Juncus validus

Classification	Monocots
Family	Juncaceae
Family (Traditional)	Juncaceae
Genus	Juncus
Species:	Juncus validus Coville
Common Name	Roundhead Rush
Growth Habit	graminoid
Plant Notes	**
Characteristics	Armaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Natural Area Presence: LGS; Duration: Perennial; General Ecology: Terrestrial; Growth Habit: graminoid; Moisture Requirements: Hydric; Moisture Requirements: Wetland; Region of Origin: North America; Reproductive Phenology: July; Reproductive Phenology: August; Reproductive Phenology: September; Leaf Arrangement: alternate; Leaf Arrangement: basal; Leaf Complexity: simple; Leaf Dissection: 0; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaf Petiole Type: sessile; Leaf Type: grass-like; Leaf Venation: parallel; Leaflet Margins: entire; Leaflet Number: 0; Base Flower Color: Brown (incl. Maroon); Base Flower Color: Green; Fruit Dehiscence: Yes; Fruit Type: Capsule; Fruit Wet/Dry: Dry; Hypanthium Present: No; Ovary Position: Superior; Overall Flower Symmetry: Actinomorphic; Perianth Present: Yes; Sporangium Arrangement: N/A
C value	2
Status	Native; AGCP (FACW), EMP (FACW) (NWPL); TN[SNR] KY[S1?] (State Rank); G5 (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: McCreary (KY), Carroll (TN), Cumberland (TN), Fayette (TN), Hardin (TN), Shelby (TN), Stewart (TN), White (TN)

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

Range of years during which specimens were collected: 1966 - 2010

Accession No. (click for full details)	County	State	Coll. Date	Collector & Collection No.	Herbarium & Herbarium Name Used
31234100098662	McCreary	Kentucky	08 Aug 1996	Gary W. Libby 1403	EKY Juncus validus
APSC0035639	Fayette	Tennessee			APSC Juncus validus
APSC0097089	Shelby	Tennessee			APSC Juncus validus
APSC0035641	Carroll	Tennessee			APSC Juncus validus
TENN-V-0242206	Hardin	Tennessee			TENN Juncus validus
APSC0072693	White	Tennessee			APSC Juncus validus
APSC0035644	Hardin	Tennessee	13 Sep 1966		APSC Juncus validus
31973000014508	McCreary	Kentucky			KNK Juncus validus
31973000014509	McCreary	Kentucky			KNK Juncus validus
APSC0072692	Cumberland	Tennessee			APSC Juncus validus
APSC0035638	Stewart	Tennessee	25 Jul 1987	Edward Chester	APSC Juncus validus
APSC0035640	Hardin	Tennessee	19 Jul 1988	Milo Pyne	APSC Juncus validus
31973000014510	McCreary	Kentucky			KNK Juncus validus
APSC0035637	Stewart	Tennessee	25 Jul 1987	Edward Chester	APSC Juncus validus
APSC0035643	Hardin	Tennessee	15 Jul 2010	David H. Webb	APSC Juncus validus

View a List of All Ecological Communities

Juncus validus

Related Links

Species Distribution Map

Ecoregions

Synonyms

Specimens and Distribution

Plant Photos