Cultivar Check Lists for Ornamental Plants - Claude E. Phillips ...
Cultivar Check Lists for Ornamental Plants - Claude E. Phillips ...
Cultivar Check Lists for Ornamental Plants - Claude E. Phillips ...
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Tucker-24<br />
1980, 1981, 1985c, 1986c, 1991e). The entire orchid In<strong>for</strong>mation System is also available on<br />
compact disc from RHS. Holst (1999) discusses the cultivars of Catesetum. Japan Orchid<br />
Growers Assocation (n.d.) has excellent color photographs of cultivars derived from Cattleya.<br />
The slipper orchids (Cypripedium, Paphiopedilum, etc.) are discussed by Cash (1991). Groves<br />
(1995), Motes (1997), and Poliakoff (1987) uniquely list Vanda cultivars with the percentage of<br />
genetic background of each ancestral species. Gilmour, Greatwood, and Hunt (1976) give the<br />
names of intergeneric hybrids. Some colored photographs or orchid cultivars are given in<br />
Mikolajski (1999a). See, also, the ICRA <strong>for</strong> orchid grex names<br />
(http://www.rhs.org.uk/research/registration_orchids.asp).<br />
Origanum<br />
The cultivars of Origanum, the marjorams, are discussed by Tucker and Rollins (1989).<br />
Trehane (1989) and White (1998) list some additional cultivars.<br />
Osmanthus<br />
The cultivars of the devilweeds are discussed by Gelderen (1999). The evergreen<br />
cultivars are discussed by Seehawer (2000).<br />
Osmunda: see ferns<br />
Ostrya: see Carpinus<br />
Paeonia<br />
The cultivars of the peonies are first listed by Coit (1907), later by Beal (1920) and<br />
Kelsey and Dayton (1942), and most recently by Jelitto and Schacht (1990) and Trehane (1989).<br />
The most comprehensive listing is by Kessenich (1976). Page 91997) provides good colored<br />
illustrations. These checklists should be supplemented with Fearnley-Whittingstall (1999),<br />
Harding (1917), Klehm (1995), Rogers (1995), and Wister (1962) <strong>for</strong> fuller descriptions and a<br />
comprehensive bibliography. Haworth-Booth (1963), Haw (2001), and Krüssmann (1984-<br />
1986) also supply further in<strong>for</strong>mation on the tree peonies, P. suffruticosa Andrews. American<br />
peony hybrids are listed by Kessenich (1990). The selections of P. suffruticosa subsp. rockii S.<br />
G. Haw & L. A. Laucrier are listed by Rieck (1998). The intersectional hybrids of Itoh are<br />
discussed by Good (1996a). Daphnis hybrids of P. lutea Delav. ex Franch. are listed by Good<br />
(1996b, 1997), while the Saunders hybrids are listed by Hertle (1997). Hybrids of P. tenuifolia<br />
L. are listed by Rieck (1994), while hybrids of P. peregrina Mill. are listed by Rieck (1995).<br />
Hybrids of P. officinalis L., P. peregrina, and P. lactiflora Pall. are listed by Ehrardt (1988b).<br />
Later introductions have been published in the American Peony Society Bulletin. Additional<br />
cultivars are listed by Kortmann (1998).<br />
Pandorea: see Australian (& South African) plants<br />
Papaver<br />
The primary reference on poppy cultivars is Grey-Wilson (1993). The cultivars of the<br />
oriental (P. orientale L.), Iceland (P. nudicaule L.), and other poppies are also listed by Kelsey<br />
and Dayton (1942). Hybrids of the oriental poppies are discussed by Rothmund (1996).<br />
Parakohleria: see Gesneriaceae<br />
Parthenocissus<br />
The cultivars of Boston ivy, P. tricuspidata (Sieb. & Zucc.) Planch, are listed by Laar<br />
(1981b, 1992).<br />
Passiflora<br />
The cultivar of Passiflora, the passion flowers, are thoroughly discussed by<br />
Vanderplank (1991, 1996, 1998, 2000). Additional cultivars are discussed by Gottschalk<br />
(1991).<br />
Pelargonium<br />
The most readily available guides to geranium cultivars are Buczaki (1998); Krauss