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Bull Thistle
(Cirsium vulgare (Savi) Tenore)
| Growth Habit: Biennial,
erect, many spreading branches. Rosette formed first year, flowering stem elongates second
year. |
| Leaves: Green, sparsely
hairy, with short appressed prickles on the surface, cottony below. Sharp spines on the
margins. |
| Stems: Stout, 2 ft. to 5
ft. tall with spiny wings from leaves. |
| Flower: Terminal, more
or less clustered, 1 1/2 to 2 inches wide, flowers dark purple, bracts spine tipped. |
| Roots: Short, fleshy
taproot. |
| Seeds: Straw colored,
striped lengthwise with brown or black, a protrusion at one end. |
| Other: Reproduce by seed
only. |
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