Tuesday, 24 April 2007

Comparison of Crozy and Italian Groups

We have two old prints to illustrate the differences between the Crozy Group and the Italian Group of Cannas. The prints date from the late 1800's when these two groups were being created and perpetuated.

The two prints together illustrate so well the difference between the Crozy Group and the Italian Group that followed. The first print shows the narrower petals of the gladiolus-type French canna and the right shows the so-called, orchid-type 'Italian Job', with petals (really staminodes) that are large, showy, crinkled edges and inclined to be a little floppy (flaccid), showing their descent from the USA species C. flaccida. In addition, the lip (labellum) is larger than the petals.


Comparison of the two basic canna types

CharacterCrozy GroupItalian Group

Cultivars

Crozy, Alipore, Gladiolus or French Dwarf cannas, x generalis.Italian, Iris, Orchid, Burbank, or Giant flowered cannas, x orchiodes.
Flower
Diameter:Medium to large, less than 12.5cmVery large, 12.5cm to 21cm
Colour:ManyBright yellow to deep red striped or splashed. Not pink or clear white.
Petals:Narrow, erect or ascending.Reflexed after about the first day.
Tube:About 1.25cm cm. long, not longer than sepals.About 2.5 cm. or more, much longer than sepals.
Staminodia:Narrow to broad, mostly erect or strongly upright, well separated in outline. Space between staminodes.Broad and soft with flowing outline, lip funnel-form at the base. Staminodes make a full circle when formally arranged.
Fertility
Pollen:50-80%40-60%
Seed:1-19 seeds per capsuleSterile

References

Khoshoo, T.N. & Guha, I. - Origin and Evolution of Cultivated Cannas. Vikas Publishing House.

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