Hypericum gentianoides

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Common name: orangegrass [1], pineweed [2]

Hypericum gentianoides
Hypericum gentianoides GB.jpg
Photo by Marilee Lovit at the GoBotany Database
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicots
Order: Theales
Family: Clusiaceae
Genus: Hypericum gentianoides
Species: H. gentianoides
Binomial name
Hypericum gentianoides
Natural range of Hypericum gentianoides from USDA NRCS Plants Database.

Taxonomic Notes

Synonyms: Sarothra gentianoides Linnaeus

Varieties: none


H. gentianoides is an annual forb/herb of the Clusiaceae family native to North America and Canada. [1]


H. gentianoides is found in the eastern half of the United States, as well as the Ontario region of Canada. [1]



H. gentianoides proliferates in fields, rock outcrops, woodland borders, eroding areas, pond margins, and flatwoods. [2] Specimens have been collected from loamy loose sand, wet pine flatwoods, longleaf pine depression, and sandhills. [3]


H. gentianoides has been observed flowering in May through July and September. [4]

Seed dispersal

This species is thought to be dispersed by gravity. [5]

Fire ecology

H. gentianoides is not fire resistant, and has no fire tolerance. [1]

Conservation and Management

H. gentianoides is listed as endangered by the Iowa Department of Natural Resources Parks, Recreation, and Preserves Division. [1]

Cultivation and restoration

Photo Gallery

References and notes

  1. 1.0 1.1 1.2 1.3 1.4 USDA Plant Database https://plants.usda.gov/core/profile?symbol=HYGE
  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. URL: http://herbarium.bio.fsu.edu. Last accessed: June 2018. Collectors: Loran C. Anderson, Leon Neel, Andre Clewell, R.F. Doren, R.K. Godfrey, Cecil Slaughter, Wilson Baker, Ann Johnson, John Nelson, Keith Bradley. States and counties: South Carolina (Dillon) Florida (Bay, Flagler, Duval, Leon, Wakulla, Franklin) Georgia (Baker, Thomas)
  4. Nelson, G. PanFlora: Plant data for the eastern United States with emphasis on the Southeastern Coastal Plains, Florida, and the Florida Panhandle. www.gilnelson.com/PanFlora/ Accessed: 22 MAY 2018
  5. Kirkman, L. Katherine. Unpublished database of seed dispersal mode of plants found in Coastal Plain longleaf pine-grasslands of the Jones Ecological Research Center, Georgia.