselman, 2001).

image of Isoetes engelmannii

Peter Schafran    psc_eng4

April    Rockbridge County    VA

Depression pond. Megaspores at 63X, not cleaned

image of Isoetes engelmannii

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. Castanea (Boom, 1982).

image of Isoetes engelmannii

Peter Schafran    psc_eng1

June    Cumberland County    TN

Megaspores at 63X

image of Isoetes engelmannii

Peter Schafran    psc_eng3

August    Polk County    TN

Riverbank

image of Isoetes engelmannii

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. Castanea (Boom, 1982).

image of Isoetes engelmannii

Peter Schafran    psc_eng6

Month Unknown        

Scanning electron micrograph of megaspores at 100X