Eupatorium mohrii

Eupatorium mohrii
St. Joseph Peninsula State Park, Florida

Apparently Secure  (NatureServe)[1]
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Eupatorium
Species:
E. mohrii
Binomial name
Eupatorium mohrii
Synonyms[2]
  • Eupatorium recurvans Small
  • Uncasia mohrii (Greene) Greene
  • Eupatorium quinqueflorum Urb. & Ekman

Eupatorium mohrii, commonly called Mohr's thoroughwort, is a herbaceous perennial plant in the family Asteraceae native to the southeastern and south-central states of the United States, in the coastal plain from Virginia to Texas.[3] It has also been found in the Dominican Republic.[4]

Eupatorium mohrii is a perennial herb up to 100 cm (40 inches) tall and are producing tuberous rhizomes. As with other species of Eupatorium, the inflorescences contain a large number of tiny white flower heads, each with 5 disc florets but no ray florets. It forms hybrids with Eupatorium serotinum and Eupatorium rotundifolium.[3]

Distribution and habitat

Eupatorium mohrii is distributed from southeast Virginia south to South Florida and west to Texas.[5] It grows in moist areas, edges of ponds, and sandy soils,[3] as well as in moist pine savannas and other wet habitats.[5]

This species is commonly found in fire-dependent pinelands.[6] Its seeds can persist in the soil seed bank after a fire disturbance.[7]

References

  1. ^ "Eupatorium mohrii". NatureServe Explorer. NatureServe. Archived from the original on April 15, 2013. Retrieved 2010-09-12.
  2. ^ The Plant List, Eupatorium mohrii Greene
  3. ^ a b c "Eupatorium mohrii". Flora of North America.
  4. ^ Sullivan (1983). "Eupatorium mohrii, a new record for the Dominican Republic, including E. quinqueflorum, syn. nov. (Asteraceae)". Sida. 10 (1): 37โ€“40.
  5. ^ a b "Eupatorium mohrii (Mohr's Eupatorium) - FSUS". fsus.ncbg.unc.edu. Retrieved 2025-08-26.
  6. ^ Carr, Susan C.; Robertson, Kevin M.; Peet, Robert K. (2010). "A Vegetation Classification of Fire-Dependent Pinelands of Florida". Castanea. 75 (2): 153โ€“189. doi:10.2179/09-016.1. ISSN 0008-7475.
  7. ^ Kalmbacher, Rob; Cellinese, Nicoletta; Martin, Frank (2005). "SEEDS OBTAINED BY VACUUMING THE SOIL SURFACE AFTER FIRE COMPARED WITH SOIL SEEDBANK IN A FLATWOODS PLANT COMMUNITY". Native Plants Journal. 6 (3): 233โ€“241. doi:10.2979/npj.2005.6.3.233. ISSN 1522-8339.