JARS v64n4 - 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 3, 2010 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 - 8th Edition (2009). 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 1" (25mm).

(r) 'Candycorn': Elepidote rhododendron: ('Nancy Evans' x 'Orange Marmalade') (s) X ('Orange Marmalade' x 'Lem's Cameo'). H (2001), G (2006), N (2008), and REG (2010): Don S. Wallace, McKinleyville, CA; I (2010): Singing Tree Gardens Nursery, McKinleyville, CA. Fls 15/dome truss, funnel-campanulate, 2" (50mm) long x 2.5" (65mm) wide, with 5 wavy-edged lobes. Color vivid red (45B) in bud, opening inside brilliant yellow (15C) shading to deep yellowish pink (44D) edges, with strong red (46A) nectar pouches; outside brilliant yellow (15C) towards base shading to deep yellowish pink (44D) towards edges; unmarked. Calyx lobes 0.8" (20mm) long, light greenish yellow (8B). Truss 4" (100mm) high x 6" (150mm) wide. Lvs held 2 years; 4" x 1.8" (100 x 45mm), elliptic, broadly acute apex, cuneate base, flat margins; glossy and strong green (132B) above; hairless. Shrub 2' (0.6m) high x 2.5' (0.8m) wide in 10 years; intermediate habit. Plant hardy to at least 0°F (-18°C); buds, 5° F (-15° C). Flowering mid May.

(r) 'Chemainus': Elepidote rhododendron: 'Noyo Brave' (s) X [('C.I.S.' x R. rex ) x 'Hansel']. H (1985), G (1992), N (2010), and REG (2010): Frank Fujioka, Freeland, WA. Fls 18/dome truss, funnel-campanulate, 2" (50mm) long x 3" (75mm) wide, with 5 wavy-edged lobes. Color vivid red (52A) in bud, opening inside deep purplish pink (55A) with deep red (53A) spots on upper dorsal lobe becoming solid near throat; outside deep pink (52C); color fades with age. Calyx lobes 1" (25mm) long, strong pink (52D). Truss 4" (100mm) high x 5" (125mm) wide. Lvs held 3 years; 6" x 2" (150 x 50mm), elliptic, broadly acute apex, rounded base; glossy and dark bluish green (131A) above. Hairy indumentum on entire underside of lvs, and slight silvery tomentum above; color of indumentum moderate orange yellow (164B) when young, moderate orange yellow (165C) when mature. Shrub 4' (1.2m) high x 4.5' (1.4m) wide in 10 years; dense habit. Plant hardy to at least 10°F (-12°C); buds, 5°F (-15°C). Flowering early season.

(a) 'Double Talk': Deciduous azalea: 'Homebush' (s) X unknown. H (?1970s), G (1978), and N (1980): John Neal, Frederick, MD; REG (2010): Mary L. Reiley, Woodsboro, MD. Fls 12/dome truss, narrowly funnel-shaped, 2" (50mm) long x 3" (75mm) wide, with 11-12 frilly-edged lobes.; stamens exserted 1" (25mm) beyond corolla. Color vivid reddish orange (34B) with vivid yellow (14A) midribs in bud, opening inside light orange yellow (16B), suffused strong reddish orange (34C); outside similar to inside with the addition of vivid yellow (14A) midribs and a green base; unmarked; stigma: bright green. Calyx lobes c 0.1" (3mm) long, pale green. Truss 3.2" (80mm) high x 6" (150mm) wide. Lvs 2"-2.5" x 1" (50-65 x 25mm), elliptic, acute apex, cuneate base, down curved margins; semi-glossy and moderate yellow green (137C) with bronze overtones above; leaves hairy (colorless) above and below. Shrub 7'-8' (2.1-2.4m) high x 3-4' (0.9-1.2m) wide in 15 years; open habit. Plant hardy to at least -15°F (-26°C); buds, -10°F (-23°C). Flowering early April.

(r) 'Ed Reiley's Delight': Elepidote rhododendron: 'Helen Everitt' (s) X 'Harvest Moon'. H (1960s): possibly A.M. Shammarello, Euclid, OH or J.B. Gable, Stewartstown, PA ; G (1960s): H. Edward Reiley, Woodsboro, MD; N (2010) and REG (2010): Mary L. Reiley, Woodsboro, MD. Fls 7-9/dome truss, broadly funnel-shaped, 2.5" (65mm) long x 3.5" (90mm) wide, with 6 wavy-edged lobes; strongly scented. Color greenish white (155C) in bud, opening inside yellowish white (155D) with a basal blotch of light yellow green and a few reddish brown streaks c 0.4"-0.6" (10-15mm) long; outside yellowish white (155D); stigma: strong yellow green (144A); style: strong yellow green (145A); ovary: strong yellowish green (141C). Calyx lobes c 0.1"- 0.25" (3-6mm) long, strong yellow green (144B). Truss 4.5" (115mm) high x 5.5"-6" (140-150mm) wide. Lvs held 3 years; 3.5"-4" x 1.8" (90-100 x 45mm), oblong, obtuse apex, rounded base, flat margins; semi-glossy and moderate olive green (137A) above, veins strong yellow green (143C); hairless. Shrub 6' (1.8m) high x 8' (2.4m) wide in 40 years; intermediate habit. Plant hardy to at least -15°F (-26°C); buds, -10° F (-23° C). Flowering April to May.

(r) 'Gordon's Trophy': Elepidote rhododendron: R. yakushimanum (s) X unnamed Lem hybrid (known in the Heyduck garden as Gorden's Lem No. 1). H (1972), G (1977): Gordon Heyduck, Bellevue, WA; N (1982): Clint Smith, Orting, WA; I and REG (2010): Don Smart, Carnation, WA. Fls 14/flat truss, funnel-campanulate, 2" (50mm) long x 2.5" (65mm) wide, with 5 wavy-edged lobes. Color opening inside pale orange yellow (19D), with dorsal lobes pale yellow (19C), all lobes blending to pale purplish pink (56B) 0.25" (c 5-6mm) from the margins; outside pale orange yellow (19D), with pale purplish pink (56B) midribs; moderate orange yellow (164C) spotting on dorsal lobe, extending 1.5" (40mm) from base. Over time, flowers fade to creamy white with pink highlights. Length of calyx lobes irregular, varying to 1.3" (40mm) long, pale orange yellow (19D). Truss 4" (100mm) high x 6" (150mm) wide. Lvs held 3 years; 4.3" x 1.9" (110 x 50mm), elliptic, broadly acute apex, cuneate base, down curved margins; semi-glossy and moderate olive green (147A) above; hairy indumentum on underside of lvs and on petioles. Indumentum color grayish yellow green (148D) when young, grayish yellow green (195B) when mature. Shrub 3' (0.9m) high x 3' (0.9m) wide in 10 years; intermediate habit. Plant hardy to at least 0°F (-18°C). Flowering late April.

(v) 'Jean Curtis': "  Vireya (lepidote) rhododendron: 'Anacapa' (s) X 'Clare Elsie'*. H (2000): William Moynier, Los Angeles, CA; G (2004), and N (2009): Sherla Bertelmann and Richard Marques, Kea'au, HI; REG (2010): Richard Kruppa, Volcano, HI; I (2009): Pacific Island Nursery, Kea'au, HI. Fls 9-12/dome truss, elongated tubular funnel-shaped, 3.6" (90mm) long x 3.6"-4" (90-100mm) wide, with 5-6 flat-edged lobes. Color dark reddish purple in bud, opening deep purplish pink (58D), edged strong purplish red (58B), with the tube becoming lighter to pale purplish pink (56C) and finally yellowish pink at the base; outside is similar except that the base becomes yellowish green; no markings; stigma: dark red; style: red/very dark pink; anther; dark red; filament: pink merging into cream. Truss 4.5" (115mm) high x 8" (200mm) wide. Lvs 6.6" x 2.8" (165 x 70mm), elliptic, broadly acute apex, cuneate base, upcurved margins; glossy and moderate yellow green (137A) above; strong to moderate yellow green (144A-146B) below; no indumentum visible. Shrub 3' (0.9m) high x 2' (0.6m) wide in 6-8 years; dense, upright habit; slow-growing. Plant and bud hardy to at least 38°F (3°C). Flowering May-June and January-February.

(r) 'Luscious Lora': Elepidote rhododendron: R. fortunei (s) X 'Caractacus. Seed purchased (1960s) from F.W. Schumacher Co., Sandwich, MA; G (1974), N (2007): H. Edward Reiley, Woodsboro, MD; REG (2010): Mary L. Reiley, Woodsboro, MD. Fls 9-11/dome truss, broadly funnel-shaped, 2.2" (55mm) long x 3" (75mm) wide, with 6 wavy-edged lobes; moderately scented. Color of buds strong purplish red (63B) edged light purplish pink (63C), opening inside pale purplish pink (62D) edged light purplish pink (63C), the throat strong purplish red (64A) with strong purplish red (64B) speckles extending upwards a short distance between lobes; outside light purplish pink (62C) with light purplish pink (63C) midribs; stigma: moderate brown (165A); style: light yellow green (144D); ovary: strong yellow green (144A). Calyx lobes c 0.1" (3mm) long, brilliant yellow green (149A). Truss 4" (100mm) high x 5.5" (140mm) wide. Lvs held 4 years; 5"-5.5" x 2.5" (125-140 x 65mm), oblong, obtuse apex, rounded base, upcurved margins; semi-glossy and moderate olive green (137B) above, veins strong yellow green (144A); new lvs very glossy; hairless. Shrub 8' (2.5m) high x 10' (3.1m) wide in 30 years; intermediate habit. Plant hardy to at least -15°F (-26°C); buds, -10° F (-23° C). Flowering early May.

(r) 'Ned's Number One': Elepidote rhododendron: R. yakushimanum (s) X ( R. fortunei ssp. discolor x R. catawbiense ). H (1960), G (1966), and N: Ned Schrope, Hegins, PA; I (2005): Brouse Nursery, Norristown, PA; REG (2010): Frank Brouse, Norristown, PA. Fls 13/lax ball truss, funnel-shaped, c 1.5"-2" (40-50mm) long x c 1.5"-2.2" (40-55mm) wide, with 5 frilly-edged lobes. Color pink in bud, opening very light pink with a light yellow dorsal blotch. Calyx lobes c 0.2" (5mm) long, tan. Truss 3" (75mm) high x 4" (100mm) wide. Lvs held 2 years; 4" x 1" (100 x 25mm), elliptic, apiculate apex, cuneate base, upcurved margins; dark green above; hairless. Shrub 2' (0.6m) high x 3' (0.9m) wide in 6 years; dense habit, well-branched, sun-tolerant. Plant and bud hardy to at least -15°F (-26°C). Flowering mid May.

(r) 'SpringGold': Lepidote rhododendron: 'Saffron Prince' (s) X R. dalhousiae . H (1992), G (1998), N (2010) and REG (2010): William Moyles, Oakland, CA; I (2000). Enjoy Rhododendrons, Occidental, CA. Fls 6/rounded truss with a flattened crown, openly funnel-shaped, 3"-3.2" (c 75-80mm) long x c 3.5" (c85-90mm) wide, with 5 wavy-edged lobes. Color cinnamon red in bud, opening inside medium saffron yellow with occasional small, pale red markings on the lobes and a basal blotch of dark saffron to red; outside medium saffron yellow. Calyx lobes c0.1" (3mm) long, pale green. Truss 4" (100mm) high x 7" (175mm) wide. Lvs 3.5" x 1.5" (90 x 40mm); oblong, broadly acute apex, rounded base, flat margins; semi-glossy and deep green above; scales on underside of lvs. Shrub 4' (1.2m) high x 4' (1.2m) wide in 10 years, intermediate habit; foliage covered completely with flowers. Hardiness of plant and bud estimated to be at least 20°F (-7°C). Early April. (Synonym: 'The Winner') (The following awards were received at California Chapter, ARS shows: (1) trophy, Best New Hybrid (1999); (2) trophy, Paul and Ruby Bowman award (2009), (3) Blue Ribbon (2010) for hybrid derived from Subsection Maddenia.)

(v) 'Thirtieth of June': Vireya (lepidote) rhododendron: R. leucogigas (s) X ( R. konori x R. laetum ). H (1973), G (1979), and N (c 1979): Peter Sullivan, San Francisco, CA; I (2004): Pacific Island Nursery, Kea'au, HI; REG (2010): Richard Kruppa, Volcano, HI. Fls 7/flat truss, elongated tubular funnel-shaped with a straight tube; 5" (125mm) long x 4" (100mm) wide, with 7 wavy-edged lobes. Color reddish purple in bud, opening off-white (close to pale yellowish pink (159D)) throughout with streaks of moderate to light to pale pink (close to 49B-D) on the outside of the tube; with a small, strong pink (49A) spot inside at each sinus; anther: white; filament: very pale pink; stigma: very light green; style: mainly white except red immediately below the stigma. Truss 4" (100mm) high x 10" (250mm) wide. Lvs 6.8"-7" x 2.8"-3" (170-175 x 70-75mm), elliptic, broadly acute apex, cuneate base, upcurved margins; glossy and moderate olive green (147A) above; dull and moderate yellow green (146B) below; no indumentum visible. Shrub 2.4' (0.7m) high x 1.3'-1.7' (0.4-0.5m) wide in 6 years; open, upright habit; very slow-growing. Plant and bud hardy to at least 38°F (3°C). Flowering May-June.

(r) 'Winsome Winnie': Elepidote rhododendron: 'Dexter's Honeydew' (s) X ('Virginia Richards' x R. yakushimanum , Exbury form). H, G, N (2010), and REG (2010): Dennis Mac Mullan, Hamburg, PA. Fls 10/ball truss, funnel-shaped, 3.2" (80mm) long x 3" (75mm) wide, with 5 wavy-edged lobes. Color ivory in bud, opening inside white with a 1" (25mm) diameter scarlet spot in the center of the throat; outside, pure white. Truss 7.6" (190mm) high x 7.6" (190mm) wide. Lvs held 2 years; 4" x 1.5" (100 x 40mm), elliptic, broadly acute apex, rounded base, flat margins; mid green above; hairless. Shrub 3' (0.9m) high x 3.5' (1.1m) wide in 8 years; intermediate habit. Plant and bud hardy to at least -10°F (-23°C). Flowering mid May.

(r) 'Yellow Balloon': Elepidote rhododendron: ('Ray Kruse's Big Cream'* x R. dichroanthum ) (s) X ('Janet Blair' x 'Autumn Gold'). H, G, N (2010), and REG (2010): Dennis Mac Mullan, Hamburg, PA. Fls 13/ball truss, broadly funnel-shaped, 3" (75mm) long x 4.8" (120mm) wide, with 6 wavy-edged lobes. Color deep orange/yellow in bud, opening inside moderately strong yellow in center shading to light yellow at lobe edges; outside deep yellow at base fading to medium yellow at edges; unmarked. Truss 9.6" (240mm) high x 9.6" (240mm) wide. Lvs held 2 years; 5.2" x 2" (130 x 50mm), elliptic, broadly acute apex, rounded base, down curved margins; dull and mid green above; hairless. Shrub 5' (1.5m) high x 5' (1.5m) wide in 7 years; intermediate habit. Plant and bud hardy to at least -10°F (-23°C). Flowering late May.

* The following unregistered names appear as parents in the above descriptions:
(v) 'Clare Elsie': Vireya rhododendron. H and G: Peter Sullivan, San Francisco, CA; R. leucogigas X ( R. konori x R. laetum ); flowers large, white, with hint of pink and some pink dots.

(r) 'Ray Kruse's Big Cream': Elepidote rhododendron: H and G: Ray Kruse, Newport, NY; 'Catalgla' X 'Crest'; flowers large, cream-colored.