American Rhododendron Society Plant Registry
The following rhododendron and azalea names, submitted through the North American registrar, were approved and added to the International Rhododendron Register prior to May 15, 2002 by the Royal Horticultural Society, International Cultivar Registration Authority for the genus Rhododendron . Names conform to the rules and recommendations of the International Code of Nomenclature for Cultivated Plants - 1995 .
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). The format for reporting parentage conforms with that now used by the ICRA. If the direction of the cross is known, the seed parent is followed by an "(s)". For the plant being described, seed and pollen parents are separated by an upper case "X". 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: H = hybridized by, G = grown to first flower by, R = raised by, S = selected by, N = named by, I = introduced by, REG = registered by; dates are enclosed in parentheses immediately following the activity. Metric conversions of flower and leaf measurements are reported in 5mm (0.2") increments for dimensions greater than 25mm (1").
(a) 'Dink': Evergreen azalea: 'Linwood Lavender' (s) X 'Mania'. H (1991), G (1995), N (2002), and REG (2002): William L. Clagett, Derwood, MD; I (2002): White's Nursery, Germantown, MD. Fls hose-in-hose and semi-double to double, 2-3/terminal, broadly funnel-shaped, 1.4" (35mm) long x 2" (50mm) wide, lobes flat-edged, 5+5+some petaloid stamens; moderate purplish pink (65A) in bud, opening moderate purplish pink (65A) inside and out, with a slight flush of orange at base externally; rose spotting on dorsal lobe, extending onto adjacent lobes. Terminal inflorescence 1.5" high x 6" wide (40 x 150mm). Lvs 0.6" x 0.4" (15 x 10mm), elliptic, broadly acute apex, cuneate base, flat margins, glossy and moderate olive green (146A) above, with very fine, light colored hairs above and below. Shrub 0.7' (0.2m) high x 1' (0.3m) wide in 8 years, dense habit. Plant hardy to at least - 12°F (- 24°C); buds, -10°F (- 23°C). Late June.
(a) 'Dottie Ann': Evergreen azalea: 'Asahi-zuru' * (s) X unnamed hybrid (code CB-10)*. H (1991), G (1996), N (2002), and REG (2002): William L. Clagett, Derwood, MD; to be I (c 2004): White's Nursery, Germantown, MD. Fls single, 2-3/terminal, broadly funnel-shaped, 1.5" (40mm) long x 2.2" (55mm) wide, 5 wavy-edged lobes; color variable, bicolor buds opening inside and out to bicolor flowers, some with a light purple (75B) center and a broad border of strong purplish red (72B-C), others with a pale purplish pink (56B) center and a broad border of strong red (51A). Calyx lobes less than 0.1" (2mm) long, pale green, pubescent. Terminal inflorescence 1.5" high x 3.5" wide (40 x 90mm). Lvs 0.6" x 0.25" (15 x 6mm), elliptic to lanceolate, obtuse apex, cuneate base, flat margins, semi-glossy and moderate olive green (146A) above, hairy above and below. Shrub 0.7' (0.2m) high x 1.25' (0.38m) wide in 10 years, intermediate habit. Plant hardy to at least -12°F (-24°C); buds, -10°F (-23°C). Mid June.
(v) 'Hugh Caldwell': Lepidote rhododendron: laetum (s) X leucogigas . H (pre1980): probably Tom Lelliott, Australia; G: unknown; N (2002), and REG (2002): William A. Moynier, Los Angeles, CA. Fls 5-6/dome truss, tubular funnel-shaped, 4.25" (105mm) long x 3.5"-4" (90-100mm) wide, 5 wavy-edged lobes; opening inside reddish orange (34C), changing gradually to light orange yellow (23C) deep in the throat; outside light orange (29B), changing gradually to light orange yellow (23C) at base of tube. Truss 6" (150mm) high x 8" (200mm) wide. Lvs held 2-3 years, 6.5" x 2.25" (165 x 55mm), elliptic, acute apex, rounded base, upcurved margins, dull and dark green above, scaly. Shrub 5' (1.5m) high x 4' (1.2m) wide in 20 years, intermediate habit. Plant and buds hardy to at least 32°F (0°C). November to January.
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| 'Hugh Caldwell', a vireya. |
(a) 'Little's Enchanting Eve': Deciduous azalea: selection from calendulaceum , wild-collected on White Rock Mountain, WV. S (1993), N (1996), and REG (2001): Parker Lewis Little; I (2000): Piping Tree Gardens & Nursery; both Beaverdam, VA. Fls 10/dome truss, broadly tubular funnel-shaped, 1.5" (40mm) long x 2" (50mm) wide, with 5 frilly-edged lobes; creamy yellow flushed light pink at first, changing to salmon pink; tubes salmon outside; winter flower buds are purplish maroon. Calyx 0.1" (3mm) long, yellowish green. Terminal inflorescence 2.25" high x 3.25" wide (55 x 80mm). Lvs 3" x 1" (75 x 25mm), elliptic, acuminate apex, cuneate base, flat margins, dull yellowish green above, with hairs on leaf surfaces and edges, white at first, becoming tan. Shrub 1.8' (0.55m) high x 2' (0.6m) wide in the wild, intermediate habit. Plant and bud hardy to at least -20°F (-29°C). Mid May.
(r) 'Little's Enchanting Shells': Elepidote rhododendron: selection from maximum , wild-collected on White Rock Mountain, WV. S (1990), N (1999), and REG (2001): Parker Lewis Little, Beaverdam, VA. Fls 20/dense ball truss, saucer-shaped with overlapping lobes, 1.4" (35mm) long x 2.2" (55mm) wide, with 5 wavy-edged lobes; purplish pink in bud, opening white, becoming lavender pink along lobe edges both inside and out, with greenish yellow spotting on lower half of dorsal lobes; pedicels salmon-pink. Calyx c 0.3" (8mm) long, white tinged greenish yellow. Truss 5.4" high x 5.4" wide (135 x 135mm). Lvs held 3 years, 7.5" x 1.8" (190 x 45mm), elliptic, acute apex, cuneate base, flat and down curved margins, dull green above, with purple-red glands and a white scurfy layer on upper leaf surface and petioles. Shrub 4' (1.2m) high x 5' (1.5m) wide in 10 years, open habit. Plant and bud hardy to at least -20°F (-29°C). June-July.
(a) 'Little's Fancy Twist': Deciduous azalea: selection from calendulaceum , wild-collected on White Rock Mountain, WV. S (1999), N (1999), and REG (2001): Parker Lewis Little; I (2000): Piping Tree Gardens & Nursery; both Beaverdam, VA. Fls hose-in-hose, 9/dome truss, with a narrow tube expanding into broadly flaring lobes, 2" (50mm) long x 2.4" (60mm) wide, with 5+5 wavy/frilly-edged lobes; creamy salmon-pink in bud, opening light greenish yellow-pink with purplish pink lobe margins, changing to creamy yellow blushed pink at margins, with an orange gold dorsal blotch; tube greenish yellow outside. Calyx 1.3" (33mm) long, curled and extended, greenish yellow at base, yellowish pink at edge. Terminal inflorescence 2.4" high x 3.2" wide (60 x 80mm). Lvs 3" x 1" (75 x 25mm), narrowly elliptic, cuneate base, wavy and upcurved margins, glossy green above, with hairs on leaf surfaces and edges, white at first, becoming tan. Shrub 6' (1.8m) high x 3.5' (1.1m) wide in the wild, intermediate habit. Plant and bud hardy to at least -20°F (-29°C). Late May.
(a) 'Little's Fire Glow': Deciduous azalea: selection from calendulaceum , wild-collected on White Rock Mountain, WV. S (2000), N (2001), and REG (2001): Parker Lewis Little, Beaverdam, VA. Fls 12/dome truss, tubular funnel-shaped with a narrow tube and broadly flaring lobes, 2" (50mm) long x 2" (50mm) wide, with 5 wavy/frilly-edged lobes; orange-red in bud, opening inside deep pink-orange with a yellow-orange (becoming orange) blotch on lower portion of dorsal lobe; outside pink-orange. Calyx less than 0.1" (2mm) long, greenish yellow. Terminal inflorescence 2.8" high x 4" wide (70 x 100mm). Lvs 3" x 1.4" (75 x 35mm), broadly elliptic, broadly acute apex, cuneate base, wavy and upcurved margins, dull yellowish green above, with hairs on leaf surfaces and edges, white at first, becoming tan. Shrub 3' (0.9m) high x 2' (0.6m) wide in the wild, open habit. Plant and bud hardy to at least -20°F (-29°C). Mid May.
(a) 'Little's Glacier Pink': Evergreen azalea: Parentage unknown. G (2001), N (2001), and REG (2001): Parker Lewis Little; I (2001): Piping Tree Gardens & Nursery; both Beaverdam, VA. Fls 4/dome truss, openly funnel-shaped, hose-in-hose, 1.4" (35mm) long x 1.8" (45mm) wide, with 5+5 flat-edged lobes; deep pink in bud, opening inside pink, becoming purplish pink towards margins, with light red spots on lower half of dorsal lobe and portions of adjacent lobes; outside purplish pink with white streaks along midribs; very lightly scented; pistil dark pink. Green calyx lacking. Terminal inflorescence 1.5" high x 3.4" wide (40 x 85mm). Lvs 2" x 1.2" (50 x 30mm), broadly obovate, obtuse apex, cuneate base, wavy and upcurved margins, very glossy and dark green above, glossy green below, hairy on leaf surfaces and edges, white at first, becoming light yellow. Shrub 2.2' (0.7m) high x 1.1' (0.3m) wide in 3 years, open habit. Plant hardy to at least -16°F (-27°C). Early May.
(a) 'Little's Gold Giant': Deciduous azalea: selection from calendulaceum , wild-collected on White Rock Mountain, WV. S (1997), N (2000), and REG (2001): Parker Lewis Little; I (2001): Piping Tree Gardens & Nursery; both Beaverdam, VA. Fls 6/dome truss, tubular funnel-shaped with a narrow tube and broadly flaring lobes, 1.8" (45mm) long x 2.2" (55mm) wide, with 5 wavy/frilly-edged lobes; creamy yellow, flushed light pink near lobe tips, with a light orange or golden blotch covering the dorsal lobe; outside of tube greenish yellow and light pink. Calyx 0.1" (3mm) long, greenish yellow. Terminal inflorescence 2" high x 3.8" wide (5 0x 95mm). Lvs 2" x 1" (50 x 25mm), elliptic, broadly acute apex, cuneate base, wavy and down curved margins, dull and yellowish green above, with hairs on leaf surfaces and edges, white at first, becoming tan. Shrub 7' (2.1m) high x 5' (1.5m) wide in the wild, open habit. Plant and bud hardy to at least -20°F (-29°C). Late May.
(a) 'Little's Mountain Giant': Deciduous azalea: selection from calendulaceum , wild-collected on White Rock Mountain, WV. S (1990), N (1995), and REG (2001): Parker Lewis Little; I (2000): Piping Tree Gardens & Nursery; both Beaverdam, VA. Fls 8/dome truss, with a long narrow tube expanding abruptly into narrow, keeled lobes curved downwards at apex, 2" (50mm) long x 3" (75mm) wide, with 5 wavy-edged lobes; throat greenish yellow, lobes creamy yellowish pink becoming deeper pink at edges, dorsal lobe covered with a yellowish orange blotch, tube salmon yellow. Calyx 0.1" (3mm) long, yellowish green. Terminal inflorescence 3.5" high x 5.2" wide (90 x 130mm). Lvs 3.2" x 1.4" (80 x 35mm), elliptic, broadly acute apex, cuneate base, wavy and down curved margins, dull and dark green above, with hairs on leaf surfaces and edges, white at first, becoming tan. Shrub 6' (1.8m) high x 8' (2.4m) wide in the wild, open habit. Plant and bud hardy to at least -20°F (-29°C). Late May.
(a) 'Little's Mountain Sunlight': Deciduous azalea: selection from calendulaceum , wild-collected on White Rock Mountain, WV. S (1993), N (1994), and REG (2001): Parker Lewis Little; I (1999): Piping Tree Gardens & Nursery; both Beaverdam, VA. Fls 10/dome truss, tubular funnel-shaped, 1.4" (35mm) long x 1.8" (45mm) wide, with 5 wavy/frilly-edged lobes; light greenish yellow in bud, opening inside lemon yellow with a golden blotch on the dorsal lobe; outside lemon yellow lobes with a light greenish yellow tube. Calyx less than 0.1" (1.5mm) long, light green. Terminal inflorescence 2.25" high x 4" wide (55 x 100mm). Lvs 2.25" x 1.5" (55 x 40mm), elliptic, broadly acute apex, cuneate base, wavy margins, dull green above, with hairs on leaf surfaces and edges, white at first, becoming tan. Shrub 6' (1.8m) high x 4' (1.2m) wide in the wild, open habit. Plant and bud hardy to at least -20°F (-29°C). Mid June.
(a) 'Little's Orange Crush': Deciduous azalea: selection from calendulaceum , wild-collected on White Rock Mountain, WV. S (1998), N (1998), and REG (2001): Parker Lewis Little, Beaverdam, VA. Fls 7/rounded truss, tubular funnel-shaped with a long tube and broadly flaring, reflexed lobes, 1.5" (40mm) long x 2" (50mm) wide, with 5 wavy/frilly-edged lobes; light orange with creamy yellow areas and an orange-gold blotch covering most of dorsal lobe, becoming light pinkish orange along border; tube salmon orange outside; filaments light yellowish pink; style pink. Calyx less than 0.1" (c 1mm) long, green. Terminal inflorescence 2" high x 3.8" wide (50 x 95mm). Lvs 1.5" x 0.6" (40 x 15mm), elliptic, acuminate apex, cuneate base, wavy and down curved margins, dull and light green above, with hairs on leaf surfaces, white at first, becoming tan. Shrub 6' (1.8m) high x 3' (0.9m) wide in the wild, open habit. Plant and bud hardy to at least -20°F (-29°C). Mid May.
(a) 'Little's Orange Ridge': Deciduous azalea: selection from calendulaceum , wild-collected on White Rock Mountain, WV. S (1998), N (1998), and REG (2001): Parker Lewis Little, Beaverdam, VA. Fls 9/dome truss, broadly tubular funnel-shaped, 1.4" (35mm) long x 2" (50mm) wide, with 5 wavy-edged lobes; inside pinkish orange, the entire dorsal lobe orange; outside lobes pink becoming orange at tips, tube deep salmon-red; styles pink; filaments orange. Calyx less than 0.1" (2mm) long, yellowish green. Terminal inflorescence 2.4" high x 3.5" wide (60 x 90mm). Lvs 2.5" x 1.2" (65 x 30mm), broadly elliptic, broadly acute apex, cuneate base, wavy and down curved margins, semi-glossy and yellowish green above, hairy on leaf surfaces, hairs white at first, becoming tan. Shrub 6' (1.8m) high x 4' (1.2m) wide in the wild, open habit. Plant and bud hardy to at least -20°F (-29°C). Mid May. Blue ribbon (deciduous azalea species), ARS Middle Atlantic Chapter, 1998)
(a) 'Little's Purple Taber': Evergreen azalea: Sport from 'George Lindley Taber'. G (2001), N (2001), and REG (2001): Parker Lewis Little ; I (2001): Piping Tree Gardens & Nursery; both Beaverdam, VA. Fls 2-3/dome truss, broadly funnel-shaped, 2.4" (60mm) long x 3.5" (90mm) wide, with 5 wavy-edged lobes; dark purple in bud, opening inside medium reddish purple becoming more purple towards margins, with reddish purple veining throughout and with discrete reddish purple spots on dorsal lobe and portions of adjacent lobes; outside reddish purple; lightly scented; pistil rose-pink; filaments purple. Calyx c0.6" (15mm) long, yellowish green. Terminal inflorescence 4" high x 5" wide (100 x 125mm). Lvs 3.2" x 0.8" (80 x 20mm), narrowly elliptic, broadly acute apex, cuneate base, upcurved margins, dull and yellowish green above, hairy on leaf surfaces and edges, white at first, becoming light yellow. Estimated shrub height 5' (1.5m) in 10 years, open habit. Plant hardy to at least -15°F (-26°C). Early May.
(a) 'Little's Tangerine Giant': Deciduous azalea: selection from calendulaceum , wild-collected on White Rock Mountain, WV. S (1998), N (1999), and REG (2001): Parker Lewis Little; I (2001): Piping Tree Gardens & Nursery; both Beaverdam, VA. Fls 8/dome truss, tubular funnel-shaped with a narrow tube, 2" (50mm) long x 2.5" (65mm) wide, with 5 wavy-edged lobes; orange in bud, opening inside with an orange-red throat, shading to creamy orange-pink towards margins, the dorsal lobe with a red-orange blotch at base shading to orange-pink at edge; outside, tubes salmon-red and lobes creamy light orange edged deep salmon pink; style pink; filaments yellow. Calyx minute, green. Terminal inflorescence 3.8" high x 4.2" wide (95 x 105mm). Lvs 1.8" x 1" (45 x 25mm), elliptic, broadly acute apex, cuneate base, wavy and down curved margins, dull and yellowish green above, with hairs on leaf surfaces and edges, white at first, becoming tan. Shrub 6' (1.8m) high x 4' (1.2m) wide in the wild, open habit. Plant and bud hardy to at least -20°F (-29°C). Late May.
(a) 'Little's Tangerine Luster': Deciduous azalea: selection from calendulaceum , wild-collected on White Rock Mountain, WV. S (1997), N (2000), and REG (2001): Parker Lewis Little; I (2001): Piping Tree Gardens & Nursery; both Beaverdam, VA. Fls 6/dome truss, tubular funnel form expanding into saucer-shaped lobes, 2" (50mm) long x 2.4" (60mm) wide, with 5 wavy-edged lobes; inside pink to deep orange with a scarlet dorsal blotch; outside with orange red tubes; filaments orange-pink. Calyx minute, green. Terminal inflorescence 2.8" high x 3.5" wide (70 x 90mm). Lvs 2.4" x 1.2" (60 x 30mm), broadly elliptic, broadly acute apex, cuneate base, flat margins, glossy and dark green above, with hairs on leaf surfaces and edges, white at first, becoming tan. Shrub 8' (2.4m) high x 5' (1.5m) wide in the wild, open habit. Plant and bud hardy to at least -20°F (-29°C). Early-mid May.
(a) 'Little's Tangerine Pink': Deciduous azalea: natural hybrid of calendulaceum and probably prinophyllum , wild-collected on White Rock Mountain, WV. S (1993), N (1994), and REG (2001): Parker Lewis Little; I (1999): Piping Tree Gardens & Nursery; both Beaverdam, VA. Fls 9/dome truss, tubular funnel-shaped, expanding into reflexed lobes, 1.8" (45mm) long x 2.2" (55mm) wide, with 5 wavy-edged lobes; purplish red in bud, opening inside deep salmon pink with a light yellowish pink throat, a yellowish orange blotch on the dorsal lobe, and a yellow streak running longitudinally from apex of each lobe to the throat; outside deep salmon pink with red tubes. Calyx less than 0.1" (2mm) long, yellowish green. Terminal inflorescence 3" high x 3.4" wide (75 x 85mm). Lvs 1.5" x 1" (40 x 25mm), broadly elliptic, broadly acute apex, cuneate base, wavy and down curved margins, glossy and yellowish green above, with hairs on leaf edge and on veins and midrib below, white at first becoming tan. Shrub 6' (1.8m) high x 6' (1.8m) wide in the wild, open habit. Plant and bud hardy to at least -20°F (-29°C). Early June.
(a) 'Little's Wavy Pink': Deciduous azalea: natural hybrid of calendulaceum and periclymenoides , wild-collected on White Rock Mountain, WV. S (1997), N (1998), and REG (2001): Parker Lewis Little; I (1999): Piping Tree Gardens & Nursery; both Beaverdam, VA. Fls 8/dome truss, tubular funnel-shaped, lobes reflexed, ventral lobes twisted, 1.5" (40mm) long x 1.5" (40mm) wide, with 5 wavy-edged lobes; buds light greenish with a lavender apex, opening inside light pink with a narrow, longitudinal pink streak along center of each lobe and a large, golden dorsal blotch; outside tube shades from dark pink at base to light greenish at base of lobes. Calyx 0.1" (3mm) long, yellowish green. Terminal inflorescence 1.5" high x 3.2" wide (40 x 80mm). Lvs 2.4" x 1" (60 x 25mm), elliptic, broadly acute apex, cuneate base, wavy and down curved margins, semi-glossy and yellowish green above, with hairs on leaf edges and midrib below, white at first, becoming tan. Shrub 6' (1.8m) high x 12' (3.6m) wide in the wild, open habit. Plant and bud hardy to at least -20°F (-29°C). Mid-late May.
(a) 'Little's White Ruffles': Evergreen azalea: Parentage unknown. G (2000), N (2000), and REG (2001): Parker Lewis Little; I (2001): Piping Tree Gardens & Nursery; both Beaverdam, VA. Fls 3/flattened dome truss, openly funnel-shaped, 1.8" (45mm) long x 2.2" (55mm) wide, with 5 very wavy-edged lobes; white in bud, opening white inside and out, with yellowish green spotting on lower portion of dorsal lobes; filaments white. Calyx 0.3" (8mm) long, light green. Terminal inflorescence 3" high x 3.5" wide (75 x 90mm). Lvs 1.8" x 1.2" (45 x 30mm), broadly elliptic, broadly acute apex, cuneate base, wavy and upcurved margins, dull and mid green above, hairy on leaf surfaces, white at first, becoming yellow. Shrub 1.5' (0.4m) high x 1.7' (0.5m) wide in 4 years, dense habit. Plant hardy to at least -10°F (-23°C). Late April.
(a) 'Richard Montgomery 1956': Evergreen azalea: 'Rosette' (Glenn Dale) (s) X 'Mania'. H (1991), G (1996), N (2002), and REG (2002): William L. Clagett, Derwood, MD; to be I (2004): White's Nursery, Germantown, MD. Fls mostly double, some semi-double, rarely hose-in-hose, 2-3/terminal, openly funnel-shaped, 1.4" (35mm) long x 1.8" (45mm) wide, c 10 wavy-edged lobes; vivid red (45C) in bud, opening inside strong red (45D), outside vivid red (45C); with deep red (53A) spotting on dorsal lobes. Calyx lobes 0.1" (3mm) long, pale green. Terminal inflorescence 1.4" high x 3" wide (35 x 75mm). Lvs 0.5" x 0.2" (15 x 5mm), elliptic, acute apex, cuneate base, flat margins, glossy and moderate olive green (147A) above, with off white hairs above and below. Shrub 0.5' (0.15m) high x 1.2' (0.35m) wide in 10 years, dense habit. Plant hardy to at least -12°F (-24°C); buds, -10°F (-18°C). Mid June.
(a) 'Sonny's Misty': Evergreen azalea: derived from 'Caprice' (Mossholder) by "selective propagation." G (2002), S (2002), N (2002), and REG (2002): Louis Reichart, Glen Arm, MD. Fls hose-in-hose, 2/terminal, broadly funnel-shaped, 2" (50mm) long x 3.2" (80mm) wide, 5+5 wavy/frilly-edged lobes; dorsal lobes of buds white with a deep pink (51B) apex, ventral lobes deep pink (52B); dorsal lobes opening inside and out with margins of vivid red (52A) to deep pink (52B-C), c 0.1" to 0.5" (c 3-12mm) wide, changing abruptly to nearly white with sparse pale yellow spots in throat; ventral lobes opening inside and out with margins of vivid red (52A) to deep pink (52B-C) growing paler gradually to base; dense white hairs on pedicels. Terminal inflorescence 2.4" high x 4" wide (60 x 100mm). Lvs 0.8"-1.4" x 0.3"-0.9" (20-35 x 8-23mm), obovate, acute apex, cuneate base, glossy and moderate olive green (137A) above, with sparse tan hairs above and below; petioles moderately hairy. Estimated shrub height 3' (0.9m) in c 10 years, intermediate habit. Early May. (Note: "selective propagation" is described by L. Reichart as a process to intensify flower color by choosing propagating wood from a branch having a flower slightly darker than the typical color. The process is repeated for as many generations as required to achieve the desired color.)
* The following unregistered names appear as parents in the above descriptions:
'Asahi-zuru': Evergreen azalea (Satsuki); parentage unknown
CB-10: unnamed, semi-evergreen, semi-double azalea; parentage unknown