■ (SPEC) Iris forrestii Dykes

1910, botanical author Dykes 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:

• * References
• * Synonyms
• * Chromosome count
• * Variations
• * Hybrids
• * Distribution and Cultivation

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References

Kew Bull. 321. 1907.
The Gardeners' Chronicle 3rd. ser. 47: 418. 25 June 1910;
Fig. 24. Waddick & Zhao, Iris of China, 1992, illustrated in color;
Dykes, The Genus Iris tab. 3. 24. 1913, Observations. 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;

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Synonyms

Yunnan Iris.

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Chromosome count

2n=40, Sim 1932.

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Variations

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

Hybrids

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'.

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Distribution and cultivation

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-- BobPries - 2010-01-11