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■ (SPEC) Iris forrestii Dykes

1910, botanical author Dykes Forrestii Iris forrestii Dykes ( William Rickatson Dykes, 1910, Northwest Yunnan province, China); Section limniris; Series Sibericae (Sib); 14-16" (35-40 cm);Y4L; Flowers clear yellow, hafts lined brownish purple;

See below:
AO-I FORRESTII-SC.jpgAP-I FORRESTII-CLUMP-SC.jpgforestii edited-1.jpgforresti5.JPGforrestii-lautaret.jpgforrestii7.JPGforrestii70.JPGforrestii9.jpegI. Forrestii 2 n.jpgIrisforrestii01.jpgIrisforrestii02.jpgIrisforrestii03.jpgirisforrestii9.jpg


Kew Bull. 321. 1907.
The Gardeners' Chronicle 3rd. ser. 47: 418. 25 June 1910;Forrestii
Fig. 24. Waddick & Zhao, Iris of China, 1992, illustrated in color;
Dykes, The Genus Iris tab. 3. 24. 1913, Forrestii
This most pleasing Iris may be roughly described as a dwarf I. Wilsoni, from which it differs in the less glaucous leaves, which rather resemble those of I. Clarkei in possessing a glossy upper surface, in the clearer yellow, unveined flowers, in the upright and not spreading standards and in the capsules and seeds ( see Plates II and I II).
Little can be said at present of its cultivation except that it has so far succeeded to some extent under the same conditions of soil and moisture as I. sibirica and I. Wilsoni, though it is scarcely so tolerant of drought as the former proves to be when well established.
The few plants which I have already seen in flower, and which I owe to the kindness of Professor Bayley Balfour and Mr A. K. Bulley, for whom the seeds were obtained by Mr George Forrest, have been enough to prove that the segments of the flower are variable in shape. Those forms in which the blade of the falls is longest are the most handsome and desirable from the ornamental point of view. In some the blade is short and small and this defect greatly detracts from the appearance of the plant.
Van T. 1916; Wal. 1916; Starker 1938; Vilm. 1938;
A.M., R.H.S. 1924, shown by Wal. Journal of the Royal Horticultural Society 50: 1, liii. Jan. 1925;


Yunnan Iris.

Chromosome count

2n=40, Sim 1932.


Iris forrestii cultivars: 'Gelber Knirps', 'King's Forrest', 'Tetrafor', 'Yellow Apricot'.


Iris forrestii crosses
Note crosses within the subseries Chrysographes are often called Sino-Siberians
  • Iris chrysographes X Iris forrestii: 'Chrysofor', 'Chrysofor Bronze Queen', 'Chrysofor Canary', 'Chrysofor Delicata', 'Chrysofor Gloriosa', 'Chrysofor Maggie', 'Chrysofor Marion', 'Chrysofor Nancy', 'Chrysofor Peggy', 'Chrysofor Primrose Queen', 'Chrysofor Purpurea', 'Chrysofor Sunrise', 'Chrysofor Thelma', 'Cleeton Cross'.
  • Iris forrestii X Iris chrysographes: 'Gamma'.
  • Iris delavayii X Iris forrestii: 'Delfor', 'Wid-Wid'.
Crosses that are between the series Sibericae and the series Californicae are often referred to as Cal-Sibes.
  • Pacific Coast Hybrid X Iris forrestii: 'Dougbractifor'.
  • Iris bulleyana X forrestii: 'Epsilon'.
  • Iris forrestii X Iris bracteata: 'Forbra'
  • Iris forrestii X Siberian Hybrid : 'Foretell'.

Distribution and cultivation

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-- Main.RPries - 2010-01-11
I Attachment Action Size Date Who Comment
AO-I_FORRESTII-SC.jpgjpg AO-I_FORRESTII-SC.jpg manage 23 K 20 Sep 2010 - 11:18 UnknownUser Lorena Reid photo
AP-I_FORRESTII-CLUMP-SC.jpgjpg AP-I_FORRESTII-CLUMP-SC.jpg manage 54 K 20 Sep 2010 - 11:19 UnknownUser Lorena Reid photo
I._Forrestii_2_n.jpgjpg I._Forrestii_2_n.jpg manage 158 K 08 Sep 2015 - 08:59 Main.irisdelabaie Photos by J.C. Jacob, Iris de la Baie
Irisforrestii01.jpgjpg Irisforrestii01.jpg manage 47 K 18 Sep 2014 - 20:00 Main.TLaurin Photo scanned from the Adele and Lewis Lawyer slide collection
Irisforrestii02.jpgjpg Irisforrestii02.jpg manage 47 K 18 Sep 2014 - 20:02 Main.TLaurin Photo scanned from the Adele and Lewis Lawyer slide collection
Irisforrestii03.jpgjpg Irisforrestii03.jpg manage 67 K 18 Sep 2014 - 20:04 Main.TLaurin Photo scanned from the Adele and Lewis Lawyer slide collection
forestii_edited-1.jpgjpg forestii_edited-1.jpg manage 55 K 12 Jan 2010 - 17:41 UnknownUser Dykes plate
forresti5.JPGJPG forresti5.JPG manage 57 K 01 Oct 2023 - 02:07 Main.TLaurin Photo by John Jearrard -Jearrad's Herbal-United Kingdom
forrestii-lautaret.jpgjpg forrestii-lautaret.jpg manage 197 K 25 Aug 2020 - 09:14 UnknownUser Jardi botanique du Lautaret (France) - photo Iris en Provence (2020_08_14)
forrestii7.JPGJPG forrestii7.JPG manage 115 K 26 Dec 2023 - 14:53 Main.TLaurin Photo by Cascadia Iris Gardens
forrestii70.JPGJPG forrestii70.JPG manage 377 K 26 Dec 2023 - 14:53 Main.TLaurin Photo by Cascadia Iris Gardens
forrestii9.jpegjpeg forrestii9.jpeg manage 119 K 02 Feb 2023 - 21:36 Main.TLaurin Photo by Wild Ginger Farm
irisforrestii9.jpgjpg irisforrestii9.jpg manage 138 K 22 Apr 2021 - 21:13 Main.TLaurin Photo by Christine Skelmersdale-Broadleigh Gardens-United Kingdom
Topic revision: r21 - 26 Dec 2023, TLaurin
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