American Rhododendron Society Plant Registry
Note: It is proposed to print the names and brief description of new American varieties which meet the requirements for registration. The names must be accompanied by descriptions of the varieties and must meet the requirements of the International Registration Authority (Dr. H. R. Fletcher, Royal Botanic Garden, Edinburgh, Registrar) before they are eligible for A.R.S. registry. Only clones will be registered, no group names. In the formula giving the parentage, the female parent is written first. We hope, whenever possible to indicate the probable size of the bush at 10 years of age. Unless otherwise specified the person's name, following the cross, indicates the one who made the cross, did the selecting, and introduced, or plans to introduce the variety. Breeders are urged to submit proposed names to the Registrar of the A.R.S., Dr. J. Harold Clarke, Long Beach, Wash., before they are actually used. There are thousands of names already in use and a name to be registered must not have been used before and must meet the other requirements of the A.R.S. Code of Nomenclature.
Anna Hall*
-
R. catawbiense
var.
album
x
R. yakushimanum
. Raised and introduced by D. G. Leach, Brookville, Pennsylvania. Flowers white, faintly flushed light pink (Nickerson TORP 8/2) on exterior, opening from deep pink (TORP 6/12) buds. Flowers 2¼" in diameter, 5 lobes, funnel-campanulate, 14 or 15 to the truss. Exceptionally floriferous. Leaves 1½ x 3½", oblanceolate-elliptic, convex, persistent, with thin tanish-brown indumentum. Plant 28" tall, 45" broad, 12 years from seed. Compact, densely foliaged. Early midseason. Hardiness H-1
Blaze*
- 'Mars' x
R. catawbiense
var.
rubrum
. Raised and introduced by D. G. Leach, Brookville, Pennsylvania. Flowers strong red (Nickerson 8.5RP 4/12) edged deep red (10RP 2.5/12); dorsal blotch light pink (5RP 7.5/5) With faint orange-yellow spotting. Flowers widely funnel shaped, 5 lobes, 16 to 18 to firm pyramidal truss 5" in diameter. Leaves 2" x 5¾", elliptic, with petioles dull red and pubescent. Plant 4' tall, 4' broad, 13 years from seed. Midseason. Hardiness: H-1.
Blue Jay
- a seedling of
R. ponticum
, raised and introduced by H. L. Larson, Tacoma, Wash. Plant to 6 ft. in 10 yrs., compact, leaves 6 ins. long by 2 ins. wide. Flowers pansy violet 033/3 edged 033/2; upper lobe bears heavy splotch of dahlia purple 931/3; stigma currant red 821; campanulate, 3 ins. across, 15 to a truss, late.
Chesterland
- Parentage unknown. Julian Pot - D. G. Leach. Flowers pale pink (Nickerson 9P 7.5/6), with bold strong yellow dorsal spotting (6Y 7/10). Flowers, 3½" in diameter, funnel-rotate, 6 lobes, 12 to the full truss. Leaves large, glossy green, elliptic-oblanceolate, variable in size, averaging 2¾ x 5¾", with faint white stippling above. Petiole slightly pubescent. Plant 42" tall, 36" broad, with excellent foliage density. Early. Hardiness: H-1.
Ivory Tower
-
R. catawbiense
var.
album
x (
R. wardii
x
R. fortunei
). Raised and introduced by D. G. Leach, Brookville, Pennsylvania. Flowers ivory (Nickerson 7.5Y 11/12) with dorsal suffusion and dual dorsal discontinuous stripes greenish-yellow (2.5GY 9/7). Florets 3" in diameter, 5 to 7 lobes, 10 to 13 to a globular truss 6 to 7" in diameter. Leaves 1¾ x 4½", elliptic. Buds and petioles at base dull red. Plant 4' tall, 4' broad after 12 years grown from seed. Early midseason. Hardiness: H-1.
June Bride
- (Deciduous Azalea) An advanced generation natural hybrid with
R. arborescens
and
R. bakeri
. Introduced by D. G. Leach, Brookville, Pa. Flowers white, with bifurcated dorsal blotch moderate yellow (Nickerson 10YR/8). Florets 2" in diameter, with red stigma changing to pink at the base, 4 or 5 to the truss. Leaves 1-1/8" x 2¾", glaucous beneath, oblanceolate. Plant 4½' tall, 6½' broad, 12 years from seed. Excellent foliage density.
Lodestar
-
R. catawbiense
var.
album
x 'Belle Heller'. Raised and introduced by D. G. Leach, Brookville, Pennsylvania. Flowers usually white, variable to very pale purple (Nickerson 7.5P 9/2) with bold spotted dark green-yellow (7.5Y 6/7) dorsal blotch. Flowers 3⅛" in diameter, widely funnel shaped, about 15 to a full truss 6" in diameter. Leaves 2 x 5", elliptic, convex, with pubescent petioles. Plant 4' tall, 5' broad, 11 years from seed Superior foliage density. Midseason. Hardiness: H-1.
Maid of Honor
- (Deciduous Azalea).
R. cumberlandense
x
R. arborescens
. Raised and introduced by D. G. Leach, Brookville, Pennsylvania. Flowers deep pink, (Nickerson 10RP 6,5/12) with reddish-orange (IOR 6/12) dorsal blotch. Florets 1¾" in diameter, 6 to 7 to the truss. Style and stamens red. Leaves ⅞" x 2¼", oblanceolate, glaucous beneath. Stems of mature current year's growth strigose. Plant 3½ tall, 3½' broad, 12 years from seed. Semi-dwarf with superior foliage density. Late June. Hardiness: H-1.
Maori
- (Deciduous Azalea) Ilam hybrid x Ilam hybrid, both unnamed. J. S. Yeates - D. G. Leach. Flowers strong reddish-orange (Nickerson 7.511 5/13), 2¾" in diameter, 5 or 6 lobes, about 10 to a truss 5" in diameter. Leaves 1⅜" x 3½", lanceolate, of leathery texture, glaucous beneath. Plant 48" tall, 32" broad, once cut back, 13 years from seed. Midseason. Hardiness H-1.
Otis Hyde
- 'Fabia' x 'Exbury Albatross', raised and introduced by H. L. Larson, Tacoma, Wash. Plant to 6 ft. in 10 yrs., erect, leaves 6 ins. long by 2¼ ins. wide, mucronate. Flowers rhodonite red 0022, with streaking of currant 821, and upper lobe lightly spotted with currant. Throat currant red 821. An orange overlay of corolla interior gives an overall effect of oxblood coral. Campanulate, 4 ins. across and 3 ins. long, 9 to 12 in a truss, late.
Rococo
- 'Boule de Neige' x
R. fortunei
Joseph Gable - D. G. Leach. Flowers light purplish-pink (Nickerson 2.5RP 8.5/4) with greenish-yellow (7.5Y 8.5/8) dorsal rays and light purplish pink (5RP 8/5) edge. Flowers 2¼" in diameter, funnel-campanulate, 5 or 6 lobes, waved and fluted, 12 to the truss. Exceptionally floriferous. Leaves 1½ x 4⅜", elliptic. Plant 6ft. tall, 6 ft. broad, 13 years after receipt as a 24" specimen. Superior foliage density. Early. Hardiness: H-1
Serenata
- 'Russell Harmon' x (
R. dichroanthum
x (
R. discolor
x
R. campylocarpum
)). Raised and introduced by D. G. Leach, Brookville, Pennsylvania. Flowers pale orange-yellow (Nickerson 7.5YR 10/4) with conspicuous spotted dorsal blotch strong orange (2.5YR 5.5/10.5); garden effect light orange. Flowers 2½" in diameter, of heavy substance, campanulate, with petaloid calyx spotted strong orange (2.5YR 5.5/10.5), 17 to a truss 7" in diameter. Leaves 2⅛" x 4⅜", oval-elliptic, dull green, held obliquely upright at 45° angle in terminal rosettes of the current year's growth. Plant 42" tall, 50" broad, 13 years from seed. Broad habit and superior foliage density. Late. Hardiness: H-1.
Spring Party
- (Deciduous Azalea). A selected form of
R. vaseyi
. LaBar - D. G. Leach. Flowers deep pink (Nickerson 911P 6/14), 1¾" in diameter, flat and widely open, 8 to 9 to the truss. Leaves 1½ x 3¾", lanceolate. Plant 4' tall, 4' broad, 10 years after receipt as an 8" specimen. Early. Hardiness: H-1.
Spring Salvo
- (Deciduous Azalea) IIam hybrid x Ilam hybrid, both un-named. J. S. Yeates - D. G. Leach. Flowers strong reddish-orange (Nickerson 8.511 6/13) with strong orange (1.5YR 6/14) dorsal blotch, 3½" in diameter, 7 to the truss. Leaves 1½ x 3¾", elliptical, glaucous beneath, of heavy, leathery character. Plant 40" tall, 32" broad, once cut back, 13 years from seed. Superior in foliage density. Early. Hardiness: H-1.
Tang*
- (Deciduous Azaleas) 'Scarlet Salute' x 'Red King'. Raised and introduced by D. G. Leach, Brookville, Pennsylvania. Flowers strong orange (Nickerson 611 5.5/12) suffused strong reddish orange (7.511 5/13) around perimeter, finally becoming brilliant scarlet (7.511 5/13) edged dark orange-red (7.5113.5/11). Flowers 2⅜" in diameter, 9 to 11 to a truss 5" in diameter. Leaves oblanceolate, 1⅜ x 3⅛", glaucous beneath. Plant 6' tall, 3' broad, 11 years from seed. Upright habit, superior foliage density. Midseason. Hardiness: H-1.
*'Anna Hall', 'Blaze' and 'Tang' have been listed previously, but with incomplete descriptions.