Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Dwarf mistletoes: Biology, pathology, and systematics

    Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Frank G. Hawksworth; Delbert Wiens
    Date: 1996
    Source: Agricultural Handbook 709. Washington, D.C.: U.S. Dept. of Agriculture, Forest Service. 410 p.
    Publication Series: Agricultural Handbook
    Station: Rocky Mountain Research Station
    PDF: Download Publication  (42.71 MB)

    Description

    Arceuthobium (dwarf mistletoes), a well defined but morphologically reduced genus of the family Viscaceae, is parasitic on Pinaceae in the Old and New Worlds and on Cupressaceae in the Old World. Although conifer forests in many parts of the Northern Hemisphere are infested with dwarf mistletoes, those most commonly infested are in western North America and Mexico. In North America, Arceuthobium ranges from central Canada and southeastern Alaska to Honduras. Only A. pusillum occurs in eastern North America, and only A. juniperi-procerae is found in the Southern Hemisphere. Arceuthobium bicarinatum and A. azoricum are restricted to islands (Hispaniola and the Azores, respectively).

    In this taxonomic revision, the 46 recognized taxa comprise 42 species - 4 with 2 subspecies each, and 1 with 2 formae speciales. Eight species are known in the Old World and thirty-four species occur in the New. Natural hybridization and polyploidy are unknown and have resulted in a relatively clear, dendritic line of evolution. The genus is probably of early Tertiary origin and its closest relative is the genus Notothixos, which has tropical Asian and Australasian distribution. Arceuthobium presumably migrated to the New World before the Miocene Epoch. Intensive adaptive radiation occurred into the Pinacea. Some of the species of Abies, Picea, Tsuga, Larix, and Pseudotsuga and 95% of the species of Pinus are parasitized.

    Individual chapters from this publications

    Also available in HTML format: http://www.rms.nau.edu/publications/ah_709/

    Publication Notes

    • You may send email to rmrspubrequest@fs.fed.us to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Hawksworth, Frank G.; Wiens, Delbert. 1996. Dwarf mistletoes: Biology, pathology, and systematics. Agricultural Handbook 709. Washington, D.C.: U.S. Dept. of Agriculture, Forest Service. 410 p.

    Keywords

    Dwarf Mistletoe, Arceuthobium, morphological characteristics

    Related Search

    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/4699