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Rydberg's thistle
Scientific Name: Cirsium rydbergii
Family: Asteraceae
Category: Dicot
Growth: Forb/herb
Duration: Perennial
Other Names:
Rydberg's Thistle (Cirsium rydbergii)
Cirsium rydbergii, commonly known as Rydberg's thistle or alcove thistle, is a perennial herb belonging to the sunflower family (Asteraceae).
Considerations for Pets
- As a thistle, Cirsium rydbergii may have prickly or thorny characteristics.
Taxonomy and Nomenclature
- Scientific Name: Cirsium rydbergii Petr.
- Common Names: Rydberg's thistle, alcove thistle
- Family: Asteraceae (Sunflower family)
- Synonym: Cirsium lactucinum Rydberg
- Rank: Species
Distribution and Habitat
- Rydberg's thistle is a North American species.
- It is found in the Colorado Plateau region.
Morphological Characteristics
- Cirsium rydbergii is a perennial herb.
- The leaves are deciduous.
Related Species
- The text mentions other Cirsium species, including:
- Cirsium neomexicanum (New Mexico thistle)
- Cirsium vulgare (Bull thistle, common thistle, or spear thistle)
- Cirsium rusbyi (Rusby's thistle)
- Cirsium flodmanii (Flodman's thistle, prairie thistle)
- Cirsium barnebyi (Barneby's thistle)
- Cirsium cymosum (Peregrine thistle)
- Cirsium acarna (Soldier thistle)
- Cirsium acaule (Stemless thistle, dwarf thistle)
- Cirsium scabrum (Rough thistle)