Hypericum edisonianum - (Small) P. Adams & Robson
Edison's Ascyrum
Other English Common Names: Arcadian St. John's-wort
Other Common Names: Arcadian St. Johnswort
Taxonomic Status: Accepted
Related ITIS Name(s): Hypericum edisonianum (Small) P. Adams & Robson (TSN 503134)
Unique Identifier: ELEMENT_GLOBAL.2.140722
Element Code: PDCLU030L0
Informal Taxonomy: Plants, Vascular - Flowering Plants - St. John's-Wort Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Theales Clusiaceae Hypericum
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Concept Reference
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Concept Reference: Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Concept Reference Code: B94KAR01HQUS
Name Used in Concept Reference: Hypericum edisonianum
Conservation Status
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NatureServe Status

Global Status: G2
Global Status Last Reviewed: 29Dec1997
Global Status Last Changed: 19Jul1984
Rounded Global Status: G2 - Imperiled
Reasons: A narrow Florida endemic with a habitat that is quickly diminishing in quality and extent due to extreme development pressure. The Florida Natural Areas Inventory's database contains 24 occurrence records, located within Polk, Highlands, De Soto, and Glades counties, Florida.
Nation: United States
National Status: N2

U.S. & Canada State/Province Status
Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
United States Florida (S2)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Endemic to Lake Wales Ridge, occurs in Polk, Highlands, Glades, and DeSoto Counties, Florida.

Number of Occurrences: 21 - 80
Number of Occurrences Comments: The Florida Natural Areas Inventory database contains 24 occurrence records in Florida (as of 10/97).

Population Size Comments: Locally abundant through vegetative spread; difficult to determine individuals because of colonial habit.

Overall Threat Impact Comments: Loss of habitat through drainage, development or agriculture.

Intrinsic Vulnerability Comments: Tied to natural hydrologic regime.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Endemic to Lake Wales Ridge, occurs in Polk, Highlands, Glades, and DeSoto Counties, Florida.

U.S. States and Canadian Provinces

Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
Color legend for Distribution Map

U.S. & Canada State/Province Distribution
United States FL

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
FL DeSoto (12027)*, Glades (12043), Highlands (12055), Polk (12105)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
03 Kissimmee (03090101)+, Western Okeechobee Inflow (03090103)+, Caloosahatchee (03090205)+, Peace (03100101)+*
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: An erect, colonial shrub, about 1 m tall. Stems tend to remain unbranched until the top, where the plant becomes much-branched. The bark is smooth. Leaves are opposite, 15-25 mm long. Flowers have 4 yellow petals, 12-18 mm long. (Ward 1979, Kral 1983)
Technical Description: Shrub to 15 dm high, mostly erect at the base. Stems: the base terete or nearly so, smooth, the bark pale brown, repeatedly forking-branching above, but essentially leafless save for uppermost branches, there densely leafy, all this from a woody, spreading, shallow root system. Leaves-- Opposite, sessile, leathery, smooth, elliptic to oblong or broadly spatulate, mostly 1-2 cm long, ascending, acute, or short-acuminate, entire, the bases rounded, slightly clasping, the upper surface glaucous-green, the lower surface paler and yellow-green, gland-dotted, with a raised midrib; stipules present as large reddish-brown glands at sides of blade bases. Inflorescence-- Flowers symmetrical, terminating the numerous leafy branchlets, often their bases hidden by leaves, on erect or curved stalks 5-10 mm long, bearing 2 small, narrowly-triangular, scaly bracts well below the calyx base. Flowers-- Calyx of 2 series, the outer series of 2 largest, erect, broadly elliptic or ovate, mostly 9-15 cm long, acute to short-acuminate, entire, the bases broadly rounded or cordate, clasping; inner pair concealed by outer, shorter, narrower, linear-lanceolate. Petals 4, subequal, 10-18 mm long, distinct obliquely obovate, yelow, spreading. Stamens numerous in a yellowish tuft. Ovary superior, ovoid, the carpels 3-4, styles 3-4, slender. This plant forms thickets, developing shoots at intervals from the spreading shallow roots. (Kral 1983)
Diagnostic Characteristics: Woody plant; sepals and petals 4 each; styles 3 or 4 (H. hypericoides has styles 2); outer sepals much larger than the inner (H. microsepalum has outer sepals not much larger than inner); bark tight and smooth (H. crux-andreae and H. tetrapetalum have bark exfoliating in thin strips); outer sepals acute or acuminate apically (H. crux-andreae has them broadly obtuse to rounded apically) (Godfrey & Wooten 1981). Has generally narrower leaves and outer sepals, and much bushier habit, than H. crux-andreae (Kral 1983).
Duration: PERENNIAL
Reproduction Comments: Insect pollination assumed from showy flowers; some members of the family are beetle-pollinated (Cronquist 1981). Distyly occurs in the genus (Ganders 1979). Aposporic apomixis and both self-fertilization and self-incompatibility are known from the genus (Asker & Jerling 1992).
Palustrine Habitat(s): HERBACEOUS WETLAND, SCRUB-SHRUB WETLAND
Terrestrial Habitat(s): Forest - Conifer, Forest Edge, Forest/Woodland, Old field
Habitat Comments: SUMMARY: Sandy soil of low, wet prairies, depressions in pine flatwoods, and pond margins. END SUMMARY. Pine flatwoods, flatwoods ponds and depressions, wet prairies (Godfrey & Wooten 1981). "Typically on high hydroperiod soils of prairies, pondshores, and pineland grass sedge clearings. Here it is admixed with a large variety of grasses, sedges, orchids, polygals, Ludwigia, etc., these amidst a scattering of palmetto. Periodic firing of these prairies and grassy clearings during dry seasons and droughts has helped to maintain such species as this." (Kral 1983)
Economic Attributes Not yet assessed
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Management Summary Not yet assessed
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Population/Occurrence Delineation Not yet assessed
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Population/Occurrence Viability
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U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
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Authors/Contributors
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NatureServe Conservation Status Factors Edition Date: 01Jun1991
NatureServe Conservation Status Factors Author: Cooper, S.T. & E.D. Hardin, rev. D.L. White
Element Ecology & Life History Edition Date: 28Feb1995
Element Ecology & Life History Author(s): M.E. STOVER, TNC-HO

Botanical data developed by NatureServe and its network of natural heritage programs (see Local Programs), The North Carolina Botanical Garden, and other contributors and cooperators (see Sources).

References
Help
  • Asker, S.E., and L. Jerling. 1992. Apomixis in plants. CRC Press, Boca Raton, Florida. 298 pp.

  • Ganders, F.R. 1979. The biology of heterostyly. New Zealand J. Botany 17: 607-635.

  • Godfrey, R.K., and J.W. Wooten. 1981. Aquatic and wetland plants of southeastern United States: Dicotyledons. Univ. Georgia Press, Athens. 933 pp.

  • KRAL, R. 1983.A REPORT ON SOME RARE,THREATENED,OR ENDANGEREDFOREST-RELATED VASCULAR PLANTS OF THE SOUTH.VOL I ISOETACEAETHROUGH EUPHORBIACEAE;VOL II AQUIFOLIACEA THROUGH ASTERACEAE& GLOSSARY.USDA FOREST SERV,SE REG.,ATL,GA. TECH PUBL R8-TP2

  • Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.

  • Kral, R. 1983c. A report on some rare, threatened, or endangered forest-related vascular plants of the South. U.S. Dept. of Agriculture Forest Service Technical Publication R8-TP2, Athens, GA. 1305 pp.

  • RADFORD, A., H. AHLES AND C. BELL. 1968 MANUAL OF THE VASCULAR FLORA OF THE CAROLINAS. THE UNIVERSITY OF NORTH CAROLINA PRESS CHAPEL HILL. 1183 PP + LXI.

  • Radford, A.E., H.E. Ahles, and C.R. Bell. 1968. Manual of the vascular flora of the Carolinas. Univ. North Carolina Press, Chapel Hill, NC. 1183 pp.

  • WARD, D.B. (ED). 1979. RARE AND ENDANGERED BIOTA OF FLORIDA, VOLUME 5: PLANTS. UNIVERSITY PRESSES OF FLORIDA, GAINESVILLE.

  • WUNDERLIN, RICHARD P. 1982. GUIDE TO THE VASCULAR PLANTS OF CENTRAL FLORIDA. UNIV. PRESSES OF FLA., TAMPA, ST. PETERSBURG, FT. MEYERS, SARASOTA

  • Ward, D.B., ed. 1979. Rare and endangered biota of Florida. Vol. 5: Plants. Univ. Presses of Florida, Gainesville.

  • Wunderlin, R.P. 1982. Guide to the vascular plants of central Florida. Univ. Presses Florida, Gainesville. 472 pp.

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