Biology:Hypericum gentianoides
| Hypericum gentianoides | |
|---|---|
_(5750568407).jpg)
| |
Scientific 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. | |
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 is an annual herb typically growing 10–40 cm tall. The leaves are repressed against the stem, 1-3mm long, and scale-like; an adaptation to reduce transpiration in exposed environments.[3] The flowers are no more than 3mm across, with five to ten stamens, and three styles.[4][5] 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.[5] The name orangegrass refers to the citrus smell that is released when it is crushed.[6] Chemical extracts of H. gentianoides have been found to inhibit the contraction of HIV.[7]
References
- ↑ "Lady Bird Johnson Wildflower Center - the University of Texas at Austin". https://www.wildflower.org/plants/result.php?id_plant=HYGE.
- ↑ "BONAP's Map". http://bonap.net/TDC/Image/Map?taxonType=Species&taxonId=12809&locationType=County&mapType=Normal.
- ↑ Thoday, D. (1931). "The Significance of Reduction in the Size of Leaves". Journal of Ecology 19 (2): 297–303. doi:10.2307/2255823. https://www.jstor.org/stable/2255823.
- ↑ "US Wildflower - Pineweed, Orangegrass - Hypericum gentianoides". https://uswildflowers.com/detail.php?SName=Hypericum%20gentianoides.
- ↑ 5.0 5.1 "Hypericum gentianoides (L.) B.S.P.". Michigan Natural Features Inventory. https://mnfi.anr.msu.edu/abstracts/botany/Hypericum_gentianoides.pdf.
- ↑ "Hypericum gentianoides (Orange-grass St. John's-wort): Go Botany". https://gobotany.nativeplanttrust.org/species/hypericum/gentianoides/.
- ↑ "DSpace Angular Universal". https://dr.lib.iastate.edu/entities/publication/100136f8-6c4e-4b6e-a019-60d90f2fa289.
Wikidata ☰ Q5958086 entry
 |  |
