Hypericum gentianoides
| Hypericum gentianoides | |
|---|---|
| File:Pineweed (Orange grass) (5750568407).jpg | |
| Scientific classification Edit this classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Malpighiales |
| Family: | Hypericaceae |
| Genus: | Hypericum |
| Section: | H. sect. Brathys |
| Species: | H. gentianoides
|
| Binomial name | |
| Hypericum gentianoides | |
| Synonyms | |
|
Sarothra gentianoides L. | |
_(5750568407).jpg){kind=link}
Hypericum gentianoides is a species of flowering plant in the St. John's wort family Hypericaceae. Its common names include orangegrass and pineweed.
Native to eastern North America, it ranges from Ontario; Nova Scotia and Maine south to Florida, west to Texas, and north to Missouri and Minnesota.[1][2] It has been observed growing in habitats such as fields, flatwoods, and rock outcrops.[3]
It is an annual herb typically growing 10–40 cm (4–16 in) tall. The leaves are repressed against the stem, 1–3 mm long, and scale-like; an adaptation to reduce transpiration in exposed environments.[4] The flowers are no more than 3 mm across, with five to ten stamens, and three styles.[5][6] It commonly grows in nutrient poor soil, sand, and on exposed sites, but is also known to occur in wetter areas such as coastal plain marshes.[6] The name orangegrass refers to the citrus smell that is released when it is crushed.[7] Chemical extracts of H. gentianoides have been found to inhibit the contraction of HIV.[8]
References
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- ^ Weakley, A.S. 2020. Flora of the Southeastern United States. Edition of 20 October 2020. University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
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