Bartonia paniculata (Michaux) Muhlenberg ssp. paniculata . Common name: Screwstem Bartonia. Phenology: Aug-Oct; Sep-Oct. Habitat: Swamps, bogs, pocosins, pocosin ecotones, sphagnous seepages, sinkhole ponds. Distribution: Ssp. paniculata ranges from MA south to c. peninsular FL and west to e. TX, chiefly on the Coastal Plain, but with scattered occurrences inland, to c. VA, e. WV (Vanderhorst et al. 2013), w. NC, KY, and AR.
Origin/Endemic status: Native
Synonymy ⓘ: = Ar, FNA14, K4, Mo3, Va, Drake (2011), Gillett (1959), Mathews et al (2009); Centaurella paniculata Michx. = Bartonia paniculata (Michx.) Muhl. — G, NE, Correll (1966); = Bartonia paniculata (Michx.) Muhl. var. paniculata — C, F; >< Bartonia lanceolata Small — S; < Bartonia paniculata (Michx.) Muhl. — Fl5, GW2, Il, Mi, Pa, RAB, Tat, Tn, Tx, WH3; < Bartonia paniculata (Michx.) Muhl. ssp. paniculata — NY. Basionym: Centaurella paniculata Michx. 1803
Links to other floras: = Bartonia paniculata ssp. paniculata - FNA14
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Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: OBL (taxonomic split from wetland indicator species)
- Eastern Mountains and Piedmont: OBL (name change)
- Great Plains: OBL (taxonomic split from wetland indicator species)
- Midwest: OBL (taxonomic split from wetland indicator species)
- Northcentral & Northeast: OBL (taxonomic split from wetland indicator species)
Heliophily ⓘ: 5
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© Erik Danielson source | Original Image ⭷
© Alan Cressler: Bartonia paniculata subsp. paniculata, Taylor County, Georgia 1 by Alan Cressler source | Original Image ⭷
© Bruce A. Sorrie | Original Image ⭷
© Bruce A. Sorrie | Original Image ⭷
© Erik Danielson source | Original Image ⭷
© Floyd A. Griffith | Original Image ⭷Feedback
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Horticultural Information
Intro: Erect or sprawling, slender annual of swamps, bogs, pocosins, pocosin ecotones, sphagnous seepages and sinkhole ponds.
Stems: Stems smooth, twisted, and tinted with purple; sometimes twining or sprawling on other plants.
Leaves: Leaves, mostly alternate, are scale-like and greenish-purple.
Inforescence: Inflorescence is a sparse, narrow panicle.
Flowers: Tiny 4-petalled, green to creamy white flowers (occasionally tinted pink) are borne individually on stalks of the panicle; petals are lanceolate and acute to long acuminate and often remain closed.
Fruits: Fruit a tiny, oval capsule.
Comments: Bartonia species are believed to be at least partly dependent on a fungal association (mycorrhizae) in the soil.
Height: 4-16 in.
plant sale text:
bloom table text:
description: Erect or sprawling, slender annual of swamps, bogs, pocosins, pocosin ecotones, sphagnous seepages and sinkhole ponds.
stems: Stems smooth, twisted, and tinted with purple; sometimes twining or sprawling on other plants.
leaves: Leaves, mostly alternate, are scale-like and greenish-purple.
inflorescence: Inflorescence is a sparse, narrow panicle.
flowers: Tiny 4-petalled, green to creamy white flowers (occasionally tinted pink) are borne individually on stalks of the panicle; petals are lanceolate and acute to long acuminate and often remain closed.
fruits: Fruit a tiny, oval capsule.
comments: Bartonia species are believed to be at least partly dependent on a fungal association (mycorrhizae) in the soil.
cultural notes:
germination code:
native range:
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