Difference between revisions of "Hypericum setosum"
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Associated species include ''Pinus palutris'' and ''Aristida stricta''.<ref name="FSU Herbarium"/> | Associated species include ''Pinus palutris'' and ''Aristida stricta''.<ref name="FSU Herbarium"/> | ||
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| + | ''Hypericum setosum'' is an indicator species for the Upper Panhandle Savannas community type as described in Carr et al. (2010).<ref>Carr, S.C., K.M. Robertson, and R.K. Peet. 2010. A vegetation classification of fire-dependent pinelands of Florida. Castanea 75:153-189.</ref> | ||
===Phenology=== <!--Timing off flowering, fruiting, seed dispersal, and environmental triggers. Cite PanFlora website if appropriate: http://www.gilnelson.com/PanFlora/ --> | ===Phenology=== <!--Timing off flowering, fruiting, seed dispersal, and environmental triggers. Cite PanFlora website if appropriate: http://www.gilnelson.com/PanFlora/ --> | ||
Revision as of 12:56, 31 July 2020
| Hypericum setosum | |
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| Photo taken by Gil Nelson | |
| Scientific classification | |
| Kingdom: | Plantae |
| Division: | Magnoliophyta - Flowering plants |
| Class: | Magnoliopsida – Dicotyledons |
| Order: | Theales |
| Family: | Clusiaceae ⁄ Guttiferae |
| Genus: | Hypericum |
| Species: | H. setosum |
| Binomial name | |
| Hypericum setosum L. | |
| |
| Natural range of Hypericum setosum from USDA NRCS Plants Database. | |
Common name: Hairy St. John's wort
Contents
Taxonomic notes
Description
Hypericum setosum is a perennial herbaceous species.
“Usually glabrous herbs or shrubs. Leaves usually punctate, simple, opposite, entire, usually sessile or subsessile, exstipulate. Inflorescence basically cymose; flowers perfect, regular, bracteates, subsessile or short-pedicellate, sepals 2, 4, or 5, persistent; petals 4 or 5, usually marcescent, yellow or pink; stamens 5-numerous, separate or connate basally forming 3-5 clusters or fascicles, filaments usually persistent; carpels 2-5, stigmas and styles separate or fused, ovary superior, 1-locular or partly or wholly 2-5 locular, placentation axile or parietal. Capsules basically ovoid, longitudinally dehiscent, styles usually persistent; seeds numerous, lustrous, areolate, cylindric or oblong. In general our species form a polymorphic complex with many intergrading taxa.” [1]
"Erect, pubescent annual or biennial, 2-7.5 dm tall, sparingly branched. Leaves ascending, elliptic lanceolate, or ovate, 1-nerved, 3-15 mm long, 2—8 mm wide, acute, base clasping, sessile. Flowers alternate or terminal, ascending branches. Sepals 5, ciliate, 3-4.5 mm long; petals 5, 4-7 mm long; stamens numerous, in clusters; stigmas capitates, styles 3 or4, separate, 1.5-2.5 mm long, ovary 1-locular. Capsules ovoid, 4-5 mm long, 2.5-3.5 mm broad seeds yellow, 0.5 mm long." [1]
Distribution
Hypericum setosum is distributed from southeastern Virginia south to central peninsular Florida, and west to southeastern Texas.[2]
Ecology
Habitat
Generally H. setosum can be found in wet pine flatwoods, pine savannas, adjacent ditches, boggy areas, scrapes, and fireplow lines.[2] It mainly occurs in moist or dry loamy sand, and seems to prefer open light conditions. It can be found in pinewoods, bordering swampy depressions, and in open wiregrass flats in longleaf pinelands. On the other hand, this species also appears in disturbed areas, including ditches and power line corridors.[3] In the southeastern gulf coastal plain, this species is listed by the USDA Natural Resources Conservation Service as a facultative wetland species that most often occurs in wetland habitats, but can also occasionally be found in non-wetland habitats as well.[4] As well, it is considered an indicator species of the upper panhandle savannas in Florida.[5]
Associated species include Pinus palutris and Aristida stricta.[3]
Hypericum setosum is an indicator species for the Upper Panhandle Savannas community type as described in Carr et al. (2010).[6]
Phenology
H. setosum generally flowers from May until September.[2] It has been observed flowering in July, August and September, while fruiting has been observed in September and October. [3][7]
Seed bank and germination
Several short-lived perennial forbs also have a seed bank persistent for at least several years.[8]
Fire ecology
This species has been found in habitat that is often maintained by fire. [3]
Conservation and management
This species is considered to be critically imperiled in Virginia.[9]
Cultivation and restoration
Photo Gallery
References and notes
- ↑ 1.0 1.1 Radford, Albert E., Harry E. Ahles, and C. Ritchie Bell. Manual of the Vascular Flora of the Carolinas. 1964, 1968. The University of North Carolina Press. 709-715. Print.
- ↑ 2.0 2.1 2.2 Weakley, A. S. (2015). Flora of the Southern and Mid-Atlantic States. Chapel Hill, NC, University of North Carolina Herbarium.
- ↑ 3.0 3.1 3.2 3.3 Florida State University Robert K. Godfrey Herbarium database. URL: http://herbarium.bio.fsu.edu. Last accessed: June 2014. Collectors: Loran C. Anderson, Wilson Baker, R. A. Norris, and M. Davis. States and Counties: Florida: Gadsden, Liberty, and Wakulla. Georgia: Grady and Thomas.
- ↑ USDA, NRCS. (2016). The PLANTS Database (http://plants.usda.gov, 28 May 2019). National Plant Data Team, Greensboro, NC 27401-4901 USA.
- ↑ Carr, S. C., et al. (2010). "A Vegetation Classification of Fire-Dependent Pinelands of Florida." Castanea 75(2): 153-189.
- ↑ Carr, S.C., K.M. Robertson, and R.K. Peet. 2010. A vegetation classification of fire-dependent pinelands of Florida. Castanea 75:153-189.
- ↑ 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: 12 DEC 2016
- ↑ Platt, W. J., S. M. Carr, et al. (2006). "Pine savanna overstorey influences on ground-cover biodiversity." Applied Vegetation Science 9: 37-50.
- ↑ [[1]] NatureServe Explorer. Accessed: May 28, 2019
