Carduus vulgaris Savi
Cirsium lanceolatum (L.) Scop., non Hill
Cirsium lanceolatum (L.) Scop. var. hypoleucum DC.
Cirsium vulgare (Savi) Ten.
Bull thistle
[An article has not been written yet.]
7/31/2016 · Skyline Drive, Shenandoah National Park, Virginia 
8/12/2017 · Bates Land and Blackman Land, Groton Conservation Trust, Groton, Massachusetts · ≈ 4½ × 6″ (12 × 15 cm) 
7/31/2016 · Skyline Drive, Shenandoah National Park, Virginia 
8/12/2017 · Bates Land and Blackman Land, Groton Conservation Trust, Groton, Massachusetts · ≈ 3½ × 4″ (8.7 × 9.9 cm) 
7/19/2017 · Monongahela National Forest, Monongahela, West Virginia · ≈ 5 × 8″ (13 × 20 cm)
ID is uncertain 
8/12/2017 · Bates Land and Blackman Land, Groton Conservation Trust, Groton, Massachusetts · ≈ 6 × 4″ (14 × 11 cm) 
7/19/2017 · Monongahela National Forest, Monongahela, West Virginia · ≈ 4½ × 7″ (12 × 18 cm)
ID is uncertain 
7/19/2017 · Monongahela National Forest, Monongahela, West Virginia · ≈ 6 × 4″ (15 × 10 cm)
ID is uncertain 
7/27/2016 · Michaux State Forest, Caledonia State Park, Fayetteville, Pennsylvania · ≈ 6 × 4″ (16 × 11 cm) 
9/3/2009 · Nashua River Rail Trail, Ayer, Massachusetts · ≈ 4 × 5″ (10 × 12 cm) 
7/27/2016 · Michaux State Forest, Caledonia State Park, Fayetteville, Pennsylvania · ≈ 9 × 14″ (23 × 35 cm) 
8/12/2017 · Bates Land and Blackman Land, Groton Conservation Trust, Groton, Massachusetts · ≈ 3½ × 5″ (8.7 × 13 cm) 
7/19/2017 · Monongahela National Forest, Monongahela, West Virginia · ≈ 8 × 5″ (20 × 13 cm)
ID is uncertain 
7/31/2016 · Skyline Drive, Shenandoah National Park, Virginia 
7/27/2016 · Michaux State Forest, Caledonia State Park, Fayetteville, Pennsylvania · ≈ 4½ × 3½″ (12 × 9.8 cm) 
8/12/2017 · Bates Land and Blackman Land, Groton Conservation Trust, Groton, Massachusetts · ≈ 4 × 6″ (10 × 14 cm) 
7/31/2016 · Skyline Drive, Shenandoah National Park, Virginia 
9/3/2009 · Nashua River Rail Trail, Ayer, Massachusetts · ≈ 5 × 7″ (13 × 17 cm) 
7/27/2016 · Michaux State Forest, Caledonia State Park, Fayetteville, Pennsylvania · ≈ 4 × 3″ (10 × 8.2 cm) 
7/19/2017 · Monongahela National Forest, Monongahela, West Virginia · ≈ 5 × 8″ (13 × 20 cm)
ID is uncertain 
7/27/2016 · Michaux State Forest, Caledonia State Park, Fayetteville, Pennsylvania · ≈ 3½ × 5″ (9.6 × 12 cm) 
| Kingdom | Plantae | Plants, but not fungi, lichens, or algae (from Stearn's Botanical Latin) |
| 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 | Cirsium | From Greek kirsion, “a kind of thistle” |
| Species | vulgare | Latin for “common” |
Cirsium vulgare description by Thomas H. Kent, not updated.
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