■(SPEC) 'Pabularia' 1888, Naudin 'Pabularia' (Charles Victor Naudin 1888, described by L. Wittmack 1898). Series Ensatae. 20" (50 cm); Said to be distinct. Larger...
■ (SPEC) Iris pallasii Fisch. ex Trevir. 1821, Fischer Iris pallasii Fisch. ex Trevir., Index Seminum (WROCL) 1821: 2 (1821). It was reported in table 2331 of ...
(Spec) Iris paradoxa forma albo lutescens Van T. 1932, Van Tubergen 'Paradoxa Albo Lutescens' ( C. G. Van Tubergen, 1932). Section Oncocyclus . 4 10" (10 25 cm). ...
(SPEC) Iris paradoxa forma choschab 1901, Van Tubergen 'Choschab' ( C. G. Van Tubergen, 1901). Section Oncocyclus Color Code W2D; Height 4 8" (10 20 cm), one flo...
■ (SPEC) Iris pariensis Welsh 1986, Welsh Iris pariensis (Stanley L. Welsh, 1986) Described in the Great Basin Naturalist (1986); considered a synonym of Iris ...
(Spec) 'Park Farm Hybrid' YYYY, Geo. W. Park Seed? 'Park Farm Hybrid' A.k.a. 'Park Farm Form', Jennifer Hewitt notes "bought by Dr. Marion Wood from an undetermin...
(Spec) 'Park Farm Hybrid' YYYY, Geo. W. Park Seed? 'Park Farm Hybrid' A.k.a. 'Park Farm Form', Jennifer Hewitt notes "bought by Dr. Marion Wood from an undetermin...
(SPEC) 'Parvicaerulea' 1931, Alexander 'Parvicaerulea' ( Edward Johnston Alexander, R. 1932). Vinicolores Section; Color Code S1L; Described by Alexander as "Flow...
(SPEC) Iris parvirosea Small aka 'Parvirosea' 1931, Small 'Parvirosea' (John Kunkel Small, R. 1931). Vinicolores Section; Color Code S9L; "Flower stalk erect and ...
(Spec) 'Paul's Gold' YYYY, Who? 'Paul's Gold' ( Who? Probaby unregistered, When? ) A yellow leaved form of Iris foetidissima. Offered by World Seeds in 2012. Regi...
(SPEC) 'Perle De Jerusalem' 1916, Van Tubergen 'Perle De Jerusalem' Van T. 1916; Subgenus Hermodactyloides; A white Iris histrio Synonym; Histrio Perle de Jerusal...
(SPEC) 'Perles Des Jardins' 1901, Van Tubergen 'Perles Des Jardins' (van Tubergen, 1901) English Iris; Color code W2L; See below: * * References References ...
■ (SPEC) Iris perrieri Simonet ex Fournier 1935, Botanical author Simonet ex Fournier Iris perrieri Simonet ex Fournier. (Marc Simonet ex P. Fournier, 1935, Savoy...
■ (SPEC) 'Perryana' 1873, Ware 'Perryana' The Florist: "One of the most striking and curious plants of its extensive family, and one which sooner or later will fi...
(SPEC) Iris persica var. mardinensis, 'Mardinensis' 1957, Davis and Hedges 'Mardinensis' (Davis and Hedges, 1957, Mardin, Turkey, 3,000 feet). Iris persica var. m...
(Spec) 'Picos de Europa' YYYY, Collector? 'Picos de Europa' As yet unregistered species collected clone from the Picos de Europa Mountain Range. Said to have clea...
■(SPEC) 'Pink Peaks' 1988, Shafer/Sacks 'Pink Peaks' (Marty Schafer and Jan Sacks, R. 1988) Versicolor, 9" (23 cm). Midseason bloom. Standards dark pink with dist...
(SPEC) 'Point Reyes Purple' 2003, Strybing Arboretum Society by Edgren 'Point Reyes Purple' (Strybing Arboretum Society by Margery Edgren, R. 2003) SPEC (douglasi...
■ (SPEC) Iris polakii Stapf 1885, Stapf Iris polakii (Otto Stapf, 1885) in Denkschr. Acad. Wien l. 20. 1885 (found in Persia) Considered by some current authors...
(SPEC) 'Polly Spout' 1985, Duval 'Polly Spout' (Rene Duval, R. 1985) I. prismatica , 12 15" (30 38 cm). Late bloom. Pale blue purple, heavily and prominently vei...
(Spec) Iris aphylla var. polonika( Blocki ex Asch. Graebn. ) Soo 1971, Blocki Iris aphylla var. polonika. (Bronislaw Blocki by way of Ascherson Graebner) Soo...
■(SPEC) 'Polychrome Pass' 2023, Schafer/Sacks 'Polychrome Pass' (Marty Schafer and Jan Sacks, R. 2023) Awaiting registration information See below: * * Ref...
(SPEC) 'Pouzdrany 1994, Tankesley Clarke 'Pouzdrany' ( Eric and Bob Tankesley Clarke, R. 1994) SPEC, 14 16" (36 41 cm). Late bloom. Standards deep yellow; falls l...
■ (SPEC) 'Powder Blue Giant' 1997, Norris 'Powder Blue Giant' (Samuel Norris by Jan Sacks and Marty Schafer, R. 1997) SPEC (cristata), 6" (15 cm). Midseason bl...
(SPEC) 'Pozne Odwiedziny' 2009, Komarnicki 'Pozne Odwiedziny' ( Lech Komarnicki, R. 2009). Seedling #01/2 BL20. SPEC (setosa), 35" (90 cm). Late to very late bloo...
■ (Spec) 'Prairie Lights' 2015, Norris 'Prairie Lights' ( Kelly Norris, R. 2014) SPEC (spuria), 29.5" (75 cm), Early bloom. Standards golden green at base fading ...
(Spec) 'Princess' 2002, Ruksans 'Princess' (Janis Ruksans, 2002), Subgenus Scorpiris (JUNO) An Iris bucharica. 10 14" (25 35 cm) April May bloom season after Reti...
■ (SPEC) Iris prismatica var. austrina Fernald 1947, Fernald 'Austrina' (Merit Lyndon Fernald, 1947) Originally described in Rhodora 49: 133 (1947). See below: ...
(SPEC) Prismatica 'Dark Maroon' 1992, Reid 'Dark Maroon' Unregistered seed strain. Iris prismaticaPursh ex Ker Gawl. "Deep maroon with white line around yellow si...
■ (SPEC) Prismatica 'Plicata' 1992, Reid 'Plicata' Series Prismaticae . unregistered seed strain. Iris prismatica Pursh ex Ker Gawl. "White flowers with pale ...
(SPEC) 'Prismatica Tullahoma' 1934, Douglas 'Prismatica Tullahoma' (Geddes Douglas, 1934, Tullahoma, Tenn.). D Sib. sic ; Color Code B1L and B7L and WW. Light bl...
SPEC) Iris proantha var. valida (S.S.Chien) Y.T.Zhao 1982, Zhao Iris proantha var. valida (S.S.Chien) Y.T.Zhao, Acta Phytotax. Sin. 20: 100 (1982). See below: ...
■(SPEC) Iris probstii C. A. Wilson 2020, Wilson Iris probstii (Carol Wilson) Original description in Phytokeys September 2020 See below: * * References ...
(SPEC) Iris pseudacorus L. acoriformis (Boreau) Dykes 1858, Boreau 'Acoriformis' (Alexandre Boreau, 1858). Series Laevigatae, Possibly synonymous with I. pseudac...
■ (Spec) 'Pseudacorus Alba' 1906, Perry 'Pseudacorus Alba'. (Amos Perry, 1906) Series Laevigatae White. (note could be a cultivar name for any white pseudacorus...
■ (SPEC) Iris pseudacorus 'Variegata' 1861, John Salter (description, Variegated foliage most prominent in Spring fading to totally green in Summer.) Gior. d'Ort....
(SPEC) Iris pseudocristata Small aka 'Pseudocristata' 1931, Small 'Pseudocristata' (John Kunkel Small, R. 1931). Vinicolores Section; Color Code R1M; Described by...
(SPEC) 'Purple Flame' 2017, Mt. Cuba Center 'Purple Flame' (Mt. Cuba Center, R. 2017). Seedling# U20020317. SPEC (versicolor), 33" (84 cm), Midseason bloom. Stan...
(SPEC) 'Purple Queen' before 1905, Van Waveren? 'Purple Queen' (Van Waveren?. before 1905) English Iris; Color Code B7D; See below: * * References Reference...