R. pemakoense
See Cover Article

The Quarterly Bulletin
of the
American Rhododendron Society

April 15, 1964
Vol. 18 No. 2

Published quarterly by the AMERICAN RHODODENDRON SOCIETY, 3514 N. Russet St., Portland. Ore, Membership subscription to the American Rhododendron Society $5.00 a year. The Quarterly Bulletin of the American Rhododendron Society is included as a benefit of membership. Copyright 1964 by the American Rhododendron Society. Permission to reprint any portion of this volume must be granted in writing by the Society

Issue Contents
The Effect of Phosphorus on Rhododendron Flower Bud Formation by Arthur Myhre and W. Mortensen		An Addition to the Yak About yakusimanum by David G. Leach
Amateur Rhododendron Propagation Techniques by John G. Lofthouse		Hybrids of Rhododendron yakushimanum by Robert Adams
The Species Situation in the U. S. A. by J. Harold Clarke		More About Rhododendrons in Southern Red Clay by Charles A. Dewey Jr.
Cover Article
Study of Hair Types in Rhododendrons by Dr. Alexander Martin		Further Comments on Azalea Species by S. D. Coleman
The Ralph Van Landingham Garden by Charles A. Dewey Jr.		The Case for R. 'Rosa Mundi' by Ruth Jacobson
We've Gone to Seed by Esther Berry		Growing Rhododendrons in the Southeast
ARS Plant Registry		Rhododendron Ratings
Bonsai		Rhododendrons for New England
Growth Retardants		A Note from Japan
Rhododendrons in Czechoslovakia		Show Announcements
What's Going On In The World Rhododendron News From Here And There		Book Notes: The Rhododendron Handbook, Part I, The Rhododendron and Camellia Yearbook, 1964
By-Laws		Advertisements

OFFICERS
President	Vice President
E. B. DUNN	CARL H. PHETTEPLACE, M.D.
Secretary-Treasurer	Executive Vice President and Editor
RUTH M. HANSEN	DR. J. HAROLD CLARKE

BOARD OF DIRECTORS

MRS. ROBERT BERRY, Aberdeen, Wash., Term expires 1965

JAMES P. BERRY, JR., Margate, N.J., President Philadelphia Chapter

SIDNEY V. BURNS, Syosset, L. I., N.Y., President New York Chapter

MERLE E. CISNEY, Camas, Wash., Term expires 1965

ROY W. CLARK, Olympia, Wash., President Olympia Chapter

R. E. COMERFORD, Marion, Ore., Term expires 1965

E. F. DRAKE, Port Townsend, Wash., President Olympic Peninsula Chapter

JOHN EICHELSER, Olympia, Wash., President Tacoma Chapter

ARTHUR ELLIOTT, Otter Lake, Mich., President Great Lakes Chapter

CARL FAWCETT, Tacoma, Wash., Term expires 1964

HENRY FLEMING, Upper Nyack, N.Y., President Tappan Zee Chapter

DAVID FREEMAN, Vancouver, B.C., President Vancouver B.C. Chapter

GEORGE GRACE, Portland, Ore., Term expires 1964

LOUIS C. GROTHAUS, Portland, Ore., President Portland Chapter

C. T. HANSEN, Portland, Ore., Term expires 1964

PAUL N. HARRIS, M.D., Indianapolis, Ind., President Indianapolis Chapter

JOHN HENNY, Brooks, Ore., Term expires 1964

DR. F. W. HERRICK, Shelton, Wash., President Shelton Chapter

DR. LEON J. HEUSER, Princeton, N.J., President Princeton Chapter

CHRIS JOHNSON, Mercer Island, Wash., President Seattle Chapter

ALFRED F. KELLY, Middletown, N.J., President Mid-Jersey Chapter

EDWARD H. LONG, Oakland, Calif., President California Chapter

KENNETH MARSHALL, Aberdeen, Wash., President Grays Harbor Chapter

DONALD MCCLURE, Seattle, Wash., Term expires 1964

DALE MCCURDY, Aurora, Ill., President Midwest Chapter

EVERETT MITCHELL, Asheville, N. C., President Southeastern Chapter

FRED REES, Wyckoff, N. J., President New Jersey Chapter

CECIL SMITH, Aurora, Ore., Term expires 1964

DR. ROBERT L. TICKNOR, Canby, Ore., Term expires 1965

MERVIN B. VATER, Eugene, Ore., President Eugene Chapter

MILTON V. WALKER, M.D., Creswell, Ore., Term expires 1965

THOMAS WHEELDON, M.D., Richmond, Va., President Middle Atlantic Chapter

ADVERTISING RATES FOR THE A.R.S. BULLETIN Copy should be received by the 15th of the month preceding date of publication
FULL PAGE	One-Time Rate  $35.00	Four-Time Rate  $125.00
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Advertising information, The Editor, Dr. J. Harold Clarke, Long Beach, Wash.