See Show Calender


â–  (SPEC) Iris trojana Kerner ex Stapf

1887, Botanical author Kerner ex Stapf

Iris trojana Kerner ex Stapf. (Anton Joseph Kerner von Marilaun, 1887, Western Asia Minor); Section Iris. TB; Height 24-28" (60-70 cm); Midseason bloom. Color Code B3M; standards pale blue, falls violet purple, beards white tipped yellow. Separated from the gemanicas by its branching below the middle of the stalk; strong sweet fragrance.

See below:

Photo by Mary Hess-Bluebird Haven Iris GardenPhoto by Mary Hess-Bluebird Haven Iris GardenTrojanaPhoto by Don McQueen-taken at Royal Botanical Garden-Hamilton-Ontario-CanadaPhoto by Don McQueen-taken at Royal Botanical Garden-Hamilton-Ontario-CanadaTrojana from Dykes The Genus Iris


Kerner ex Stapf in Verh. Zool. Bot. Gesell. Vien. 649. 1887; Leicht. 1898;
J.R.H.S. 15: 3. Oct. 1889;
H.C., R.H.S. 1916; AA clix.;
Farr 1912;
Dykes, The Genus Iris 176. 1913,
Rootstock , as in I. germanica.
Leaves , as in I. germanica, but longer; distinctly narrow for so large a plant.
Stem , 2 ft. or more in height, bearing about six or eight or more flowers in a terminal head of two flowers, and three lateral shoots with 1-2 flowers. The buds are of a long, pointed oval shape.
Spathe valves flushed with purple, scarious only at the top, not so divergent as in I. Biliotti, 2 1/2-3 in. long, narrow.
Pedicel , short.
Ovary , 3/4 in. long, rounded trigonal with six very shallow grooves.
Tube , about as long as the ovary, green with purple stripes.
Falls ; under surface, spotted on the haft, as in Biliotti, but with the spots more conspicuous along the median line than at the edges. Upper surface, obovate cuneate, of a bright red purple, the haft bearing numerous thin chestnut veins on a whitish ground. The beard is in front white tipped with yellow but becomes wholly yellow at the base.
Standards , the obovate pale blue blade narrows somewhat sharply to the short canaliculate haft, which is faintly veined with brown purple.
Styles , short and broad of a pale purplish colour with more deeply coloured keel.
Crests , pointed triangular, with serrated outer edge, purple with blue veins.
Stigma , entire, rounded.
Filaments , white.
Anthers , very long, cream.
Pollen , cream.
Capsule of a long ellipsoid shape with inconspicuous grooves on each side, very bluntly trigonal.
Seeds , wedge-shaped, light brownish, much resembling those of I. pallida.
By an oversight due apparently to the fact that the original description of the species contained no express mention of the beard I. trojana was placed by Baker (Hdk. p. 18) among the Apogons. Struck by the description as being obviously that of a Pogoniris, I applied to the Vienna Botanic Garden and was most kindly supplied by the Director with a number of plants. When these arrived, it was at once obvious that I. trojana was a Pogoniris. The flowers proved to agree exactly with the original description. This fine sweet-scented Iris is fairly common in gardens under the mistaken name of I. cypriana, which is a much rarer plant. I. trojana is easily distinguished by the long, narrow, purple-flushed buds and by the broader foliage. Cultivation is easy.
Wing 1920; Berry 1929.;


Trojan Iris, Asiatica, Asiatica trojana, Cypriana, Trogana, Troyana; mixed with Iris cypriana in the trade.

Chromosome counts


Iris trojana cultivars: 'Trocelestial', 'Tromagnifica', 'Tropallida', 'Trosuperba'.


Iris trojana crosses:

Iris lutescens X Iris trojana: 'Gentius'

Iris trojana X Iris germanica: 'Angelo', 'Anne Bullen', 'Lady Grey', 'Mistress Ford',

Iris pallida X Iris trojana: 'E. H. Jenkins', 'Morwell'

Iris trojana X tall bearded hybrid: 'Ann Page', 'Bertrand', 'Canopus', 'Cardinal', Conchobar', 'Glamour', ';Gules', 'Hermione', ';Isoline', 'Julia Marlowe', 'Mme. Emma Nevada', 'Morning Splendor', 'Nimbus', 'Nine Wells', 'Patience', 'Pegasus', 'Pendragon', 'Polar Light'.

Tall bearded hybrid X Iris trojana: 'Accentué', 'Alamo', 'Dulcinea, 'Elinor Blossom', 'Minos', 'Porcelain', 'Queen Mary', 'Regan', 'Rita', 'Rotorua', 'Sarpedon', 'Shalimar', 'Sir Galahad', 'Soledad', 'Speed', 'Tenebrae', 'Titan', 'Tropic Seas', 'Trostringer', 'Tuscany', 'Yeoman'.

Distribution and Cultivation

Dykes in The Genus Iris notes "Distribution Unknown. The original plants, on which the description was based, were introduced into the Vienna Botanic Garden by Sintenis, presumably from the Troad. By the kindness of Dr R. Wettstein I have been able to cultivate for several years specimens of this original importation,

Please do not enter images that are not your own without owners' permission, this is against Wiki policy

"Although the Encyclopedia is free to all, it is supported by Emembership in AIS, If you would like to help sustain this reference, for $15 you can become an Emember, click here."

Interested in Iris Species? Please visit the: Species Iris Group of North America website.

To Report errors do not use comment box but contact the Iris Encyclopedia Photo Manager or Iris Encyclopedia Manager Comment box is reserved for added information about the topic.

Your Observations Are Valued. Please make note of bud count, branching, purple based foliage and bloom time, etc. Because these are affected by climate, note date, year and geographic location and write these and other comments in the comment box below.


-- BobPries - 2010-02-08
I Attachment Action Size Date Who Comment
Itrojana01.JPGJPG Itrojana01.JPG manage 54 K 25 Nov 2014 - 14:04 TerryLaurin Photo by Mary Hess-Bluebird Haven Iris Garden
Trojana.JPGJPG Trojana.JPG manage 72 K 30 Jan 2011 - 16:31 IrisP  
Trojana_from_Dykes.jpgjpg Trojana_from_Dykes.jpg manage 49 K 20 Apr 2010 - 13:58 BobPries Trojana from Dykes The Genus Iris
itrojana02.JPGJPG itrojana02.JPG manage 78 K 19 Aug 2021 - 19:27 TerryLaurin Photo by Mary Hess-Bluebird Haven Iris Garden
trojana1.JPGJPG trojana1.JPG manage 295 K 20 Feb 2019 - 23:44 TerryLaurin Photo by Don McQueen-taken at Royal Botanical Garden-Hamilton-Ontario-Canada
trojana2.JPGJPG trojana2.JPG manage 220 K 20 Feb 2019 - 23:46 TerryLaurin Photo by Don McQueen-taken at Royal Botanical Garden-Hamilton-Ontario-Canada
Topic revision: r23 - 19 Aug 2021, TerryLaurin
This site is powered by FoswikiCopyright © by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding Iris Wiki? Send feedback