Cirsium virginianum

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Common names: Virginia thistle

Cirsium virginianum
Cirsium virginianum SEF.jpg
Photo by the Southeastern Flora Plant Database
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicots
Order: Asterales
Family: Asteraceae
Genus: Cirsium
Species: C. virginianum
Binomial name
Cirsium virginianum
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CIRS VIRG DIST.JPG
Natural range of Cirsium virginianum from USDA NRCS Plants Database.

Taxonomic Notes

Synonyms: Carduus virginianus Linnaeus, Cirsium revolutum (Small) Petrak

Varieties: none

Description

C. virginianum is a biennial forb in the Asteraceae family native to the southeast United States [1].

Distribution

C. virginianum can be found along the southeast United States, ranging from Texas to New Jersey. However, it is mostly found in the Carolinas [1].

Ecology

Habitat

C. virginianum can be found in moist to fairly dry pine savannas and bogs [2]. The species has been observed in to grow in disturbed areas. [3].

Associated Species - Hyptis alata, Myrica cerifera var. cerifera, Iva microcephala, Tridens ambiguus, Serenoa repens, Rudbeckia nitida, Galium aparine, Vicia angustifolia, Geranium carolinianum, and Trifolium campestre [3].

Phenology

C. virginianum typically flowers from August to October [2], but has been observed to flower as early as April [3].

Fire ecology

The species has been observed in to grow in areas that are burned annually [3].

Conservation and Management

Cultivation and restoration

Photo Gallery

References and notes

  1. 1.0 1.1 USDA Plants Database URL: https://plants.usda.gov/core/profile?symbol=CIVI
  2. 2.0 2.1 Weakley, A. S. (2015). Flora of the Southern and Mid-Atlantic States. Chapel Hill, NC, University of North Carolina Herbarium.
  3. 3.0 3.1 3.2 3.3 Florida State University Robert K. Godfrey Herbarium database. URL: http://herbarium.bio.fsu.edu. Last accessed: May 2018. Collectors: Robert K. Godfrey, R. Komarek, B. A. Sorrie, L. G. Chafin, L. G. Chafin, and C. Pederson. States and Counties: Georgia: Thomas and Worth. Florida: Clay and Escambia.