Silphium mohrii

Classification	Dicots
Family	Asteraceae
Family (Traditional)	Asteraceae
Genus	Silphium
Species:	Silphium mohrii Small
Common Name	Mohrs Rosinweed; Shaggy Rosinweed
Growth Habit	forb
Plant Notes	**
Characteristics	Armaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Natural Area Presence: BE; Natural Area Presence: GILES; Natural Area Presence: LGS; Duration: Perennial; General Ecology: Terrestrial; Growth Habit: forb; 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: August; Reproductive Phenology: September; Reproductive Phenology: October; Leaf Arrangement: alternate; Leaf Arrangement: basal; Leaf Arrangement: opposite; Leaf Complexity: simple; Leaf Dissection: 0; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaf Petiole Type: petiolate; Leaf Petiole Type: sessile; Leaf Type: broadleaf; Leaflet Margins: dentate; Leaflet Margins: entire; Leaflet Number: 0; Anther Type: Basifixed; Base Flower Color: Yellow; Carpel Number/Pistil: 1; Fruit Complexity: Simple; Fruit Dehiscence: No; Fruit Type: Cypsela; Fruit Wet/Dry: Dry; Hypanthium Present: No; Inflorescence Position: terminal; Inflorescence Types: head; Ovary Position: Inferior; Overall Flower Symmetry: Actinomorphic; Overall Flower Symmetry: Zygomorphic; Ovules per Carpel: 1; Perianth Present: Yes; Petal Fusion: Yes; Petal Number: 5; Pistil Complexity: Simple; Pistil Number: 1; Placentation Type: Basal; Sepal Fusion: N/A; Sepal Number: N/A; Sexuality: monoclinous; Sporangium Arrangement: N/A; Stamen Number: 5; Tepal Number: N/A
C value
Status	Native; TN[S3S4] (State Rank); G3?Q (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: Coffee (TN), Cumberland (TN), Franklin (TN), Giles (TN), Grundy (TN), Lawrence (TN), Lincoln (TN), Marion (TN), Maury (TN), Warren (TN)

Herbaria represented by specimen data listed below: APSC, EKY, MTSU, TENN, UOS, VDB

Range of years during which specimens were collected: 1984 - 2010

Accession No. (click for full details)	County	State	Coll. Date	Collector & Collection No.	Herbarium & Herbarium Name Used
31234100288255	Franklin	Tennessee	22 Sep 1990	Ronald L. Jones 6712	EKY Silphium mohrii
31234100059805	Coffee	Tennessee	12 Oct 1991	Ronald L. Jones 6998	EKY Silphium mohrii
TENN-V-0226935	Maury	Tennessee			TENN Silphium mohrii
TENN-V-0226937	Maury	Tennessee			TENN Silphium mohrii
APSC0023666	Lawrence	Tennessee	14 Aug 2004	Dwayne Estes and John Beck 06385	APSC Silphium mohrii
APSC0023667	Lawrence	Tennessee	14 Aug 2004	Dwayne Estes and John Beck 6385	APSC Silphium mohrii
APSC0089035	Coffee	Tennessee	02 Sep 1984	M. Medley 11526-84	APSC Silphium mohrii
UOS01283	Coffee	Tennessee	17 Aug 1996	Landon E. McKinney	UOS Silphium mohrii
BRIT100263		Tennessee			VDB Silphium mohrii
BRIT97786		Tennessee			VDB Silphium mohrii
BRIT100271		Tennessee			VDB Silphium mohrii
BRIT97788		Tennessee			VDB Silphium mohrii
BRIT100260		Tennessee			VDB Silphium mohrii
BRIT100273		Tennessee			VDB Silphium mohrii
BRIT97784		Tennessee			VDB Silphium mohrii
31234100288271	Coffee	Tennessee	12 Oct 1991	Ronald L. Jones 6998	EKY Silphium mohrii
TENN-V-0226933	Lincoln	Tennessee			TENN Silphium mohrii
TENN-V-0226918	Coffee	Tennessee			TENN Silphium mohrii
TENN-V-0226919	Coffee	Tennessee			TENN Silphium mohrii
TENN-V-0226924	Cumberland	Tennessee			TENN Silphium mohrii
TENN-V-0226934	Marion	Tennessee			TENN Silphium mohrii
TENN-V-0226928	Giles	Tennessee			TENN Silphium mohrii
TENN-V-0226939	Warren	Tennessee			TENN Silphium mohrii
APSC0023668	Lawrence	Tennessee	14 Aug 2004	Dwayne Estes and John Beck 6385	APSC Silphium mohrii
APSC0023665	Lawrence	Tennessee	14 Aug 2004	Dwayne Estes and John Beck 6385	APSC Silphium mohrii
N/A	Coffee	Tennessee	17 Aug 1996	Landon E. McKinney	UOS Silphium mohrii
BRIT97785		Tennessee			VDB Silphium mohrii
BRIT100270		Tennessee			VDB Silphium mohrii
BRIT100269		Tennessee			VDB Silphium mohrii
BRIT100262		Tennessee			VDB Silphium mohrii
31234100288263	Coffee	Tennessee	30 Aug 1991	Ronald L. Jones 6927	EKY Silphium mohrii
TENN-V-0226931	Lincoln	Tennessee			TENN Silphium mohrii
TENN-V-0226916	Coffee	Tennessee			TENN Silphium mohrii
TENN-V-0226929	Grundy	Tennessee			TENN Silphium mohrii
APSC0023663	Giles	Tennessee	21 Sep 2000	Dwayne Estes 00921	APSC Silphium mohrii
APSC0117412	Coffee	Tennessee			APSC Silphium mohrii
BRIT97782		Tennessee			VDB Silphium mohrii
TENN-V-0226923	Coffee	Tennessee			TENN Silphium mohrii
TENN-V-0226938	Maury	Tennessee			TENN Silphium mohrii
TENN-V-0226917	Coffee	Tennessee			TENN Silphium mohrii
BRIT100259		Tennessee			VDB Silphium mohrii
BRIT100265		Tennessee			VDB Silphium mohrii
BRIT97780		Tennessee			VDB Silphium mohrii
BRIT97781		Tennessee			VDB Silphium mohrii
BRIT100272		Tennessee			VDB Silphium mohrii
BRIT100268		Tennessee			VDB Silphium mohrii
TENN-V-0226927	Giles	Tennessee			TENN Silphium mohrii
APSC0089037	Coffee	Tennessee	Not shown-Not shown-Not shown	11526-84	APSC Silphium mohrii
APSC0040694	Marion	Tennessee	13 Aug 2010	E. Blyveis 489	APSC Silphium mohrii
BRIT100258		Tennessee			VDB Silphium mohrii
BRIT100257		Tennessee			VDB Silphium mohrii
BRIT100274		Tennessee			VDB Silphium mohrii
TENN-V-0226930	Lawrence	Tennessee			TENN Silphium mohrii
TENN-V-0226921	Coffee	Tennessee			TENN Silphium mohrii
TENN-V-0226936	Maury	Tennessee			TENN Silphium mohrii
APSC0023664	Lincoln	Tennessee	25 Oct 2002	Dwayne Estes 04290	APSC Silphium mohrii
BRIT97779		Tennessee			VDB Silphium mohrii
BRIT100266		Tennessee			VDB Silphium mohrii
BRIT97787		Tennessee			VDB Silphium mohrii
BRIT100261		Tennessee			VDB Silphium mohrii
BRIT100275		Tennessee			VDB Silphium mohrii
TENN-V-0226932	Lincoln	Tennessee			TENN Silphium mohrii
TENN-V-0226926	Giles	Tennessee			TENN Silphium mohrii
APSC0089036	Coffee	Tennessee	Not shown-Not shown-Not shown	Max Medley 1526-84	APSC Silphium mohrii
MTSU022274	Cumberland	Tennessee	1996-8	Landon E. McKinney	MTSU Silphium mohrii
BRIT97789		Tennessee			VDB Silphium mohrii
TENN-V-0226922	Coffee	Tennessee			TENN Silphium mohrii
TENN-V-0226920	Coffee	Tennessee			TENN Silphium mohrii
TENN-V-0226925	Franklin	Tennessee			TENN Silphium mohrii
APSC0117411	Warren	Tennessee			APSC Silphium mohrii
BRIT100267		Tennessee			VDB Silphium mohrii
BRIT100264		Tennessee			VDB Silphium mohrii
BRIT97783		Tennessee			VDB Silphium mohrii
BRIT100256		Tennessee			VDB Silphium mohrii

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Silphium mohrii

Related Links

Species Distribution Map

Ecoregions

Synonyms

Specimens and Distribution

Plant Photos