From “Germanicas” in The World of Irises, edited by Bee Warburton and Melba Hamblen:
“Modern science has shown that most forms of I. germanica (the nomenclatural type of the entire genus), formerly considered a species, are natural intermediate hybrids of unknown origin. The Germanicas are cold-hardy plants of supreme vigor and unequaled persistence. A quick drive through any European or Balkan village shows that ‘Grandma’s Flags’ are still alive and well….
“The Randolphs (1959) brought back a sampling of these plants from the Balkans, Turkey and India, and from several European countries, all much alike — coarse, robust, bitone blue purples. Nothing is known of their origin, or of that of other natural intermediate hybrids that flourish in warmer climates: the whites, Albicans, Kashmiriana and Florentina (which also has a blue form), and the bright red-purple Kochii. Albicans was spread from Yemen throughout the Mediterranean area and into Spain by the Mohammedans, who planted it at their grave sites. It has been found in the Sierra Madre region of Mexico, presumably introduced by the Spaniards.
“These irises left their mark in the art of early times, in the company of angels and Madonnas, where we can remember them with affection and wonder at the changes our modern efforts have wrought.”
From “Bicolors — Bitones — Amoenas” in The World of Irises, edited by Bee Warburton and Melba Hamblen:
“When an iris fancier hears the term bicolor, in his mind’s eye he sees Amigo’s Guitar, Barcelona, Gala Madrid, Lord Baltimore and other well known irises in this exciting color class. But these varieties are of comparatively recent vintage with pedigrees dating back to the famous [Paul] Cook progenitors of the late 1950s and the 1960s.
“Historically, bicolors, bitones and amoenas were among the first recorded irises….
“[Jean-Nicolas] Lemon, one of the first to grow irises from seeds, listed in his 1840 catalog diploid varieties such as National, light wisteria standards, maroon falls, and Victorine, white standards flecked purple, with falls of blackish purple. During the 1880s [Peter] Barr introduced Perfection, a bitone in light violet and prune purple; [George] Reuthe produced Maori King, an excellent variegata; and [James] Veitch raised Thorbecke, white standards overcast with pale violet, purple falls with reddish bronze reticulations on the hafts….”
Hello!
This is the eighth of ten posts featuring photographs of irises that I took at Oakland Cemetery toward the end of April. The previous posts are:
Nature’s Palette: Exploring Iris Colors, Their Culture, and Their History (1 of 10);
Nature’s Palette: Exploring Iris Colors, Their Culture, and Their History (2 of 10);
Nature’s Palette: Exploring Iris Colors, Their Culture, and Their History (3 of 10):
Nature’s Palette: Exploring Iris Colors, Their Culture, and Their History (4 of 10);
Nature’s Palette: Exploring Iris Colors, Their Culture, and Their History (5 of 10);
Nature’s Palette: Exploring Iris Colors, Their Culture, and Their History (6 of 10);
Nature’s Palette: Exploring Iris Colors, Their Culture, and Their History (7 of 10).
The irises in the galleries below would be classified as bitone irises, “bitone” referring to a color scheme where an iris’s standards are a lighter tint of the color hue of the falls. We would likely refer to this one, for convenience, as a purple bitone — which would reflect the fact that the falls (and the most dominant color visually) appear to be dark purple, while the standards are a lighter variation of purple, light enough in this case that we could consider the standards pink.
But of course our perception of single colors actually exists on a continuum, and any given color — especially in tonally complex renderings like photographs of irises — expresses itself as a shortcut for the colors that are actually there. When I pass a color picker over either the standards or the falls in this image, for example, Lightroom detects two colors in opposing amounts. The standards and the falls both contain combinations of magenta and purple, with the standards containing more purple than magenta, and the falls containing more magenta than purple. While this may seem like an examination of color suitable for pixel peepers or color nerds, it’s useful in this case to confirm the iris’s color classification. The same colors are present in both the standards and falls, but their relative concentrations result in a flower whose standards appear much lighter in color than the falls — the very definition of a bitone iris, and something that distinguishes irises like this from “bicolor irises” where the color pairs are in different tonal ranges entirely, such as red and yellow.

The texture of the flower also contributes to these color contrasts. Note the difference between the visual (and tactile, if you could touch it) appearance of the standards versus the falls. The standards contain thinner, more translucent petals, that translucence allowing light to pass through the petals, giving them a bit of glow while desaturating their colors. The falls, on the other hand, are much thicker in texture. That thickness reflects the different cellular structure of the falls, where cells are more densely packed than those of the standards, simultaneously creating a cottony appearance while reflecting more saturated colors into the camera’s sensor. The camera effectively “sees” these cells, capturing not only all the subtle color variations, but allowing us to interpret the image as containing the significant differences in texture that are present in the flower itself.
Some comparisons between irises I photographed can help us see how iris enthusiasts evaluate them for color classifications. I’ve previously posted examples of blends (irises with a combination of two or more colors blended together); amoenas (irises with white or near-white standards with colored falls); and plicatas (irises with stippled, dotted, peppered, or stitched markings contrasting with a lighter ground color). Here I’ve placed those three sequentially and added one of the bicolor images to show the differences: a blend, amoena, and plicata from my previous posts followed by a bitone from this post.




Each of these irises represents distinct threads in the development of iris cultivars, much of which occurred in the twentieth century, with the plicata representing the most sophisticated (and most recent) technical accomplishment. They are all visually and genetically much different from irises where a single color dominates — often referred to as “self” irises — such as the predominately purple and blue irises I shared in my first and second posts.
Note, however, what their visual appearance also implies about their genetic similarities: among other things, the amoena and the plicata share similarly colored and textured standards; the amoena and the bitone show both soft and dark purple falls; and the pink and light purple bitone colors also appear in the blend. These isolated examples, of course, could be extended to other irises — some of which you can see by clicking on the links in the excerpts at the top of this post — all of which reveal that their underlying genetic heritage has enabled iris breeders to produce irises in a wide variety of shapes and colors that we still immediately recognize as members of the Iris genus.
This enormous variety also means that horticulturalists planning gardens or memorials like those at Oakland Cemetery can choose irises to match the symbolic representations they wish to create. The plicatas and amoenas, as previously described, were used to build and populate plots where their colors blended smoothly with the stone of surrounding memorial structures. These pink and purple bitones, on the other hand — with taller stems and more saturated colors — are planted to capture attention and direct your eyes or your travels to other sections of the property. Their appearance, color harmonies, contrasts with their surroundings, and even fragrance may halt you briefly, before leading you to follow sidewalks or mount steps to a nearby site of contemplation or memorialization.
Thanks for reading and taking a look!























