Rhododendron cumberlandense

R. cumberlandense (bakeri) yellow-red at HE,HE
R. cumberlandense (bakeri) red at GF Petersen, GFP


Naturlige hybrider: R. x furbishii
'Calendulaceum Dwarf', Dr Jenkins Natural Hyb. Crow Mt., Earl Sommerville
R. cumberlandense? x arborescens 'Furbishii' Pink Plush - Furbishii from Tadesz Dauksza
R. cumberlandense x arborescens Arborescens yellow, from Gable

R. cumberlandense (Pentanthera) ( -20 C) Danner en kompakt lav og tætforgrenet, løvfældende busk, som ofte breder sig med rodudløbere. Arten er nært beslægtet med R. calendulaceum og kommer fra det østlige Nordamerika. På sit hjemsted i bjergene er den normale blomsterfarve blodrød eller dyb skarlagenrød, medens den i kultur oftest er orangerød . Blomsten er uden duft og kommer i juni-juli. Smuk høstfarve. Dyrkes bedst på åben vokseplads. Tue Jørgensen
Adskilder sig fra R. calendulaceum på knopskældene, idet sidstnævnte ikke har børstehår på vækstknopperne, vokser kraftigere og blomstrer tidligere. Vokser til en mellemhøj plante med en flad top. (kan være gul i kronen) R. bakeri blev navngivet til en hybrid (efter sigende) så navnet er illegitimt. Hans Eiberg.
R. calendulaceum H. Eiberg

---

R x furbishii I (Mike Creel) found something from Gustav Melquist regarding R. furbishii. He actually recreated what seems to be furbishii through crossing R. bakeri with aborescens.
Among the azaleas that I've been interested in largely are two groups. First of all, I was interested in David Leach's statement to the effect that Furbishi [Rhododendron x furbishii] is probably a hybrid between [R.] bakeri [now R. cumberlandense] and probably R. arborescens. I checked Lee's book on azaleas [The Azalea Book. Frederic P. Lee. 2nd ed. Princeton, NJ: Van Nostrand, 1965.] and he suggests that probably the parentage is either bakeri with arborescens or bakeri with a late blooming R. calendulaceum.
It is more likely that "furbushii" is bakeri x arborescens, calendulaceum doesn't easily cross with anything.There is some nudiflorum (periclymenoides) up at those altitudes, and that is similar to canescens. Charles Hunter
The Breeders Talk:Dr. Gustav A. L. Mehlquist, 1975
R. x fubishii on 'www.rosebay.org'

---

RSBG ARS Flora of North America D. Genbank
Don. Hyatt homepage ASA
Naturhybrider:
Naturhybrider på Gregory Bald

---

---

R. bakeri (Lemon, 1938) is a hybrid or not? perhaps not
Pages 309-311 in the Kron article contain the write up on Rhododendron cumberlandense E. L Braun, Rhodora 43: 33 (1941) Syn: Azalea cumberlandense (E.L. Braun) Copeland, Am. Midl. Nat. 30: 533-625 (1943). Type: Kentucky, McCreary Co.: Yahoo Ridge, 15 vi 1935, E.L. Braun 971 (holo. Herb. Braun, n.v.; iso A). On page 310: "The name R. bakeri (Lemon, 1938) has been used for this diploid flame azalea since Skinner (1955) considered R. bakeri to be the same taxon as R. cumberlandense.. Since R. bakeri, was an earlier name, it was properly used over R. cumberlandense. However, the type specimen of Azalea bakeri (=R. bakeri) is not at all similar to the type or R. cumberlandense. The specimen which is labeled Azalea bakeri by Lemmon, has young expanding leaves, which are densely pubescent on the abaxial surface. In addition, the margins of the floral bud scales are all unicelular-ciliate, and the corolla possesses both glandular and eglandular multicellular hairs. None of the above characters is found in R. cumberlandense, which flowers well after the leaves have expanded and usually has glabrous leaves (never densely pubescent). In addition, the floral bud-scale margins and the outer surface of the corolla are consistently glandular in R. cumberlandense.
Therefore Lemmon's specimen is probably a hybrid between R. flammeum and R. canescens (see hybrid names, p. 362). Thus, the correct name for the diploid form of flame azalea is Rhododendron cumberlandense."

No expert here, but I have seen a fair number of natural hybrids between R. flammeum and canescens growing in the wild here in north Georgia and they do not look like what I know as bakeri. The natural hybrids I have seen are a raspberry dark pink color, sometimes with a blotch (very attractive) but not orange.Charles Hunter, Georgia
In 1938 Lemmon and McKay applied the name Azalea bakeri to a small population of azaleas found in Union County, Georgia, and described its province as the Blue Ridge Mountains of Georgia and North Carolina at elevations above 3,000 ft. Hume (1948) subsequently transferred the epithet bakeri to the genus Rhododendron. I don't believe a hybrid of R. flammeum x R. canescens would survive in zone 5-6a. I would like to learn if there are folks who are growing authentic bakeri (is it correct to drop the R. now?) who might expand on the key morphological difference between Lemon's herbarium specimen (bakeri) and the true species R. cumberlandense. Has any Yahoo Rhodo member from the north attempted to grow bakeri? Bruce Clyburn

In Union County that is the mountains of North Georgia near TN. and S.C. and probable 2500', in the winters past it has be down to - 20 below zero in that area and Flammeum are Canescens will not take that temp. The plant that is label "Dr Jenkins Dwarf Calendulaceum from Crow Mountain" Is my label so I will know were this plant came from. "Dr Jenkins collected from Crow Mountain" After the plant bloom for threes year It was noted it was not a Calendulaceum. The color is more pink than the photo and it blooms later than the up -land Calendulaceum by at least three weeks, The plant is 3' after eight years and grows like a Bakeri also I still like the name Bakeri over Cumberlandence. In this area they are at least five or six species that grow side by side in the same colonys will have bloom two or three times a year on two weeks intervals. This is all mother natural doings just enjoy the flowers. Earl Sommerville