Difference between revisions of "Agalinis obtusifolia"
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<!--Annual. Parasitic to the roots of grasses and other herbs. Leaves are opposite, linear to filiform, and sometimes will have tufts on the shoots. Flowers are showy, in terminal racemes; the calyx is 5-parted, the lobes are shorter than the tube; the corolla is 5-parted. The flowers are rose-lavender in color and are rarely white. There are usually 2 yellow lines and numerous purple spots in the throat on the tube. The tube is broad, campanulate, and the lobes are shorter than the tube. The throat is usually lanose at the base of the 2 upper corolla lobes. There are 4 stamens, didynamous, that include filaments and anthers that are also lanose. The stigmas are elongated. The capsules are globose or subglobose, loculicidal.<ref name="Radford 1964">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. 960. Print.</ref> | <!--Annual. Parasitic to the roots of grasses and other herbs. Leaves are opposite, linear to filiform, and sometimes will have tufts on the shoots. Flowers are showy, in terminal racemes; the calyx is 5-parted, the lobes are shorter than the tube; the corolla is 5-parted. The flowers are rose-lavender in color and are rarely white. There are usually 2 yellow lines and numerous purple spots in the throat on the tube. The tube is broad, campanulate, and the lobes are shorter than the tube. The throat is usually lanose at the base of the 2 upper corolla lobes. There are 4 stamens, didynamous, that include filaments and anthers that are also lanose. The stigmas are elongated. The capsules are globose or subglobose, loculicidal.<ref name="Radford 1964">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. 960. Print.</ref> | ||
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Is a light yellow-green colored annual. It does not blacken when being dried. The stems are slender, stiff, puberulent or glabrous, and striate-angled. Growing 3-9dm tall. The stems are moderately to profusely branched form the upper half of the stem. The leaves are linear to narrowly linear-obovate or spatulate, about 5-15mm long, ca. 1mm wide, and are scaberulous above. The terminal racemes are distinct. The pedicels are mostly 10-25mm long. The calyx tube is 2-3mm long, are reticulate veined, truncated. The lobes are reduced to mucronate tips that are less man 0.3mm long. The corolla is pale in color, 1-1.5cm long. The throat is not yellow striate. The corolla is lanose at the base of the 2 upper corolla lobes. The capsules are globose, are 2-3mm in diameter. Flowers from September to October.<ref name="Radford 1964"/> --> | Is a light yellow-green colored annual. It does not blacken when being dried. The stems are slender, stiff, puberulent or glabrous, and striate-angled. Growing 3-9dm tall. The stems are moderately to profusely branched form the upper half of the stem. The leaves are linear to narrowly linear-obovate or spatulate, about 5-15mm long, ca. 1mm wide, and are scaberulous above. The terminal racemes are distinct. The pedicels are mostly 10-25mm long. The calyx tube is 2-3mm long, are reticulate veined, truncated. The lobes are reduced to mucronate tips that are less man 0.3mm long. The corolla is pale in color, 1-1.5cm long. The throat is not yellow striate. The corolla is lanose at the base of the 2 upper corolla lobes. The capsules are globose, are 2-3mm in diameter. Flowers from September to October.<ref name="Radford 1964"/> --> | ||
Revision as of 12:32, 21 June 2021
| Agalinis obtusifolia | |
|---|---|
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| Photo was taken by Gil Nelson | |
| Scientific classification | |
| Kingdom: | Plantae |
| Division: | Magnoliophyta - Flowering plants |
| Class: | Magnoliopsida - Dicotyledons |
| Order: | Lamiales |
| Family: | Orobanchaceae |
| Genus: | Agalinis |
| Species: | A. obtusifolia |
| Binomial name | |
| Agalinis obtusifolia Raf. | |
| |
| Natural range of Agalinis obtusifolia from USDA NRCS Plants Database. | |
Common name: Tenlobe false foxglove
Contents
Taxonomic notes
Synonyms: A. decemloba (Greene) Pennell; A. tenella Pennell; Gerardia obstusifolia (Rafinesque) Pennell.[1]
Description
Agalinis obtusifolia is a light yellow-green colored annual plant that is parasitic to the roots of grasses and other herbs. The stems are slender, stiff, and branched from the upper half. They grow between 30 – 90 cm tall and have narrow, short leaves that are rough to the touch. The flowers are distinct terminal clusters that are rose-lavender or (rarely) white in color with 4 stamens and elongated stigmas. [2]
Distribution
A. obtusifolia is infrequent in all of Florida. Found west to Mississippi and north to Pennsylvania.[3] It's found within the Coastal Plain, from Delaware to the Florida Keys, westward to southeastern Louisiana,[4] with disjunct populations in the Eastern Highland Rim and Cumberland Plateau regions of Tennessee and Kentucky.[5]
Ecology
Habitat
In the Coastal Plain it occurs in frequently burned upland pine communities (Ultisols), flatwoods (Spodosols), and wet meadows, savannas, and seepage slopes (pitcher plant bogs) including peaty areas (Histosols). A. obtusifolia also occurs on the margins of these communities.[6] and seasonally on shallow calcareous soils of limestone glades in northern Florida and oolitic limerock of slash pine rocklands in sothern Florida.[7][4]
It occurs in primarily high light areas maintained by fire or edaphic conditions but will tolerate the partial shade adjacent to open areas. It is tolerant of competition with dense grass and often occurs in conjunction in areas dominated by bunch grasses and sedges. It seems to be limited to native pine and wet prairie communities with minimal soil disturbance, although it can occur on roadsides.[7]
Associated species include Hypericum, Eupatorium, Seymaria, Quercus, and Liatris species, Agalinis divaricata[1], Agalinis filicaulis, Aristida stricta[2], Pinus palustris[3], Aristida berichiana, Serenoa repens[4], Schoenus nigricans, Rhyncospora divergerns, Schoenus nigricans, Pinus elliottii[5] and others.[7]
Phenology
Agalinis obtusifolia has been observed to flower March through November,[7] with peak inflorescence in September and October in northern Florida.[8] This species also starts to fruit September through October.[7]
Seed dispersal
This species is thought to be dispersed by gravity. [9]
Seed bank and germination
Length of seed viability within the seed bank is unknown.[10]
Fire ecology
It does well in frequently burned old growth longleaf pine and wiregrass savannas.[7]
Pollination and use by animals
Pollination occurs by selfing and out-crossing. Specific pollinators have not been documented.[10] Agalinis species, including this one, host larvae of the common buckeye butterfly (Junonia coenia) in Florida.[11]
Conservation, cultivation, and restoration
A. obtusifolia is listed as endangered in the states of Kentucky and Maryland, and is listed as extirpated in the state of Pennsylvania. [12]
Cultural use
Photo Gallery
References and notes
- ↑ Weakley, A.S. 2015. Flora of the southern and mid-atlantic states. Working Draft of 21 May 2015. University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
- ↑ 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. 960. Print.
- ↑ Hall, David W. Illustrated Plants of Florida and the Coastal Plain: based on the collections of Leland and Lucy Baltzell. 1993. A Maupin House Book. Gainesville. 342. Print.
- ↑ 4.0 4.1 Godfrey, Robert K. and Jean W. Wooten. Aquatic and Wetland Plants of Southeastern United States: Dicotyledons. 1981. University of Georgia Press. 663, 665. Print.
- ↑ Sorrie, B. A. and A. S. Weakley 2001. Coastal Plain valcular plant endemics: Phytogeographic patterns. Castanea 66: 50-82.
- ↑ Wunderlin, Richard P. and Bruce F. Hansen. Guide to the Vascular Plants of Florida. Second edition. 2003. University Press of Florida: Gainesville/Tallahassee/Tampa/Boca Raton/Pensacola/Orlando/Miami/Jacksonville/Ft. Myers. 547. Print.
- ↑ 7.0 7.1 7.2 7.3 7.4 7.5 Florida State University Robert K. Godfrey Database. URL: http://herbarium.bio.fsu.edu. Last accessed: June 2014. Collectors: Loran C. Anderson, Wilson Baker, W. C. Brumbach, J.M. Canne, Robert K. Godfrey, J. Hays, Richard D. Houk, Ann F. Johnson, Nancy E. Jordan, R. Kral, R. Komarek, S.W. Leonard, Sidney McDaniel, and Alfred Schotz. States and Counties: Florida: Calhoun, Gadsden, Holmes, Jackson, Liberty, Monroe, Santa Rosa, Wakulla, and Walton. Georgia: Baker, Thomas, and Worth.
- ↑ 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: 15 JAN 2016
- ↑ 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.
- ↑ 10.0 10.1 [[6]]NatureServe. Accessed: March 22, 2016
- ↑ Observation by Roger Hammer in Silver Springs State Park, Marion County, FL. September 2016, posted to Florida Flora and Ecosystematics Facebook Group August 4, 2017.
- ↑ USDA Plants Database URL: https://plants.usda.gov/core/profile?symbol=ANGE
