Isoetes butleri

Classification	Pteridophytes
Family	Isoetaceae
Family (Traditional)	Isoetaceae
Genus	Isoetes
Species:	Isoetes butleri Engelm.
Common Name	Limestone Quillwort
Growth Habit	fern ally
Plant Notes	**
Characteristics	Armaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Natural Area Presence: GILES; Duration: Perennial; General Ecology: Mudflat; General Ecology: Terrestrial; Growth Habit: fern ally; Moisture Requirements: Xeric; Moisture Requirements: Sub-xeric; Moisture Requirements: Dry-mesic; Moisture Requirements: Mesic; Moisture Requirements: Mesic-Hydric; Moisture Requirements: Hydric; Moisture Requirements: Wetland; Region of Origin: North America; Reproductive Phenology: May; Reproductive Phenology: June; Leaf Arrangement: basal; Leaf Complexity: simple; Leaf Dissection: 0; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaf Petiole Type: sessile; Leaf Rank: N/A; Leaf Type: grass-like; Leaf Venation: one-veined; Leaflet Margins: entire; Leaflet Number: 0; Anther Type: N/A; Carpel Number/Pistil: N/A; Fruit Complexity: N/A; Fruit Type: N/A; Fruit Wet/Dry: N/A; Hypanthium Present: No; Inflorescence Position: N/A; Inflorescence Types: N/A; Ovary Position: N/A; Overall Flower Symmetry: N/A; Ovules per Carpel: N/A; Perianth Present: No; Petal Fusion: N/A; Petal Number: N/A; Pistil Complexity: N/A; Pistil Number: N/A; Placentation Type: N/A; Sepal Fusion: N/A; Sepal Number: N/A; Sexuality: N/A; Sporangium Arrangement: upright panicle; Stamen Number: N/A; Tepal Number: N/A
C value	8
Status	Native; AGCP (OBL), EMP (FACW) (NWPL); TN[SNR] KY[S1] (State Rank); G4 (Global Rank)
Specimen(s)	View and Download Specimen Details »

** Not applicable or data not available.

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Species Distribution Map

This species has been reported in the counties highlighted in the interactive distribution map below. Click on a county to display the its name. Click the question mark icon () to view additional information about the ecoregions shown. In the map legend, there are links to toggle the visibility of the ecoregions and/or their labels. In addition, clicking on an ecoregion name will highlight that region on the map.

State Boundaries
Counties
Counties - Species Present

Ecoregions

Southeastern Plains
- Blackland Prarie
Blue Ridge Mountains
Ridge and Valley
Cumberland Plateau
Cumberland Mountains
Allegheny Plateau

Interior Plateau
- Bluegrass Region
- Nashville Basin
- Pennyroyal Karst Plain
- Western Highland Rim
- Eastern Highland Rim

Interior River Valleys and Hills
- Shawnee / Caseyville Hills
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
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Synonyms

No synonyms exist for this species.

Specimens and Distribution

This species has been reported in the following counties by the herbaria listed. An overview of the individual specimens are provided in the table that follows. Click on the accession number to view details; click on column headers to sort.

Counties included on distribution map: Logan (KY), Simpson (KY), Warren (KY), Bedford (TN), Blount (TN), Davidson (TN), Giles (TN), Lincoln (TN), Marshall (TN), Maury (TN), Rutherford (TN), Van Buren (TN), Williamson (TN), Wilson (TN)

Herbaria represented by specimen data listed below: EKY, KNK, TENN, UCHT

Range of years during which specimens were collected: 1934 - 2002

Accession No. (click for full details)	County	State	Coll. Date	Collector & Collection No.	Herbarium & Herbarium Name Used
31973000004308	Logan	Kentucky		Heafner, Kerry	KNK Isoetes butleri
TENN-V-0001406	Williamson	Tennessee	11 May 1952	Jesse M. Shaver 10962	TENN Isoetes butleri
31234100018017	Wilson	Tennessee	02 May 1980	T. Filipczak 91	EKY Isoetes butleri
TENN-V-0001407	Wilson	Tennessee	02 Jun 1989	R. Kral 76492	TENN Isoetes butleri
TENN-V-0001411	Wilson	Tennessee	22 Apr 1936	H. K. Svenson 7749	TENN Isoetes butleri
31234100747532	Simpson	Kentucky		Marc Evans	EKY Isoetes butleri
TENN-V-0001410	Wilson	Tennessee	18 May 1941	Jesse M. Shaver 2374	TENN Isoetes butleri
31973000004307	Williamson	Tennessee	04 Jun 1984	Kral, Robert 71529	KNK Isoetes butleri
TENN-V-0001419	Davidson	Tennessee	28 Apr 1974	R. Kral 52572	TENN Isoetes butleri
TENN-V-0001421	Wilson	Tennessee	25 May 1978	Brian Boom 107	TENN Isoetes butleri
TENN-V-0001404	Rutherford	Tennessee	10 May 1958	A.J. Sharp, A.C. Koelling 23142	TENN Isoetes butleri
TENN-V-0001417	Davidson	Tennessee	25 May 1935	Jesse M. Shaver 2351	TENN Isoetes butleri
TENN-V-0210005	Davidson	Tennessee		A. Gattinger	TENN Isoetes butleri
TENN-V-0001416	Davidson	Tennessee	30 Mar 1934	L. R. Hesler 116	TENN Isoetes butleri
TENN-V-0001413	Rutherford	Tennessee	16 May 1959	A. J. Sharp 25916	TENN Isoetes butleri
TENN-V-0001486	Warren	Kentucky			TENN Isoetes butleri
TENN-V-0210006	Rutherford	Tennessee		A. Gattinger	TENN Isoetes butleri
TENN-V-0001408	Wilson	Tennessee	18 May 1979	Brian Boom 342	TENN Isoetes butleri
TENN-V-0001420	Wilson	Tennessee	26 May 1977	David H. Webb, Eugene Wofford, A.M. Evans 883	TENN Isoetes butleri
TENN-V-0001415	Davidson	Tennessee	31 Mar 1935	Jesse M. Shaver 2347	TENN Isoetes butleri
UCHT006102	Wilson	Tennessee			UCHT Isoetes butleri
TENN-V-0001409	Wilson	Tennessee	25 May 1978	Brian Boom 117	TENN Isoetes butleri
TENN-V-0001412	Wilson	Tennessee	02 May 1980	W. Nanek 19	TENN Isoetes butleri
TENN-V-0001418	Davidson	Tennessee	31 Mar 1934	L.R. Hesler, Harold Bold, A.J. Sharp 114	TENN Isoetes butleri
TENN-V-0001405	Williamson	Tennessee	11 May 1952	Jesse M. Shaver 10964	TENN Isoetes butleri
TENN-V-0001414	Giles	Tennessee	17 Mar 2002	Dwayne Estes 3043	TENN Isoetes butleri

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Isoetes butleri

Related Links

Species Distribution Map

Ecoregions

Synonyms

Specimens and Distribution

Plant Photos