N |
Nakamura 
Nana Compacta
[M. kobus], cv. (Kohankie Nursery, Painesville, Ohio, circa 1950), Wyman in
Arnoldia 20: 28 (1960), ‘originated in the old Kohankie Nursery of Painesville,
Ohio, before 1950. A slow growing, compact plant with flowers as yet unknown.’
Kammerer, Morton Arb. Bull. 24: 22 (1949), ‘eight feet is given as its
maximum height.’
Nana Praecox
[M. grandiflora], cv. (Pampanini, Bull. Soc. Tosc. Ort.41: 104. 1916), leaves
coriaceous, rugose, apex rotund; flowers precocious.
Nanatensis
[M. grandiflora], cv. (sic), a frequent misspelling for cv. Nannetensis.
Nancy Hardy
[M. (M. campbellii)], cv. (Gardiner, J. M. Magnolias, p. 133, 1989). Nomen
nudum. Award of Merit (Major A. E. and Mr. G. A. Hardy, 1984). (Gardiner,
Jim. Magnolias: A Gardener’s Guide, p. 120, 2000). ‘This large
free-flowering tree has large white flowers flushed pink that appear from
mid-April. The flowers, to 35 cm (13 ½ in.) wide, have 12 tepals that
are each 15 cm (6 in.) long. This clone was first exhibited in 1984 from a
plant growing at Sandling Park, Hythe, Kent, the home of Carolyn Hardy and
her late husband Alan.’
Nannetensis
[M. grandiflora], cv. (Delaunay, Nursery in Angers, France, circa 1865), in
Denis, Rev. Hort. 1865: 109 (1865), nomen nudum. in Leroy, Cat. p. 79 (1873),
Angers, France; ‘de Nantes FL. D.’ first grown by Delaunay of
Angers, per Mouillefert, Traite 112 (1891), flowers double, very floriferous.
Nannetensis Flore Pleno
[M. grandiflora], cv. (Mottet in Nicholson, Dict. Prat. Hort. 3: 232, T. 35,
Fig. 2. 1895), as ‘Nanetensis Fl.-Pleno.’ = cv. Nannetensis.
Narrowleaf
[M. grandiflora], cv. (Kelsey & Dayton, Stand. Pl. Names, Ed. 2, P. 376.
1942), per synonymy = cv. Exmouth.
Neil McEacharn
[M. x loebneri], cv. (Extr. Proc. p. 20, Jour. Roy. Hort. Soc. 87, 1962).
Findlay, Jour. Roy. Hort. Soc. 88: 463 (1963), ‘with tree-like habit.’
flowers white, like var. stellata. Grown from seed sent by Captain Neil McEacharn
about 1953. Jour. Roy. Hort. Soc. 93: 237 (1968), ‘covered in profusion
with small white flowers...received the A. M. (1968).’ Hilliers Man.
of Trees and Shrubs, Ed. 20 1973. ‘A cross between M. kobus and M. Stellata
cv. Rosea. Raised at Windsor...’
Neil McEachern
[M. stellata], cv. (Magnolia 20(1) [Issue 37]: 17, 1984). ‘Originated
at Savill Garden, Windsor Great Park, England. Form with a flower similar
to stellata, but making a very large shrub.’ John Bond, Crown Estate
Office, The Great Park, Windsor, England (R.H.S. Journal, 1968). (A seedling
of M. stellata var. rosea).
Nelson
[M. acuminata], cv. (Newsl. Amer. Mag. Soc. 9(2): 13. 1973). `Mutant dense
shrubby branch on an old tree belonging to William Nelson, Princeton, Illinois.
The mutant branch has not been observed in flower or fruit.’
Nicholsoniana
[M. wilsonii], F. (Rehder & Wilson) Rehder, Jour. Arnold Arb. 20: 91.
1939). basionym: M. nicholsoniana (Rehder & Wilson in Sargent, Pl. Wilson.
1: 394. 1913). Type: Wilson 838, Washan, W. Sichuan, China. syn.: M. taliensis
(W. W. Smith, Notes Roy. Bot. Gard. Edinb. 8: 341. 1915), and M. wilsonii
f. taliensis (W. W. Smith) Rehder, Manual Cult. Trees, Ed. 2, 249 (1940),
leaves glaucescent and glabrescent beneath except the rufous pilose midrib.
Cultivated since 1908. This name has priority.
Niemetzii
[M. x soulangeana], cv. (F. W. Niemetz, Nurseryman, Temesvar. Romania, 1907).
per Schwerin, Mitt. Deutsch. Dendr. Ges. 16: 256 (1907), habit columnar or
fastigiate as in the Italian poplar (Populus nigra cv. Italica), Kruessmann,
Handb. Laubg. 2: 104 (1961), with pointed, purple flowers.
Nigra 
[M. liliiflora], cv. (James Gould Veitch, 1861, from Japan per Bean, Trees
& Shrubs Brit. Is. 2: 74. 1914). syn.: M. soulangeana cv. Nigra (Robinson,
The Garden 17: 468, 1883), and Nicholson, The Garden 25: 276-277, T. 434 (1884),
illustrating deep purple flowers. Wister, Swarthmore Plant Notes, Ed. 3, 1
(1): 82 (1955-56), ‘hardiest liliiflora form...fls. deep purplish maroon,
darkest of all. 8-10 petals, 4 x 2 IN. flower has narrow effect, dark inside
as well as outside.’
Nigra
[M. x soulangeana], cv. (Nicholson, The Garden 25: 276, T. 434, 1884), flowers
deep purple in illustration. = M. liliiflora cv. Nigra.
Nigricans
[M. denudata], cv. (Pampanini, Bull. Soc. Tosc. Ort.40: 201. 1915). per synonymy
= M. liliiflora cv. Nigra.
Nimbus 
[M. obovata, M. virginiana var. virginiana], cv. (Magnolia 20(1) [Issue 37]:
17-18, 1984). ‘Sepals 3, pale green, obovate with rounded tips, 3 inches
long by 2 inches wide. Tepals 8, creamy white, elliptic and strongly concave,
with tips rounded or remotely apiculate. Flowers sterile and no fruit has
been observed.’ Registered by F. S. Santamour, Jr., U.S. National Arboretum,
Washington, D.C. (M. hypoleuca x M. virginiana var. virginiana).
Nippon
[M. kobus], cv. (Ingram, Extr. Proc. p. 76, Jour. Roy. Hort. Soc. 940 1969),
received award of merit, 1969. Exhibited by Capt. Collingwood Ingram, The
Grange, Benenden, Kent, England. nomen nudum.
Nitida 
[M. grandiflora], cv. (Hort. EX Pampanini, Bull. Soc. Tosc. Ort.41: 104. 1916),
nomen nudum. leaves presumably lustrous above, which is usual, in varying
degree, for the typical var. grandiflora.
Nobilis
[M. stellata], cv. (Wada, Jap. Gard. Treas. P. 36, circa 1925, Hakoneya Nurseries,
Numazu-Shi, Japan), ‘pure-white form, a tree-like (M). stellata.’
Norbert
[M. x soulangeana], cv. (Kelsey & Dayton, Stand. Pl. Names, Ed. 2, P.
377. 1942) = cv. Norbertii.
Norbertiana
[M. x soulangeana], cv. (Rehder in Bailey, Stand. Cycl. Hort. 4: 1969. 1916),
‘white and light purple, one of the latest to bloom. In F. & F.
Nurseries, Cat. p. 45 (1942), Springfield, New Jersey = cv. Norbertii.
Norbertii 
[M. x soulangeana], cv. (Loudon, Arb. Frut. Brits 1: 279. 1838), given as
M. conspicua cv. Norbertii. syn.: M. norbertiana in Bouche and Bouche, Blumenzucht
2: 717 (1855). Nicholson in The Garden 24: (1883), dwarf form. Ellwanger &
Barry, Descr. Cat. p. 34 (1886), flowers reddish-purple. M. conspicua norbertiana
in Nicholson, gard. Dict. Cent. Suppl. 512 (1901), ‘flowers purplish-tinted,
large stout. this is a late-flowering variety of the well-known M. conspicua.’
apparently from Cels in 1800 per Kruessmann, Handb. Laubg. 2: 104 (1961).
Norman Gould
[M. stellata], cv. (Hilliers Man. of Trees and Shrubs, Ed. 2. 1973). ‘It
is reputedly a (colchicine)-induced polyploidal form of M. stellata...raised
at the R.H.S. GARDENS at Wisley...F. C. C. 1967.’
Northern Belle
[M. virginiana], cv. (Magnolia 33(1) [Issue 63]: 31, 1998). ‘This selection
remains evergreen to –25°F. The parent plant is narrow, 25 feet
tall and 8 to 9 feet wide at 17 years of age. Selected and registered by Ned
Bader, President of Ned’s Nursery, Inc. in Amanda, Ohio, and propagated
by him.’ M. virginiana var. australis.
Northwest
[M. liliiflora, M. sprengeri], cv. (Callaway, Dorothy J. The World of Magnolias,
p. 222, 1994). ‘It was named by Irene Burden of Hazel Dell Gardens,
Canby, Oregon. Flowers are much like those of ‘Galaxy’ in color,
but the tepals are less floppy. It is not quite as bushy as ‘Galaxy’
in growth habit but develops at about the same rate. (M. liliiflora x M. sprengeri
cv. Diva).
Norway Red
[M. liliiflora], cv. (Callaway, Dorothy J. The World of Magnolias, p. 222,
1994). = Holland Red.
Nymans 
[M. sargentiana], cv. (Otto Eisenhut nursery catalog, p. 5, 1989, Ticino,
Switzerland). Nomen nudum. Listed as variety of M. sargentiana var. robusta.
O
Obovata 
[M. grandiflora], cv. (Aiton, Hort. Kew. 2: 251. 1789), leaves obovate-oblong:
flowers expansive. Introduced to Great Britian in 1734 per Loudon, Hort. Brit.
226 (1830).
Obtusa
[M. grandiflora], cv. (Nouv. Dict. Hist. Nat. 13: 520. 1803, Paris), nomen
nudum.
Obtusifolia
[M. grandiflora], cv. (Page, Page's Prodr. p. 37. 1817, Southampton, England),
leaves ‘obtuse.’ in Loddiges, Cat. Ed. 11, P. 29 (1818), nomen
nudum. Bosse, Vollst. Handb. Blumeng., Ed. 2, 2: 465 (1841), leaves obtuse.
Pampanini, Bull. Soc. Tosc. Ort.41: 105 (1916), leaves small and rotund.
Ocean Wave
[M. grandiflora], cv. (Hume, Morris Arb. Bull. 12: 16. 1961), described with
leaves elliptic, margin particularly undulate. Original tree was at the University
of Florida, Gainesville. Florida.
Ochroleuca
[M. virginiana], cv. (Schelle in Beissner et al., Handb. Laubholz Benennung
10l. 1903), as M. glauca var. ochroleuca. nomen nudum.
Octopus
[M. kobus] cv. (Magnolia 36(2) [Issue 70]: 19, 2001) This name will replace 'Edward Kehr' for a plant that was originally created by Dr. August Kehr. It is being renamed (with permission of Dr. Kehr) by Olav Kalleberg.
Odoratissima
[M. virginiana], cv. (Pampanini, Bull. Soc. Tosc. Ort.40: 233. 1915), AS M.
glauca cv. Oddratissima, nomen nudum. ‘flowers fragrant.’
Odoratissima
[M. x soulangeana], cv. (Pucci, Bull. Soc. Tosc. Ort.32: 166. 1907), A hybrid
from M. yulan x M. lennei, flowers large, white & rose, fragrance delicious,
Compare M. odoratissima (Reinwardt ex Lavallee, Arb. Segrez. 8. 1877), which
= cv. Fischeri.
officinalis 
[M. officinalis], var. - The typical variety.
officinalis var. biloba 
Old Port 
[M. liliiflora 'Nigra' x (M. x soulangeana 'Sweet Simplicity') cv. (Magnolia 40(1) [Issue 77]: 18, 2005) This multi-branched, small tree bears cup-shaped, rich, dark, wine-purple (RHS 59A) flowers with a light, fruity fragrance; tepals are 9cm (3.54in) long and 6.3cm (2.5in) wide; inner surfaces of tepals are off-white lined along the veins and stained at the base a beet-root purple (RHS 71A); estimated mature height is 9-4m (10-13ft); predicted hardy to USDA zone 7 (possibly 6); originated at Duncan & Davies Nurseries of New Plymouth, Taranaki, New Zealand; selected and named by Vance Hooper, registered on September 12, 2004 by Jim Rumbal.
Olivia 
[M. acuminata var. subcordata 'Miss Honeybee' x M. 'Gold Crown'] cv. (Magnolia 38(2) [Issue 74]: 28-29, 2003) This hybrid has a very good upright, pyramidal habit and produces large, yellow flowers with good substance that are held upright until the end of flowering; flowers appear just before or with the first leaves; sepaloids are 3.5-4cm, rarely 4.5cm (1.38-1.57in , rarely 1.78in) long and 1.0-1.2cm (0.39-0.47in) wide, green (RHS 143C) to papery yellow-green (RHS 144B); 6 petaloids are about 8cm (3.5in) long and 1.7-3.0cm (0.67-1.18in) wide, intense yellow (RHS 7A-12A); young petaloids have a greenish tinge; stamens about 5mm (0.20in) long with pinkish anthers and deep pink filaments; gynoecium green with yellowish styles and stigmas; hybridized by Dr. August Kehr in 1991; raised, selected, and registered (August 14, 2002) by Koen Camelbeke and Philippe de Spoelberch of Arboretum Wespelaar.
Olmenhof
[M. x thompsoniana] cv. (Magnolia 40(1) [Issue 77]: 24-25, 2005) This selection is an upright, broad, multi-stemmed tree selected from Olmenhof Park in Herk de Stad, Belgium; vase-shaped flowers are produced over a long season; flowers are 10cm (3.94in) long and 7-8cm (2.75-3.15in) wide when open and have twelve petaloids; three outer petaloids are obovate and greenish-white at first, but reflexing and browning before others; nine inner petaloids are spatulate and whitish (mix of RHS 158D, 8D and 11D); outer whorls about 10-12cm (3.94-4.72in) long and 6.5cm (2.56in) wide; inner whorls smaller and narrower; stamens pale yellowish; gynoecium green with reddish-brown stigmas (pale pinkish in receptive stage); flowers have a sweet, intense fragrance; leaves elliptic to broadly obovate about 20-25cm (7.87-9.84in) long and 8-11cm (3.15-4.33in) wide, petioles green, adaxial side glabrous and dark green (RHS 141AB), abaxial side silvery and densely set with short pale hairs giving them a velvety touch; selected, named and registered (November 9, 2004) by Koen Camelbeke of Arboretum Wespelaar, Jef Van Meulder of Arboretum Bokrijk, and Wim Peeters of Kapelleberg, Belgium. Name and description of this plant previously published by Peeters, W. 2004 Jaarboek Belgische Dendrologische Vereniging 2000:94.
O'Neill
[M. liliiflora], cv. (J. C. McDaniel in Newsl. Amer. Magnol. Soc. 9 (2): 22.
1973) as O'Neill clone. its flowers closely match the color illustration for
M. liliiflora in Johnstone (Asiatic Magnolias in Cultivation, 1955). flowers
with 3 to 4 small sepaloid tepals plus 7 to 9 petaloid tepals larger and darker
than the 6 petaloid tepals of what is mostly cultivated in America as cv.
Nigra, and slightly later in season of spring bloom. Type tree at 615 W. John
St., Champaign, Illinois.
O'Niel
[M. liliiflora], cv. (sic) name in manuscript, appended to January 1970 List
of Magnolia Gardens, Canterbury, Kent, England, nomen nudum.
Ontario
[M. acuminata], cv. (Magnolia 29(2) [Issue 56]: 24, 1994). `This cultivar
was selected by Richard B. Figlar from a wild population occurring in Charlotteville
Tp., Ontario, Canada in an area known as the Smith Tract. Figlar reports that
the species is endangered in Canada and that less than 50 truly wild trees
exist in two centers of population. This cultivar was selected by Figlar to
preserve genetic material from an authentic Canadian wild population and to
make this presumably hardy material available to breeders without disturbing
wild Canadian populations. Figlar believes that this northerly form may be
less tolerant to drought and heat than others, but is hardy to zone 4 and
perhaps 3. An herbarium specimen of this cultivar is located at Clemson University
(Voucher #1458). `Ontario’ was registered by Richard B. Figlar, Pomona,
New York, in June of 1994.’
Opal
[M. x soulangeana], cv. (M. P. Borlase, Rhod. with Cam. & Mag. 41: 61.
1988). Nomen nudum. = M. x soulangeana cv. Pickard's Opal.
Opal Haws
[M. grandiflora], cv. (Magnolia 20(1) [Issue 37]: 18, 1984). ‘A 20 year-old
tree in Boise, Idaho that has survived winter temperatures as low as -24ÆF.
It is 20 feet tall and has small leaves (2-6 inches) with a rusty brown indumentum.
Flowers 6-10 inches across. It was originally published as ‘Suzette’
in Magnolia 18(2): 22 [1982].’ Registered by Steven Gossett, Boise,
Idaho.
Opelousas
[M. virginiana], cv. (Magnolia 20(1) [Issue 37]: 18, 1984). ‘A tall,
pyramidal tree with broad leaves 6-7 inches long, deciduous in winter. Flowers
4-4 1/2 inches wide with 11 tepals that open out flat. Registered by Ken Durio,
Opelousas, Louisiana.
Orbit
[M. grandiflora], cv. (Callaway, Dorothy J. The World of Magnolias, p. 103,
1994). ‘A dwarf, compact, rounded form selected by J. C. McDaniel of
Urbana, Illinois. Date of selection unknown.’
Orchid
[M. liliiflora, M. stellata], cv. (Hillenmeyer Nurseries, Lexington, Kentucky,
1961), from letter dated 24 August 1961 by Louis Hillenmeyer, Jr.: flower
buds more winter-hardy. this clone was the only M. Stellata to bloom in 1960.
In Santamour, Morris Arb. Bull. 16: 46 (1965), tepals, anthers and stigmas
colored red-purple. In Savage, Newsl. Amer. Magnol. Soc. 9 (2): 23 (1973).
‘Habit: completely shrubby, symmetrical...leaves obovate; acuminate
tip...revolute edges...about the size and shape of (M. x soulangeana cv. Alexandrina)...buds
curved like (M). liliiflora. Always have three tiny sepals and six...showy
tepals. color...bright purple...showy and visible from far away. a faint but
refreshing and attractive scent...flowers never open more than halfway to
the horizontal...wood dark brown, like (M). liliiflora. Continuous sprouting
from crown like (M). liliiflora. More arctic than (M. liliiflora cv). Nigra,
but tip kills in severe winters. flowering goes on and on’ J. C. McDaniel
here places it as a hybrid, (M. Stellata x M. liliiflora).
Orchid Beauty
[M. x soulangeana], cv. (Otto Spring,
Nursery, Okmulgee, Oklahoma. 1966), first propagated in 1963, introduced to
commerce in 1966, then registered in 1970, described with short branching
habit, with large light purple flowers, everblooming. Was seedling no. 1.
(M. x soulangeana cv. Rustica Rubra x M. liliiflora cv. Nigra).
Osaka
[M. liliiflora, (unknown)], cv. (Magnolia 20(1) [Issue 37]: 18, 1984). ‘Magnificent
purple flowers from May to July, being almost black in bud and forming a bush
about 6 feet high. (Treseder, Magnolias, P. 164).
Ovata
[M. grandiflora], cv. (L'horticulteur Praticien 2: 114), ex Pampanini, Bull.
Soc. Tosc. Ort.41: 105 (1916), nomen nudum.
Overton
[M. grandiflora], cv. (Magnolia 25(1) [Issue 47]: 20, 1989). ‘Listed
but not described in Magnolia 23(2): 4, 1988.’ Introduced by Robbins
Nursery, Willard, North Carolina.
Oxoniensis
[M. grandiflora], cv. (Baumann, Cate p. 26. 1842, Bollwiller & Mulhouse,
France), and Seringe, Fl. Jard. 3: 226 (1849), nomen nudum. Bouche & Bouche,
Blumenzucht2: 716 (1855), flowers double. Leroy, Cat. p. 79 (1873), Angers,
France; flowers double. In Mouillefert, Traite 112 (1891), flowers double.
A. & E. Kay, Pl World Fla. 33 (1933), ‘leaves cinnamon-brown underneath.
flowers almost constantly from March to November.’ = cv. Exmouth.
Oxoniensis Flore Duplex
[M. grandiflora], cv. (Bosse, Vollst. Handb. Blumeng., Ed. 2, 2: 465. 1841),
with double flowers. = cv. Exmouth.
Ozarkensis
[M. acuminata], var. (Ashe, Jour. Elisha Mitchell Soc. 41: 2690 1926). syn.:
Tulipastrum acuminatum var. ozarkense (Ashe) Ashe, Bull. Torrey Bot. Club
55: 464 (1928). leaves broadly obovate to ovate, pubescent to glabrescent
beneath, twigs glabrous, fls. 8-10 cm. long. habitat: NW. Arkansas and SW.
Missouri to Le Flore County, Oklahoma