Taxon: Crataegus calpodendron (Ehrh.) Medik.

Genus: Crataegus
Family: Rosaceae
  Subfamily: Amygdaloideae
      Tribe: Maleae
        Subtribe: Malinae
Nomen number: 313727
Place of publication: Gesch. Bot. 83. 1793
Comment: = C. tomentosa sensu auctt.
Name Verified on: 08-Jun-1988 by ARS Systematic Botanists. Last Changed: 25-Jan-2002
Species priority site is: National Arboretum (NA)
Accessions: 5 in National Plant Germplasm System (GoogleMap)

Common names:

  • blackthorn hawthorn  (Source: F Penn) - English
  • pear hawthorn  (Source: Trees US) - English
  • pearthorn  (Source: Hortus 3) - English
  • urn-tree hawthorn  (Source: F GPlains) - English

Distributional Range:


  • Northern America

    • Eastern Canada: Canada - Ontario
    • North-Central U.S.A.: United States - Illinois, - Iowa, - Kansas, - Minnesota, - Missouri, - Oklahoma, - Wisconsin
    • Northeastern U.S.A.: United States - Indiana, - Michigan, - New York, - Ohio, - Pennsylvania, - West Virginia
    • South-Central U.S.A.: United States - Texas
    • Southeastern U.S.A.: United States - Alabama, - Arkansas, - Georgia, - Kentucky, - Louisiana, - Maryland, - Mississippi, - North Carolina, - Tennessee, - Virginia


  • Britton, N. L. & A. Brown An illustrated flora of the northern United States, Canada and the British possessions, ed. 3. 1952 (IllF N US Can)
  • Brown, R. G. & M. L. Brown Woody plants of Maryland. 1972 (WPl Mary)
  • Browne, E. T. & R. Athey Vascular plants of Kentucky: an annotated checklist. 1992 (L Kentucky)
  • Chester, E. W. et al. Atlas of Tennessee vascular plants. 1993-1997 (Atlas Tenn)
  • Correll, D. S. & M. C. Johnston Manual of the vascular plants of Texas. 1970 (F Tex)
  • Deam, C. C. Flora of Indiana. 1940 (F Indiana)
  • Duncan, W. H. & J. T. Kartesz Vascular flora of Georgia: an annotated checklist. 1981 (L Georgia)
  • Eilers, L. J. & D. M. Roosa The vascular plants of Iowa. 1994 (L Iowa)
  • Grellin, J. K. & J. Philpott A reference guide to medicinal plants. 1990 (RefGuide MedPl)
  • Liberty Hyde Bailey Hortorium Hortus third. 1976 (Hortus 3)
  • Little, E. L., Jr. Checklist of United States trees, Agric. Handb. 541. 1979 (Trees US)
  • McGregor, R. L. et al. (The Great Plains Flora Association) Flora of the Great Plains. 1986 (F GPlains)
  • McGregor, R. L. et al. (The Great Plains Flora Association) Atlas of the Flora of the Great Plains. 1977 (Atlas GPlains)
  • Mitchell, R. S., ed. A checklist of New York state plants. New York State Mus. Bull. 458. 1986 (L New York)
  • Moerman, D. Native American ethnobotany, ed. 5. 1998 (Nat Amer Ethnobot)
  • Mohlenbrock, R. H. Guide to the vascular flora of Illinois. 1975 (F IllMohl)
  • Mohlenbrock, R. H. & D. M. Ladd Distribution of Illinois vascular plants. 1978 (Atlas Ill)
  • Ownbey, G. B. & T. Morley Vascular plants of Minnesota: a checklist and atlas. 1991 (L Minn)
  • Phipps, J. B. & M. Muniyamma 1980. A taxonomic revision of Crataegus (Rosaceae) in Ontario Canad. J. Bot. 58:1679.
  • Radford, A. E. et al. Manual of the vascular flora of the Carolinas. 1964 (F Carolin)
  • Rhoads, A. F. & T. A. Block The plants of Pennsylvannia. An illustrated manual. 2000 (F Penn)
  • Scoggan, H. J. The flora of Canada, 4 vol. 1978-1979 (F Canada)
  • Steyermark, J. A. Flora of Missouri. 1977 (F Missouri)
  • Strausbaugh, T. D. & E. L. Core Flora of West Virginia, ed. 2. 1978 (F WVa)
  • Voss, E. Michigan flora. 1972- (F Mich)
  • Wherry, E. T. et al. Atlas of the flora of Pennsylvania. 1979 (Atlas Penn)


Check other web resources for Crataegus calpodendron (Ehrh.) Medik. :

  • PLANTS: USDA-NRCS Database of Plants of the United States and its Territories
  • BONAP North American Plant Atlas of the Biota of North America Program:
  • TROPICOS: Nomenclatural and Specimen Database of the Missouri Botanical Garden
  • ICRA: International Cultivar Registration Authority (on-line resource). for Crataegus calpodendron cultivars
  • ePIC: Electronic Plant Information Centre of Royal Botanic Gardens, Kew
  • AGRICOLA: Article Citation Database or NAL Catalog of USDA's National Agricultural Library
  • Entrez: NCBI's search engine for PubMed citations, GenBank sequences, etc.