Native & Naturalized Plants of the Carolinas & Georgia


2652

Fern/Fern ally
Perennial

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

Rare (an endemic)

Look for it in clay soils in low woods, seeps on sandstone or granitic rocks, per Weakley's Flora

map
To see a detailed map, click here

 

...Wet

LEAVES:
Deciduous
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 melanopoda ssp. sylvatica   FAMILY Isoetaceae

LESS THAN PLANTS NATIONAL DATABASE:
Isoetes melanopoda   FAMILY Isoetaceae

LESS THAN VASCULAR FLORA OF THE CAROLINAS (1968) 005-01-001:
Isoetes melanopoda   FAMILY Isoetaceae

LESS THAN Flora of North America
Isoetes melanopoda

LESS THAN Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Isoetes melanopoda

 

COMMON NAME:
Eastern Blackfoot Quillwort


Click or hover over the thumbnails to see larger pictures.

image of Isoetes melanopoda ssp. sylvatica

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_isme_001_lvd

        

image of Isoetes melanopoda ssp. sylvatica

Peter Schafran    psc_silv1

April    Rowan County    NC

Eagle Point

image of Isoetes melanopoda ssp. sylvatica

Peter Schafran    psc_silv1b

April    Rowan County    NC

Eagle Point

The presence of a shiny black leaf base is of limited diagnostic value, per Synopsis of Isoetes in the Southeastern United States. Castanea (Boom, 1982).

image of Isoetes melanopoda ssp. sylvatica

Bruce A. Sorrie    bas_isoetes_melanopoda1

May    Union County    NC

image of Isoetes melanopoda ssp. sylvatica

Bruce A. Sorrie    bas_isoetes_melanopoda3

May    Union County    NC

image of Isoetes melanopoda ssp. sylvatica

Peter Schafran    psc_silv2

June    Dinwiddie County    VA

Scanning electron micrograph of megaspore proximal surface at 100X

Megaspores of I. melanopoda are small, generally 300-400 micra in diameter, per Synopsis of Isoetes in the Southeastern United States. Castanea (Boom, 1982).

image of Isoetes melanopoda ssp. sylvatica

Peter Schafran    psc_silv3

June    Dinwiddie County    VA

Scanning electron micrograph of megaspore distal surface and girdle at 100X

image of Isoetes melanopoda ssp. sylvatica

Patrick D. McMillan    pdmimelanopoda_far1

Month Unknown    Lancaster County    SC

Forty Acre Rock

Leaves of Isoetes are linear-subulate, dilated at base, subterete, hollow, per Vascular Flora of the Carolinas.

image of Isoetes melanopoda ssp. sylvatica

Patrick D. McMillan    pdmimelanopoda_far2

Month Unknown    Lancaster County    SC

Forty Acre Rock

In spite of their dark spores, Forty Acre Rock's plants are not I. melanospora.