JARS v60n4 - American Rhododendron Society Plant Registry

American Rhododendron Society Plant Registry

Introduction: The following rhododendron and azalea names were approved and added to the International Rhododendron Register prior to August 15, 2006 by the Royal Horticultural Society, International Cultivar Registration Authority for the genus Rhododendron . The North American Registrar assisted the RHS by providing data for plants originating in North America.

References: Names conform to the rules and recommendations of the International Code of Nomenclature for Cultivated Plants 7th Edition (2004). Color numbers refer to the RHS Colour Chart unless noted otherwise. Accompanying color names are taken from A Contribution toward Standardization of Color Names in Horticulture , R.D. Huse and K.L. Kelly, edited by D.H. Voss (ARS, 1984).

Format: Parentage lists the seed parent first, followed by an "(s)" if the direction of the cross is known; this is followed by an upper case "X" and then the name of the pollen parent. If either parent is itself a cross, the individual components within that cross are separated by a lower case "x". Parentheses are used only in describing the more complex crosses. Abbreviations are used where appropriate: (a) = azalea, (r) = rhododendron, (v) = vireya rhododendron, (z) = azaleodendron; H = hybridized by, G = grown to first flower by, R = raised by, S = selected by, N = named by, I = introduced commercially by, REG = registered by; dates are enclosed in parentheses immediately following the activity. Metric conversions of dimensions are reported in 5mm (0.2") increments for dimensions greater than 25mm (1").

(a) 'Ann Marie': Deciduous azalea: R. viscosum , white-flowered (s) X R. flammeum , red-flowered. H (1997), G (2000), N (2006), and REG (2006): Earl A. Sommerville, Marietta, GA. Fls 7/flat truss, elongated tubular funnel-shaped; 1.4" (35mm) long x 1.4" (35mm) wide, with 5 flat-edged lobes. Color deep pink (48B) in bud, opening inside with a white tube, the lobes deep pink (48B) with a white streak extending from the apex of each lobe into the white tube, and the dorsal lobe overlaid with a pale yellow blotch; the outside is similar without the blotch; dark red exserted stamens and pistil. Calyx lobes c 0.4" (10mm) long, grayish yellow green (148C). Truss 2" (50mm) high x 2.5" (65mm) wide. Lvs 1.8" x 1.2" (45 x 30mm), obovate, broadly acute apex, rounded base, flat margins; semi-glossy and moderate yellowish green (136C) above. Shrub 4' (1.2m) high x 3' (0.9m) wide in 8 years; intermediate habit. Plant hardy to at least -5F (-21C). Late May.

(a) 'Earl's Angel': Deciduous azalea: Natural hybrid of R. flammeum , possibly with R. periclymenoides . Wild-collected (1962) at Allatoona Lake, GA; N, and REG (2006): Earl A. Sommerville, Marietta, GA. Fls 9/flat truss, tubular funnel-shaped with exserted stamens and pistil; 1.5" (40mm) long x 1.5" (40mm) wide, with 5 frilly-edged lobes. Color strong purplish pink (62A) in bud, opening inside strong purplish pink (63C) edged white, with a large, brilliant yellow (13C) dorsal blotch; outside moderate purplish pink (65A), the tube strong purplish red (64C). Calyx lobes c 0.4" (10mm) long, strong yellow green (143C). Truss 2.2" (55mm) high x 3" (75mm) wide. Lvs 3" x 1.2" (75 x 30mm), elliptic, acute apex, cuneate base, flat margins; dull and moderate olive green (147A) above. Shrub 8' (2.4m) high x 4' (1.2m) wide in 44 years; open habit. Plant hardy to at least -5F (-21C). Mid April.

(a) 'Ed Stephens': Deciduous azalea: Parentage unknown. S (c 1995): Edward Stephens, Cobb County, GA; G (1999), N (2006), and REG (2006): Earl A. Sommerville, Marietta, GA; I (2006): Mountain Shadow Nursery, Olympia, WA. Fls 18/ball to dome truss, tubular funnel-shaped with exserted stamens and pistil; 1.5" (40mm) long x 1" (25mm) wide, with 5 wavy-edged lobes. Color strong red (47B) throughout; unmarked. Calyx lobes 1.2" (30mm) long, moderate yellow green (148B). Truss 2.8" (70mm) high x 3.8" (95mm) wide. Lvs 1.8" x 1.2" (45 x 30mm), elliptic, broadly acute apex, cuneate base, up-curved margins; dull and moderate yellow green (146B) above. Shrub 4' (1.2m) high x 4' (1.2m) wide in 10 years; intermediate habit. Plant hardy to at least -5F (-21C). Late May.

(a) 'Jack Melton': Deciduous azalea: R. flammeum . Wild collected (early 1990s) in central GA: Jack Melton, Cobb County, GA; N (2006) and REG (2006): Earl A. Sommerville, Marietta, GA. Fls 15/flat truss, elongated tubular funnel-shaped; 1.5" (40mm) long x 1.5" (40mm) wide, with 5 wavy-edged lobes; stamens and pistil exserted. Color vivid red (45A) in bud, opening vivid red (45A) throughout; unmarked. Calyx lobes c 0.4" (10mm) long, strong yellow green (144B). Truss 2.2" (55mm) high x 3" (75mm) wide. Lvs 2.5" x 1" (65 x 25mm), obovate, broadly acute apex, cuneate base, flat margins; glossy and moderate yellow green (137C) above. Shrub 6' (1.8m) high x 4' (1.2m) wide in 11 years; open habit. Plant hardy to at least -5F (-21C). Early.

(a) 'Jake's Gem': Deciduous azalea: R. flammeum . Wild collected (1995), N (2006) and REG (2006): Earl A. Sommerville, Marietta, GA. Fls 13/flat truss, elongated tubular funnel-shaped, with exserted stamens and pistil; 2" (50mm) long x 1.8" (45mm) wide, with 5 flat-edged lobes. Color strong red (46A) in bud, opening strong red (46A) throughout; unmarked. Calyx lobes c 0.4" (10mm) long, strong red (46A). Truss 2.4" (60mm) high x 4.5" (115mm) wide. Lvs 2.8" x 1.5" (70 x 40mm), obovate, obtuse apex, cuneate base, wavy margins; semi-glossy and moderate olive green (146A) above. Shrub 4' (1.2m) high x 4' (1.2m) wide in 10 years; intermediate habit. Plant hardy to at least -5F (-21C). Mid April.

(a) 'John Conner': Deciduous azalea: R. prunifolium . Wild collected (c 1985) in Harris County, GA; N (2006), and REG (2006): Earl A. Sommerville, Marietta, GA. Fls 16/ball to dome truss, tubular funnel-shaped with exserted stamens and pistil; 1" (25mm) long x c 1" (25mm) wide, with 5 wavy-edged lobes. Color vivid reddish orange (44B) in bud, opening the same color throughout; unmarked. Calyx lobes c 0.4" (10mm) long, grayish yellow green (148C). Truss 2.4" (60mm) high x 3" (75mm) wide. Lvs 1.5" x 1" (40 x 25mm), elliptic, broadly acute apex, cuneate base, flat margins; dull and moderate yellow green (146D) above. Shrub 10' (3.0m) high x 10' (3.0m) wide in 20 years; intermediate habit. Plant hardy to at least -5F (-21C). Late July.

(a) 'Kate': Deciduous azalea: R. austrinum . Wild collected (early 1980s), G (c1987), N (2006), and REG (2006): Earl A. Sommerville, Marietta, GA. Fls 16/flat truss, tubular funnel-shaped, with exserted stamens and pistil; 1.8" (45mm) long x c 1.5" (40mm) wide, with 5 wavy-edged lobes. Color moderate red (180B) in bud, opening inside strong orange yellow (24B) lightly tinged red, the dorsal lobe vivid orange yellow (23A); outside similar but with red veins on lobes; stamens strong orange yellow (24B) lightly tinged red; pistil red. Calyx lobes c 0.4" (10mm) long, vivid reddish orange (43A). Truss 2" (50mm) high x 3.5" (90mm) wide. Lvs 1.8" x 0.6" (45 x 15mm), elliptic, broadly acute apex, cuneate base, up-curved margins; dull and moderate yellow green (146C) above. Shrub 7' (2.1m) high x 5' (1.5m) wide in 20+ years; intermediate habit. Plant hardy to at least -5F (-21C). Early.

(a) 'Lemon Lush': Deciduous azalea: Natural hybrid of R. flammeum . Wild-collected (1994), G, N (2006) and REG (2006): Earl A. Sommerville, Marietta, GA. Fls 38/ball truss, elongated tubular funnel-shaped, with exserted stamens and pistil; 1.5" (40mm) long x 1.5" (40mm) wide, with 5 frilly-edged lobes. Color brilliant yellow (15C) in bud, opening the same color throughout, the dorsal lobe with a vivid yellow (17B) blotch. Calyx lobes c 0.4" (10mm) long, moderate yellow green (138B). Truss 3.5" (90mm) high x 4.4" (110mm) wide. Lvs 1.5" x 0.6" (40 x 15mm), elliptic, broadly acute apex, cuneate base, up-curved margins; dull and moderate yellow green (146C) above. Shrub 5' (1.5m) high x 3' (0.9m) wide in 8 years; intermediate habit. Plant hardy to at least -5F (-21C). Early.

(a) 'Magenta Rose Flame': Deciduous azalea: R. flammeum . Wild collected (early 1980s) near Milledgeville, GA: Ed Stevens, Cobb County, GA; G (1992), N (2005) and REG (2006): Earl A. Sommerville, Marietta, GA. Fls 22/dome truss, elongated tubular funnel-shaped, with exserted stamens and pistil; 1.5" (40mm) long x 1.5" (40mm) wide, with 5 frilly-edged lobes. Color inside light reddish purple (74C), the dorsal lobe with a brilliant orange (25C) blotch bisected by a deep yellowish pink (43C) streak; outside light reddish purple (74C). Calyx lobes c0.6" (15mm) long, light reddish purple (74C). Truss 2.8" (70mm) high x 3.5" (90mm) wide. Lvs 2" x c 0.6" (50 x 15mm), lanceolate, acute apex, cuneate base, upcurved margins; dull and moderate yellow green (146C) above. Shrub 8' (2.4m) high x 5' (1.5m) wide in 13 years; intermediate habit. Plant hardy to at least -5F (-21C). Early.

(a) 'Razzberry': Deciduous azalea: Natural hybrid of R. flammeum , possibly with R. periclymenoides . Wild-collected (1962) at Allatoona Lake, GA; N (pre 2003), and REG (2006): Earl A. Sommerville, Marietta, GA; I (2003): RareFind Nursery, Jackson, NJ. Fls 9/flat truss, tubular funnel-shaped with exserted stamens and pistil; 1.5" (40mm) long x 1.5" (40mm) wide, with 5 wavy-edged lobes. Color strong purplish red (63A) in bud, opening inside moderate red (47A), the dorsal lobe light orange yellow (22B) bisected by a moderate red (47A) streak; outside moderate red (47A). Calyx lobes c0.2" (5-6mm) long, strong yellow green (143C). Truss 1.8" (45mm) high x 3.2" (80mm) wide. Lvs 3.2" x 1.2" (80 x 30mm), elliptic, acute apex, cuneate base, wavy margins; dull and moderate olive green (147A) above. Shrub 4' (1.2m) high x 4' (1.2m) wide in 44 years; open habit. Plant hardy to at least -5F (-21C). Mid April.

(a) 'Sommerville's Pink': Deciduous azalea: R. flammeum . Wild-collected (early to mid 1980s) near Griffin in Spalding County, GA; N (2006), and REG (2006): Earl A. Sommerville, Marietta, GA; I: Mountain Shadow Nursery, Olympia, WA. Fls 15/flat truss, elongated tubular funnel-shaped, with exserted stamens and pistil; 1.5" (40mm) long x c 1.5" (40mm) wide, with 5 flat-edged and star-shaped lobes. Color vivid purplish red (65A) in bud, opening inside and out light purplish pink (73C), with a moderate purplish pink (74D) tube; unmarked. Calyx lobes c 0.4" (10mm) long, moderate purplish red (186B). Truss 2.5" (65mm) high x 3.2" (80mm) wide. Lvs 2.5" x 1" (65 x 25mm), elliptic, acuminate apex, cuneate base, up-curved margins; semi glossy and moderate yellowish green (138A) above. Shrub 9' (2.7m) high x 6' (1.8m) wide in c 20 years; open habit. Plant hardy to at least -5F (-21C). Early-mid April.

(a) 'Sommerville's Sunrise': Deciduous azalea: Natural hybrid of R. austrinum . Wild-collected (c 1980), N (pre 2006), and REG (2006): Earl A. Sommerville, Marietta, GA. Fls 26/ball to dome truss, tubular funnel-shaped with exserted stamens and pistil; 1.4" (35mm) long x 1.4" (35mm) wide, with 5 frilly-edged lobes. Color pale yellow (18C) lobes with a very light pink tube and a red pistil. Calyx lobes 0.8" (20mm) long, grayish yellow green (148C). Truss 3" (75mm) high x 4" (100mm) wide. Lvs 2.5" x 1.4" (65 x 35mm), elliptic, broadly acute apex, cuneate base, flat margins; dull and moderate yellow green (146D) above. Shrub 8' (2.4m) high x 8' (2.4m) wide in 25 years; dense habit. Plant hardy to at least -5F (-21C). Early.

(a) 'Vivian Abney': Deciduous azalea: Parentage unknown. Wild-collected, open-pollinated seedling (mid 1980s): G (mid 1980s), N (2006) and REG (2006): Earl A. Sommerville, Marietta, GA. Fls 16/flat truss, tubular funnel-shaped, with exserted stamens and pistil; 1.5" (40mm) long x c 1.4" (35mm) wide, with 5 wavy-edged lobes. Color deep purplish pink (54B) in bud, opening inside strong purplish pink (55B) with slightly lighter pink stripe down center of each lobe and a conspicuous light orange yellow (19A) dorsal blotch; outside light purplish pink (55C). Calyx lobes c 0.2" (5mm) long, grayish yellow green (194B). Truss 1.5" (40mm) high x 3.5" (90mm) wide. Lvs 3" x 1.4" (75 x 35mm), elliptic, broadly acute apex, cuneate base, flat margins; semi-glossy and moderate yellow green (146B) above. Shrub 4.5' (1.4m) high x 6' (1.8m) wide in c 15 years; intermediate habit. Plant hardy to at least -5F (-21C). Early.

Additions and Corrections:
'Shelia Gay' : ( published in Journal ARS, Vol. 59, No 4 Fall 2005 ); Grown from ARS Seed Exchange Lot 93-677, hybridized by Max E Byrkit, Hagerstown, MD. (Data supplied by the registrant, J.D. Hooper, Uniontown, OH.)