Hypericum gymnanthum - Engelm. & Gray
Claspingleaf St. John's-wort
Other Common Names: claspingleaf St. Johnswort
Taxonomic Status: Accepted
Related ITIS Name(s): Hypericum gymnanthum Engelm. & Gray (TSN 21443)
Unique Identifier: ELEMENT_GLOBAL.2.150315
Element Code: PDCLU030W0
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 gymnanthum
Conservation Status
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NatureServe Status

Global Status: G4
Global Status Last Reviewed: 02Jun1994
Global Status Last Changed: 02Jun1994
Rounded Global Status: G4 - Apparently Secure
Reasons: Wide ranging species but due to restricted habitat is not extremely common anywhere in range.
Nation: United States
National Status: N4

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 Alabama (SNR), Arkansas (SNR), Delaware (S2), District of Columbia (SNR), Florida (SNR), Georgia (SNR), Illinois (SNR), Indiana (S1), Kansas (SNR), Kentucky (S1), Louisiana (SNR), Maryland (S3), Mississippi (SNR), Missouri (SNR), New Jersey (S1), New York (SX), North Carolina (S3S4), Ohio (S2), Pennsylvania (S1), South Carolina (SNR), Tennessee (SNR), Texas (SNR), Virginia (S4), West Virginia (SNR)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Texas east to Florida, north to New Jersey, Tennessee, Ohio, and Illinois.

Overall Threat Impact Comments: Habitat subject to development.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Texas east to Florida, north to New Jersey, Tennessee, Ohio, and Illinois.

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 AL, AR, DC, DE, FL, GA, IL, IN, KS, KY, LA, MD, MO, MS, NC, NJ, NYextirpated, OH, PA, SC, TN, TX, VA, WV

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
DE Sussex (10005)
IN Daviess (18027), Newton (18111), Ripley (18137)
KY Hopkins (21107)
MD Dorchester (24019), Kent (24029), Prince Georges (24033), Somerset (24039), St. Marys (24037)*, Wicomico (24045), Worcester (24047)
NJ Atlantic (34001)*, Burlington (34005)*, Cumberland (34011)*, Salem (34033)
OH Erie (39043), Pike (39131)
PA Bucks (42017)*, Centre (42027)*, Delaware (42045)*, Huntingdon (42061), Lehigh (42077)*
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
02 Lehigh (02040106)+*, Crosswicks-Neshaminy (02040201)+*, Lower Delaware (02040202)+*, Cohansey-Maurice (02040206)+, Broadkill-Smyrna (02040207)+, Great Egg Harbor (02040302)+*, Bald Eagle (02050204)+*, Upper Juniata (02050302)+, Chester-Sassafras (02060002)+, Choptank (02060005)+, Lower Potomac (02070011)+, Western Lower Delmarva (02080109)+, Eastern Lower Delmarva (02080110)+, Pokomoke-Western Lower Delmarva (02080111)+
04 Sandusky (04100011)+
05 Lower Scioto (05060002)+, Little Scioto-Tygarts (05090103)+, Lower Green (05110005)+, Lower White (05120202)+, Muscatatuck (05120207)+
07 Iroquois (07120002)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: Erect perennial herb with opposite egg-shaped leaves, the small yellow flowers borne in a wide-branching cluster.
Technical Description: Perennial. Stems solitary and simple or 2 to several simple ones from the base, erect, slender, 1-6 dm tall, the cymes usually well aloft of the foliage leaves, thus appearing "naked" (relative to H. mutilum). Lower leaves much smaller than the medial and upper ones; medial and upper leaves firm, ovate-triangular, usually clasping, pointed apically, 5-7-nerved, about 1.5 cm long and 1 cm wide at the base, finely punctate-dotted, usually on both surfaces. Sepals 5, 3-5 mm long, lanceolate, long-acute to acuminate apically, oil tubes showing as lines. Petals 5, yellow, 3-6 mm long. Stamens few. Styles 3, 0.5-1 mm long. Capsules ellipsoid-conical, 3-4 mm long, equaling or slightly exceeding the calyx. Seeds buffish, minute, oblong, about 0.3 mm long, very faintly reticulate. (Godfrey and Wooten 1981)
Diagnostic Characteristics: Leaves within the cyme generally much reduced in size to small subulate bracts (others usually have more or less full-size leaves at branching points of the cyme); leaves ovate, 5-7-nerved, tapered to a point apically (others have leaves narrower or rounded); stamens few (5-12); styles separate; sepals lanceolate; capsule conic. H. mutilum, with which it may hybridize, is often diffusely branched, has usually some unreduced leaves in the cyme, leaves rounded or blunt-tipped, sepals narrowly elliptic, and capsule oblong to elliptic. (Godfrey and Wooten 1981, Radford et al. 1968, Fernald 1950, Gleason and Cronquist 1991)
Duration: PERENNIAL, DECIDUOUS
Reproduction Comments: Apomixis and self-fertilization have been recorded for the genus (Asker and Jerling 1992). Possibly beetle-pollinated.
Palustrine Habitat(s): Bog/fen, FORESTED WETLAND, HERBACEOUS WETLAND, Riparian
Terrestrial Habitat(s): Forest/Woodland, Grassland/herbaceous, Savanna, Woodland - Conifer
Habitat Comments: "Bogs, sandy or muddy shores, marshy shores, savannas, cypress depressions in flatwoods, swales, glades" (Godfrey and Wooten 1981). "Moist or wet, usually sandy soil" (Gleason and Cronquist 1991). "Bogs and savannas" (Radford et al. 1968).
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: 08Jul1991
NatureServe Conservation Status Factors Author: Broaddus, L. rev. C. Annable
Element Ecology & Life History Edition Date: 21Feb1995
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.

  • DAVIS, C.A. AND MARYLAND NATURAL HERITAGE PROGRAM. 1994. PHOTOGRAPHS OF SOME OF THE RARE, THREATENED, AND ENDANGERED SPECIES OBSERVED AT ANDREWS AIR FORCE BASE AND REMOTE PROPERTIES. CONTRACT AJXF921706X1, BIOLOGICAL SURVEY. (BINDER WITH 21 PRINTS OF 8 SPECIES.)

  • DAVIS, C.A. AND MARYLAND NATURAL HERITAGE PROGRAM. 1994. RARE, THREATENED, AND ENDANGERED SPECIES AND NATURAL AREA SURVEY OF ANDREWS AIR FORCE BASE AND ITS REMOTE PROPERTIES, BRANDYWINE AND DAVIDSONVILLE COMMUNICATION SITES. FINAL REPORT OF FINDINGS AND MANAGEMENT RECOMMENDATIONS. 278 PP WITH MAPS, APPENDICES, ETC.

  • Fernald, M. L. 1950. Gray's manual of botany. 8th edition. Corrected printing (1970). D. Van Nostrand Company, New York. 1632 pp.

  • Gleason, H.A. 1952. The new Britton and Brown illustrated flora of the northeastern United States and adjacent Canada. 3 volumes. Hafner Press, New York. 1732 pp.

  • Gleason, H.A., and A. Cronquist. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. New York Botanical Garden, Bronx, New York. 910 pp.

  • Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. The New York Botanical Garden, Bronx, New York. 910 pp.

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

  • HOWIE, S.L. AND K.C. WATSON. 1995. SPECIES AND NATURAL COMMUNITIES OF CONCERN ON U.S. AIR FORCE LANDS: AN INSTALLATION SPECIFIC HANDBOOK FOR ANDREWS AIR FORCE BASE. THE NATURE CONSERVANCY, ARLINGTON, VA. 494 PP.

  • Holmgren, Noel. 1998. The Illustrated Companion to Gleason and Cronquist's Manual. Illustrations of the Vascular Plants of Northeastern United States and Adjacent Canada. The New York Botanical Garden, Bronx, New York.

  • Hough, M. Y. 1983. New Jersey Wild Plants. Harmony Press, Harmony, New Jersey. 414 pp.

  • 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.

  • Mitchell, Richard S. and Gordon C. Tucker. 1997. Revised Checklist of New York State Plants. Contributions to a Flora of New York State. Checklist IV. Bulletin No. 490. New York State Museum. Albany, NY. 400 pp.

  • Radford, A. E., H. E. Ahles, and C. R. Bell. 1968. Manual of the Vascular Flora of the Carolinas. University of North Carolina Press, Chapel Hill. 1183 pp.

  • 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.

  • Swink, F., and G. Wilhelm. 1994. Plants of the Chicago Region. Morton Arboretum. Lisle, Illinois.

  • Tatnall, R.R. 1946. Flora of Delaware and the Eastern Shore: an annotated list of the ferns and flowering plants of the peninsula of Delaware, Maryland, and Virginia. Soc. Nat. Hist. Del. 313 pp.

  • Weldy, T. and D. Werier. 2010. New York flora atlas. [S.M. Landry, K.N. Campbell, and L.D. Mabe (original application development), Florida Center for Community Design and Research http://www.fccdr.usf.edu/. University of South Florida http://www.usf.edu/]. New York Flora Association http://wwws.nyflora.org/, Albany, New York

  • Zaremba, Robert E. 1991. Corrections to phenology list of April 9, 1991.

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