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Heracleum maximum W. Bartram Cow parsnip, Indian celery, pushki, common cowparsnip Similar species | |||
Heracleum mantegazzianum |
You are here Heracleum maximum |
Daucus carota |
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| Plant | Extremely large: 6½–16′ (2–5 m) tall, sometimes reaching 23′ (7 m). Poisonous  : causes phytophotodermatitis. Hollow stems are 1–4″ (3–10 cm) in diameter, with deep purple raised blotches containing white hairs. |
Up to 6½′ (2 m) in height. Poisonous : causes phytophotodermatitis. Stems are thick, grooved, hollow, hairy, and often reddish. |
Grows to 3' in height. Plant smells like carrots. There are fine hairs on stems and leaves. |
| Leaves | Leaves are up to 5′ (1.5 m) across, extensively divided into sharp-tipped sections. | Up to 1′ (40 cm) across, split into sharp lobes that vaguely resemble maple leaves, with a disagreeable odor. | Compound leaves are deeply divided and subdivided. |
| Flowers | White flowers form flat-topped compound umbels (flowerheads) up to 2½′ (76 cm) in diameter. | Large white compound umbels about 8″ (20 cm) in size. Individual flowers have five petals of inconsistent size. | Pale pink before opening. When open, forms an umbrella-shaped flower cluster up to 3" across, composed of tiny 5-petaled flowers. |
| Fruit | Each seed is up to ¼″ (8.3 mm) long. | Flat, green, egg- or heart-shaped, ⅜–½″ (9.5–12 mm) × ¼–⅜″ (6.3–9.5 mm). | Small, dry, bumpy, oval and flattened, with short styles and hooked spines, as well as protective enveloping hairs. |
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| Habitats | Rich, moist soils in ditches, stream banks, vacant farmland, and fence and tree lines | Moist, shady mountain woodlands, streambeds | Very common along roadsides, or in fields. |
Heracleum maximum description by Thomas H. Kent, not updated.
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