Rhododendron calendulaceum

subsp. var.
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Standard Cyclopedia of Horticulture

Rhododendron calendulaceum, Torr. (R. luteum, Schneid., not Sweet. Azalea calendulacea, Michx. A. lutea, Linn., partly. A. aurantiaca, Dietr. A. speciosa, Willd.). Flame-Colored Azalea. From 4-10 ft.: branchlets glabrous or with stiff hairs: lvs. obovate or ovate, usually pubescent beneath, serrulate-ciliate : fls. orange-yellow to orange-red or flame-red, often 2 in. broad, with the lvs., nearly scentless; tube usually shorter than the limb; stamens thickened at the middle. May, June. E. N. Amer. C.L.A. 11:496. Gn. 29, p. 550. B.R. 145. L.B.C. 7:624. B.M. 180. Var. croceum, Rehd. Fls. yellow or orange-yellow. B.M. 1721. L.B.C. 14:1324.—One of the most showy species. The above text is from the Standard Cyclopedia of Horticulture. It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article. Click on "Collapse" in the header to hide this text.

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References

• Standard Cyclopedia of Horticulture, by L. H. Bailey, MacMillan Co., 1963

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