Hieracium paniculatum (Panicled hawkweed)

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Hieracium paniculatum L.

Panicled hawkweed

Kingdom	Plantae	Plants, but not fungi, lichens, or algae
Subkingdom	Tracheobionta	Vascular plants—plants with a “circulatory system” for delivering water and nutrients
Division	Magnoliophyta	Flowering plants, also known as angiosperms
Class	Magnoliopsida	Dicotyledons—plants with two initial seed leaves
Subclass	Asteridae	A large class that encompasses asters
Order	Asterales	Flowering plants with a central disk flower and surrounding petals, like daisies
Family	Asteraceae	The aster family, which also includes daisies and sunflowers; from the Greek ἀστήρ, “star,” for the star-shaped flowers
Genus	Hieracium	From Greek hierakion, “a hawk,” from Pliny’s belief that hawks strengthened their eyesight by eating these plants
Species	paniculatum	With flowers in panicles

About plant names...

Panicled hawkweed is a native of eastern North America.

Identification: From a base on the ground that survives the winter, this hawkweed produces stems up to 3′ (1 m) high, with sparse leaves and hairs on the lower stem and leaves that are ⅛-⅜″ (3-10 mm) long. Leaves are narrow, with irregularly toothed margins and whitish undersides. The top portion of the plant branches in a delicate tracery of sinuous, hairless, thin-branched flowering heads. Each of the dozens of flowers are less than ½″ (1.5 cm) in length, with fewer than 20 florets.

This hawkweed comparison table is an aid to identifying hawkweeds and similar-appearing species.

Online References:

Southeastern Flora, the Southeastern U.S. Plant Identification Resource

Delaware Wildflowers

Www.jeffpippen.com

The Lady Bird Johnson Wildflower Center

The Michigan Natural Features Inventory

EFloras

8/17/2020 · Otter Brook Preserve, Harpswell, Maine · ≈ 8 × 5″ (20 × 13 cm)

8/12/2023 · Highlands Trail via Pismire Bluffs Trail, Raymond Community Forest, Raymond, Maine · ≈ 12 × 8″ (31 × 20 cm)

7/23/2017 · Pine Grove Furnace State Park, Pennsylvania · ≈ 6 × 4″ (16 × 11 cm)

8/2/2012 · Nashua River Rail Trail, near Nashoba Hospital, Ayer, Massachusetts · ≈ 9 × 6″ (22 × 14 cm)

8/21/2013 · Estuary Trail, Shipley Swamp, Westford, Massachusetts · ≈ 7 × 4½″ (18 × 12 cm)

8/4/2009 · Near Nashoba Hospital, Ayer, Massachusetts · ≈ 1 × 2′ (39 × 59 cm)

6/18/2015 · Tom and Susan’s, Pepperell, Massachusetts · ≈ 10 × 7″ (25 × 16 cm)

8/21/2013 · Estuary Trail, Shipley Swamp, Westford, Massachusetts · ≈ 9 × 6″ (22 × 15 cm)

7/23/2017 · Pine Grove Furnace State Park, Pennsylvania · ≈ 6 × 4″ (16 × 11 cm)

6/18/2015 · Tom and Susan’s, Pepperell, Massachusetts · ≈ 9 × 6″ (23 × 16 cm)

7/20/2013 · Nashua River Rail Trail, East Pepperell, East Pepperell, Massachusetts · ≈ 11 × 7″ (28 × 18 cm)

6/18/2015 · Tom and Susan’s, Pepperell, Massachusetts · ≈ 9 × 6″ (23 × 16 cm)

8/2/2012 · Nashua River Rail Trail, near Nashoba Hospital, Ayer, Massachusetts · ≈ 15 × 10″ (39 × 26 cm)

Hieracium paniculatum description by Thomas H. Kent, last updated 19 Aug 2023.

7/18/2010 · Great Brook Farm State Park, Carlisle, Massachusetts · ≈ 14 × 9″ (35 × 23 cm) ID is uncertain

6/18/2015 · Tom and Susan’s, Pepperell, Massachusetts · ≈ 9 × 6″ (23 × 16 cm)

7/20/2013 · Nashua River Rail Trail, East Pepperell, East Pepperell, Massachusetts · ≈ 7 × 11″ (18 × 28 cm)

8/21/2013 · Estuary Trail, Shipley Swamp, Westford, Massachusetts · ≈ 8 × 5″ (19 × 12 cm)

7/20/2013 · Nashua River Rail Trail, East Pepperell, East Pepperell, Massachusetts · ≈ 9 × 6″ (22 × 15 cm)

7/23/2017 · Pine Grove Furnace State Park, Pennsylvania · ≈ 6 × 4″ (15 × 10 cm)

6/18/2015 · Tom and Susan’s, Pepperell, Massachusetts · ≈ 10 × 7″ (25 × 16 cm)

7/18/2010 · Great Brook Farm State Park, Carlisle, Massachusetts · ≈ 11 × 7″ (27 × 18 cm) ID is uncertain

8/12/2023 · Highlands Trail via Pismire Bluffs Trail, Raymond Community Forest, Raymond, Maine · ≈ 8 × 5″ (20 × 13 cm)

8/17/2020 · Otter Brook Preserve, Harpswell, Maine · ≈ 10 × 6″ (24 × 16 cm)

8/2/2012 · Nashua River Rail Trail, near Nashoba Hospital, Ayer, Massachusetts · ≈ 11 × 7″ (27 × 18 cm)

8/21/2013 · Estuary Trail, Shipley Swamp, Westford, Massachusetts · ≈ 8 × 5″ (19 × 12 cm)

7/18/2010 · Great Brook Farm State Park, Carlisle, Massachusetts · ≈ 14 × 9″ (35 × 23 cm) ID is uncertain

8/21/2013 · Estuary Trail, Shipley Swamp, Westford, Massachusetts · ≈ 7 × 4½″ (18 × 12 cm)

Range:

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