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Apiaceae
Ptilimnium

not marked as a favorite taxon Ptilimnium costatum (Elliott) Rafinesque. Common name: Big Bishopweed. Phenology: Jun-Oct; mid Jul-Oct. Habitat: Tidal freshwater marshes, wet prairies, bottomland hardwood forests. Distribution: Se. North Carolina south to Georgia, and west to Illinois, Missouri, and Arkansas (material from Louisiana and Texas is of P. texense); it is rare and disjunct through much of that range. Reported for Georgetown County, South Carolina (Bradley et al. [in prep.]).

Glossary (beta!)

ID notes: Ptilimnium costatum has the potential to be a great deal larger and coarser than any other member of the genus, but individuals will be encountered no larger than a fairly robust plant of P. ahlesii or P. capillaceum.

Origin/Endemic status: Endemic

Synonymy ⓘ: = Ar, C, F, FNA13, G, GW2, Il, K1, MC, Mo2, NS, Ok, POWO, RAB, S, Tn, Easterly (1957), Feist (2010), Feist et al (2012), Weakley & Nesom (2004); < Ptilimnium costatum (Elliott) Raf. — K4, NSProv. Basionym: Ammi costatum Elliott 1817

Links to other floras: = Ptilimnium costatum - FNA13

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FACW (taxonomic split from wetland indicator species)
  • Eastern Mountains and Piedmont: FACW
  • Great Plains: OBL (taxonomic split from wetland indicator species)
  • Midwest: OBL (taxonomic split from wetland indicator species)

Heliophily ⓘ: 8

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image #1 of Ptilimnium costatum© Joey Shaw source | Original Image ⭷
image #2 of Ptilimnium costatum© Joey Shaw source | Original Image ⭷

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Horticultural Information

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