SOUTHEASTERN CHAPTER    AMERICAN RHODODENDRON SOCIETY
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  • HOME
  • About
    • Benefits of Membership
    • Renew or Join
    • Officers
    • History of SE-ARS
    • HELP: How to use our website
    • 2012 ARS/ASA Convention
    • Contact Us
    • Events >
      • Upcoming & Past Events >
        • Calendar View
      • Flower Show Information >
        • 2018 Flower Show
        • 2017 Flower Show
        • 2016 Flower Show
        • 2015 Flower Show
        • 2014 Flower Show
  • BRR
  • Info
    • Dexter Study Group >
      • Don Kellam
    • Plant Sources
    • "Good Doers"
    • How to plant and care for a rhododendron
    • Rhododendron diseases & pests
    • How to propagate rhododendrons
    • How to hybridize rhododendrons
    • Other rhododendron links
    • Rhododendrons for Upstate South Carolina
    • RhodoWeather
    • ARS Blog
    • Hooper Bald
    • Rosebay
  • Photos
    • 2019 ASA CONVENTION
    • 2020 Virtual Flower Show
    • New Hybrids
    • Submit Photos
    • 2015 Photo Contest
    • General Gallery
    • Featured Rhodos >
      • Red R. maximum
      • R. hyperythrum
  • Members
    • Join or Renew >
      • Mail Application
    • Plant Payment
    • Gardens
    • JOURNAL ARS
    • Custom Search
    • SE-ARS Board Minutes (log in)
    • SE-ARS Member and Assoc Roster (log in)
    • Treasurer's Report 2016-24 >
      • Treasurer's Reports 2015 (log in) >
        • Treasurer's Reports 2014 (log in)
    • SE-ARS Meeting Minutes
Featured rhododendron:  R. hyperythrum.

Rhododendron hyperythrum is a species which is native to a small area at lower elevation (3000-4000 ft) in the mountains of northern Taiwan.   It is of particular interest to us in the Southeast because of its heat and drought tolerance, probably related to a vigorous root system, resistance to Phytophthora root rot, and relative cold tolerance.   It gets its name from the presence of minute red-brown dots on the leaf undersurfaces.   It has easily recognized characteristic recurved leaves, although it is said that in the wild habitat, the leaves are flat.   Flowers  have pinkish buds, opening to white, with pink, red or purple speckles, with some pure white forms, and rare pink flowered forms.   Some plants feature bronze new leaf growth.   Flowering time is early in the season (early April in upstate South Carolina), so that flowers are sometimes affected by late frosts.   It is considered to have a maximum height of 6 feet, but we have some older plants which are over 15 feet.   The slide show illustrates flower variation between our different seedling plants of R. hyperythrum (most of which were raised from a single "bonus" pack of seed from Esther Berry of the ARS Seed Exchange in the early 1970's).
Jackson McCarter,M.D.  
R. hyperythrum as a parent for heat tolerance and Phytopthera resistance:

Developing Heat Tolerant Rhododendron Hybrids with Disease and Insect Resistance using R. hyperythrum, Stan Southerland
http://scholar.lib.vt.edu/ejournals/JARS/v53n3/v53n3-means.htm
http://www.elkridgegarden.com/research1.html
http://ipps-srna.org/WordPress/wp-content/uploads/2013/12/3B-Krebs-Steven.pdf
http://atlanticrhodo.org/wp-content/uploads/2015/02/Moving-Forward-with-Leach-Hybrids-Halifax-2014-compressed.pdf
https://www.ces.ncsu.edu/fletcher/mcilab/publications/ranney-etal-1995a.pdf
http://www.apsnet.org/meetings/Documents/2012_Meeting_Abstracts/aps12abP248.htm


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