Subsection Ledum
.
● = på listen over truede arter (The Red List of Rhododendrons)
● = ikke på listen over truede arter
Subsection Ledum
R. columbianum (Piper) Harmaja, 1990. (2N)
R. diversipilosum (Nakai) Harmaja, 1999. (4N)
R. groenlandicum (Oeder) Kron & Judd, 1990. (4N)
R. hypoleucum (Kom.) Harmaja, 1990. (4N)
R. neoglandulosum Harmaja, 1990. (4N)
R. subarcticum Harmaja, 1990. (2N)
R. subulatum (Nakai) Harmaja, 2002. (2N)
R. tolmachevii Harmaja, 1990. (4N)
R. tomentosum Harmaja, 1990. (4N)
DNA conncentration (ploidy N) by João Loureiro, Portugal.
R. columbianum is indeed a diploid species
Robert MacIntyre provided us with another sample of R. columbianum. It appears that R. columbianum is indeed a diploid species and is the not a hybrid of the other 2 western Ledum‘s that both tested as tetraploid.
John Perkins
Ledum Taxonomy Kristian Theqvist (se omtalen om L. palustre)
Bestemmelsesnøgle i Spring Issue JARS 2011
Ledum nøgle på Dansk
