Hypericum punctatum

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spotted St. John's-wort [1]

Hypericum punctatum
Hypericum punctatum SEF.jpg
Photo by the Southeastern Flora Plant Database
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicots
Order: Theales
Family: Clusiaceae
Genus: Hypericum
Species: H. punctatum
Binomial name
Hypericum punctatum
Lam.
HYPE PUNT DIST.JPG
Natural range of Hypericum punctatum from USDA NRCS Plants Database.

Taxonomic Notes

Synonyms: Hypericum punctatum Lamarck var. punctatum; Hypericum subpetiolatum E.P. Bicknell ex Small

Description

H. punctatum is a perennial forb/herb of the Clusiaceae family native to North America. [1]

Distribution

H. punctatum is found throughout the eastern United States and up into Eastern Canada, specifically Ontario and Quebec. [1]

Ecology

Habitat

H. punctatum has a low tolerance for drought. It is tolerant of shade. [1] It is commonly found in fields and woodland borders.[2] This species also prefers partial shade, and has a low tolerance for calcium carbonate.[3] Specimens of H. punctatum have been collected from upland pinelands that are annually burned, and other similar sandhill habitats that are well-drained.[4] It has also been recorded in outcrop oak hickory forests.[5]

Phenology

Flowers bloom in the early summer months.[1] It commonly flowers between June and September.[2]

Seed dispersal

This species is thought to be dispersed by gravity. [6]

Fire ecology

H. punctatum is not a fire resistant forb but has a mild tolerance to fire. [1]

Pollination

This species is considered by pollination ecologists to be of special value to bumble bees since the flowers attract such large numbers for pollination.[3]

Use by animals

It has been recorded to be eaten by white-tailed deer.[7]

Conservation and Management

It is considered vulnerable in the Canadian province Quebec, critically imperiled in Nebraska, and an exotic species in the Canadian province Newfoundland.[8]

Cultivation and restoration

Photo Gallery

References and notes

  1. 1.0 1.1 1.2 1.3 1.4 1.5 USDA Plant Database
  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 [[1]] Lady Bird Johnson Wildflower Center. Accessed: May 28, 2019
  4. Florida State University Robert K. Godfrey Herbarium database. URL: http://herbarium.bio.fsu.edu. Last accessed: May 2019. Collectors: Wilson Baker, Robert K. Godfrey, Jeffrey M. Kane, Roy Komarek, and R. A. Norris. States and Counties: Florida: Leon. Georgia: Thomas.
  5. Bostick, P. E. (1971). "Vascular Plants of Panola Mountian, Georgia " Castanea 46(3): 194-209.
  6. 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.
  7. Atwood, E. L. (1941). "White-tailed deer foods of the United States." The Journal of Wildlife Management 5(3): 314-332.
  8. [[2]] NatureServe Explorer. Accessed: May 28, 2019