Heracleum maximum

Classification	Dicots
Family	Apiaceae
Family (Traditional)	Apiaceae
Genus	Heracleum
Species:	Heracleum maximum W. Bartram
Common Name	Cowparsnip
Growth Habit	forb
Plant Notes	**
Characteristics	Armaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Natural Area Presence: GRSM; Duration: Perennial; General Ecology: Terrestrial; Growth Habit: forb; 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; Reproductive Phenology: July; Reproductive Phenology: August; Leaf Arrangement: alternate; Leaf Complexity: compound; Leaf Dissection: 1; Leaf Dissection: 1.5; Leaf Persistance: Deciduous; Leaf Petiole Type: petiolate; Leaf Type: broadleaf; Leaf Venation: pinnate; Leaflet Margins: lobed; Leaflet Number: 0; Leaflet Number: 3; Leaflet Number: 5; Base Flower Color: White; Carpel Number/Pistil: 2; Fruit Dehiscence: No; Fruit Type: Schizocarp; Fruit Wet/Dry: Dry; Hypanthium Present: No; Inflorescence Position: terminal; Inflorescence Types: corymb/cyme/umbel; Ovary Position: Inferior; Overall Flower Symmetry: Actinomorphic; Ovules per Carpel: 2; Perianth Present: Yes; Petal Fusion: No; Petal Number: 5; Pistil Complexity: Compound; Pistil Number: 1; Placentation Type: Axillary; Sepal Fusion: No; Sepal Number: 0; Sepal Number: 5; Sexuality: monoclinous; Sporangium Arrangement: N/A; Stamen Number: 5; Tepal Fusion: N/A; Tepal Number: N/A
C value	4
Status	Native; AGCP (FAC), EMP (FAC) (NWPL); TN[S2] KY[SH] (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

Synonym	Full Citation
Heracleum lanatum	Heracleum lanatum Michx.
Heracleum sphondylium subsp. montanum	Heracleum sphondylium subsp. montanum (Schleich. ex Gaudin) Briq.
Heracleum sphondylium var. lanatum	Heracleum sphondylium var. lanatum (Michx.) Dorn

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: Harlan (KY), Lewis (KY), Carter (TN), Cocke (TN), Greene (TN), Polk (TN), Putnam (TN), Stewart (TN), Unicoi (TN), Washington (TN)

Herbaria represented by specimen data listed below: APSC, BEREA, ETSU, HTTU, TENN, VDB

Range of years during which specimens were collected: 1996 - 2018

Accession No. (click for full details)	County	State	Coll. Date	Collector & Collection No.	Herbarium & Herbarium Name Used
TENN-V-0163423	Unicoi	Tennessee			TENN Heracleum maximum
APSC0062414	Harlan	Kentucky			APSC Heracleum maximum
ETSU033943	Carter	Tennessee			ETSU Heracleum maximum
ETSU007895	Carter	Tennessee			ETSU Heracleum lanatum
TENN-V-0163418	Cocke	Tennessee			TENN Heracleum maximum
TENN-V-0163416	Washington	Tennessee			TENN Heracleum lanatum
APSC0029774	Stewart	Tennessee			APSC Heracleum maximum
BRIT533650	Unicoi	Tennessee	12 Jul 1996	TN Heritage Program s.n.	VDB Heracleum maximum
ETSU032110	Unicoi	Tennessee		James T Donaldson	ETSU Heracleum lanatum
APSC0052583	Unicoi	Tennessee			APSC Heracleum maximum
BRIT533649	Unicoi	Tennessee	12 Jul 1996	TN Heritage Program s.n.	VDB Heracleum maximum
TENN-V-0163422	Polk	Tennessee			TENN Heracleum maximum
TENN-V-0163421	Polk	Tennessee			TENN Heracleum maximum
ETSU033944	Carter	Tennessee			ETSU Heracleum maximum
TENN-V-0163420	Polk	Tennessee			TENN Heracleum maximum
TENN-V-0163415	Unicoi	Tennessee			TENN Heracleum lanatum
APSC0052584	Unicoi	Tennessee			APSC Heracleum maximum
APSC0029773	Stewart	Tennessee			APSC Heracleum maximum
TENN-V-0163414	Greene	Tennessee			TENN Heracleum lanatum
TENN-V-0163417	Washington	Tennessee			TENN Heracleum lanatum
HTTU001681	Putnam	Tennessee			HTTU Heracleum lanatum
BEREA001838	Lewis	Kentucky			BEREA Heracleum lanatum
BEREA001837	Lewis	Kentucky			BEREA Heracleum lanatum
BEREA001839	Lewis	Kentucky			BEREA Heracleum lanatum
TENN-V-0163419	Polk	Tennessee			TENN Heracleum maximum
BRIT70283	Polk	Tennessee			VDB Heracleum lanatum
N/A		Tennessee	13 Jun 2018	Frosty Levy, Elaine Walker, Sollie Walker 18127	ETSU Heracleum maximum

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Heracleum maximum

Related Links

Species Distribution Map

Ecoregions

Synonyms

Specimens and Distribution

Plant Photos