Hypericum tubulosum
| Hypericum tubulosum | |
|---|---|
| |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Malpighiales |
| Family: | Hypericaceae |
| Genus: | Hypericum |
| Species: | H. tubulosum
|
| Binomial name | |
| Hypericum tubulosum Walter
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| Synonyms[1] | |
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Hypericum tubulosum, the lesser marsh St. Johnswort or southern marsh St. John's-wort, is a species of flowering plant in the family Hypericaceae.[2][3] Formerly classified as synonym Triadenum tubulosum,[1] the species is found across the Southern United States and Midwest.[3] It grows in wetlands such as bogs and floodplains.[2][4]
Description
[edit]
Lesser marsh St. Johnswort is a perennial herb that grows to approximately 32 inches (81 cm) tall. Its pink flowers bloom in August and September.[4]
The seeds of H. tubulosum closely resemble those of the extinct paleospecies Hypericum tertiaerum.[5]
References
[edit]- ^ a b "Hypericum tubulosum Walter". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2020-10-01.
- ^ a b Weakley, Alan S. (2018), Flora of the Southern and Mid-Atlantic States, working draft of 20 August 2018, University of North Carolina Herbarium, North Carolina Botanical Garden, University of North Carolina at Chapel Hill
- ^ a b "Plants Profile for Triadenum tubulosum (lesser marsh St. Johnswort)". plants.usda.gov. Retrieved 2020-09-30.
- ^ a b "Lady Bird Johnson Wildflower Center - The University of Texas at Austin". www.wildflower.org. Retrieved 2020-09-30.
- ^ Meseguer, Andrea S.; Sanmartín, Isabel (30 June 2012). "Paleobiology of the genus Hypericum (Hypericaceae): a survey of the fossil record and its palaeogeographic implications". Anales del Jardín Botánico de Madrid. 69 (1): 97–106. doi:10.3989/ajbm.2306. hdl:10261/167029. ISSN 1988-3196.
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