Agalinis obtusifolia
| Agalinis obtusifolia | |
|---|---|
| |
| 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 names: Tenlobe False Foxglove
Contents
Taxonomic notes
Synonyms: A. decemloba (Greene) Pennell; A. tenella Pennell; Gerardia obstusifolia (Rafinesque) Pennell
Description
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[1].
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[1].
Distribution
It is infrequent in all of Florida. Found west to Mississippi and north to Pennsylvania [2]. It's found within the Coastal Plain, from Delaware to the Florida Keys, westward to southeastern Louisiana [3].
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). It is also occurs on shallow calcareous soils of limestone glades of northern Florida and oolitic limerock of slash pine rocklands in sothern Florida [4]. It occurs in primarily high light areas maintained by fire or edaphic conditions but also partial shade adjacent to open areas. It is tolerant of competition with dense grass and often occurs in conjuction 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 [4]. It is found in pine savannas, flatwoods, and bog margins[5]. It is also found in seasonally wet pine savannas and flatwoods, hillside bogs in pinelands, in shallow soil on oolitic limestone in pinelands [3].
Associated species include Hypericum, Eupatorium; Agalinis divaricata, Agalinis filicaulis, Aristida stricta, Pinus palustris, Seymeria, Quercus; Aristida berichiana, Serenoa repens, Schoenus nigricans, Rhyncospora divergerns, Liatris, Schoenus nigricans, Pinus elliottii and others [4].
Phenology
It flowers in March through November[4], mostly in September and October in northern Florida[6]. This species also starts to fruit September through October [4].
Fire ecology
It does well in frequently burned old growth longleaf pine and wiregrass savannas [4].
References and notes
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.
- ↑ 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. 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.
- ↑ 3.0 3.1 Godfrey, Robert K. and Jean W. Wooten. Aquatic and Wetland Plants of Southeastern United States: Dicotyledons. 1981. University of Georgia Press. 663, 665. Print.
- ↑ 4.0 4.1 4.2 4.3 4.4 4.5 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.
- ↑ 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.
- ↑ [PanFlora Plant Database Accessed 15 JAN 2016]
