Rhododendron hidaense
Rhododendron hidaense /(R. hyperythrum)
R. hidaense pink, ARS 327/2010 (måske en R. hyperythrum). Foto: Hans Eiberg
R. hidaense pink, ARS 327/2010 (måske en R. hyperythrum). Foto: Hans Eiberg
R. hidaense pink, ARS 327/2010, bladunderside. Foto: Hans Eiberg
R. hidaense pink, ARS 327/2010, hele planten som ligner en R. hyperythrum. Foto: Hans Eiberg
R. hidaense pink, ARS 327/2010 (måske en R. hyperythrum), stamme. Foto: Tønne Tønnesen
R. hidaense pink, ARS 327/2010 (måske en R. hyperythrum), stamme. Foto: Tønne Tønnesen
R. hidaense pink, ARS 327/2010 (måske en R. hyperythrum), stamme. Foto: Tønne Tønnesen
Seeds different/frø forskellige ARS10/ARS11:
R. hidaense ARS10 #327 seeds. Foto: Hans Eiberg
R. hidaense ARS11 #183 seeds?? (hidakanum?). Foto: Hans Eiberg
R. hidaense (er af Tiara i The 1948 Royal Horticultural Society Rhododendron Year Book, s. 126), raporteret
som en hybrid mellem R. degronianum og R. brachycarpum. Imidlertid udviser afkom af R. x hidaense
helt ensartede frøplanter (R. hidaense pink Prefecture Kanagawa, ARS 2010, nr.327).
Frøplanterne led vinteren 2012 af frost, så de er ikke hårdføre selvom moderplanterne er, men de skød igen.
De større planter minder om R. hyperythrum fra Taiwan, idet bladstilken er rødbrun (det har ingen af de foreslåede forældre).
Hans Eiberg
The record derives from WCSP (in review) (data supplied on 2012-03-23) which does not
establish this name either as an accepted name or as a synonym with original publication
details: Enum. Sperm. Jap. 1: 32 1941.
In Zissai-Engei xxvii. 1097 (1941), sine descr. lat.; Hara, Enum. Spermat. Jap., Pt. 1, 32 (1948), in adnot.
http://scholar.lib.vt.edu/ejournals/JARS/v20n3/v20n3-doleshy.htm
With R. degronianum and R. brachycarpum growing in such leaf-rubbing proximity, I looked for
evidence of natural hybridization, but saw none. Also, the young plants since raised from the
collected seed appear entirely distinct. Obviously, crossing would be prevented by a difference
in flowering season, but I am not sure that this is the complete explanation and suspect that
there may be some additional barrier to crossing. (Tiara, in the 1948 Royal Horticultural
Society Rhododendron Year Book, p. 126, states that R. hidaense is considered a hybrid between
these two plants. However, he does not specify that this is a natural hybrid, and I have not
been able to find any other reference to such a hybrid in the literature.)