Showing posts with label variegata. Show all posts
Showing posts with label variegata. Show all posts

Monday, September 5, 2022

Bearded Iris Species for the Garden

 by Tom Waters

Most of us are quite familiar with the gorgeous hybrid bearded irises grown in so many gardens around the world. Whether dwarf, median, or tall bearded, these irises are the great show-stoppers of the springtime iris parade. Every year, hybridizers introduce new varieties, so there is a never-ending stream of new colors, patterns, and flower forms.

But before hybridizers took an interest in irises - and that was scarcely more than 100 years ago - bearded irises in gardens were much like irises in nature. Yes, bearded irises are wildflowers in Europe and western Asia, where numerous different species grow on hillsides or in valleys without gardeners to care for them.

These wild bearded irises are of interest to some iris growers, for a variety of reasons. Some of us are just attracted to wild flowers, and like to see the plants as nature made them. Others are students of iris history, and it is these bearded species that are ancestral to our modern hybrids; growing them is like tracing the roots of our family tree. Others are hybridizers, curious to explore the untapped potential of these species.

Here is just a smattering of bearded iris species that may be of interest, with an emphasis on those that have been mentioned frequently in books and articles or that have featured prominently in the development of our modern bearded iris hybrids.

Iris pallida,
a form with variegated foliage

Iris pallida
 is a European tall bearded (TB) species, with light blue-violet flowers and straight stems with branching clustered near the top. To my eye, it is the most stately of all the bearded iris species.

I. variegata, another European species, is smaller, similar to  miniature tall bearded (MTB) irises in size, with zig-zag stems and distinctively colored flowers with yellow standards and falls marked in wine-red or brick-red.

These two species are probably the sole ancestors of the diploid tall bearded irises grown in gardens in the 1800s and early 1900s. They hybridize in nature, and these natural hybrids (amoenas, bitones, and blends) were collected by flower lovers and grown in European gardens. Any modern TB iris that has yellow (or pink or orange) coloration owes its color to I. variegata.

Iris variegata


The other wild irises important in the development of the modern TBs were a range of different tetraploid plants from various locations in the eastern Mediterranean. These include I. cypriana, I. trojana, I. mesopotamica, and some named clones such as 'Amas' and 'Ricardi'. All are purple bitones and large, well-branched plants. The botanical status of these is not as clear as might be, but every modern TB descends from them in some fashion. It was hybridizers of the early 20th century who crossed the colorful diploid pallida/variegata hybrids with these large tetraploids to create the modern tetraploid TBs that have become the most popular and widely grown of all irises.

Iris aphylla

Moving down in height, we come next to I. aphylla, a species from eastern Europe that is usually similar to standard dwarf bearded (SDB) or intermediate bearded (IB) irises in height, but copiously branched, the lowest branch usually emerging right at ground level! The flowers are dark violet, and beards usually bluish. It has been used in two different ways in breeding modern bearded irises: first in breeding "black" TBs, and then later in the work of Ben Hager and others creating the tetraploid MTBs. See my earlier blog post Our Debt to Iris aphylla.

In the realm of dwarf species, the earliest known to western European gardeners was I. lutescens (once called I. chamaeiris), which is native to the warm Mediterranean areas of Spain, France, and Italy. It was the basis for our garden dwarf bearded irises until the 1950s. Its height varies, spanning the modern MDB and SDB classes and sometimes growing even a bit taller. Colors are yellows, violets, whites, and blended and bitoned versions of those colors. See my post Iris lutescens: The Dwarfs that Time Forgot.

Iris pumila seedlings

The most important dwarf species in the development of modern dwarf and median irises is the species I. pumila, native to cooler, higher regions of eastern Europe. It is quite tiny, usually only about 4 inches tall, with blooms that appear almost stemless and  spring straight from the rhizomes. It has an extensive color range, from white to blue, purple, rosy, and yellow, usually with a darker spot of violet, red, or brown. It came to the attention of iris breeders in western Europe and the US rather late, in the mid-20th century. Once "discovered," however, it became a power player in iris breeding. I. pumila, when crossed with TBs, produced the modern SDB class, and through them the modern MDBs and IBs as well. See Iris pumila: A Tiny Treasure.

Iris reichenbachii grows wild on the Balkan peninsula, where it exists in both diploid and tetraploid forms. The flowers are rather long in form, and most are either a dull yellow or a grayish violet. This species is notable in the history of iris breeding for introducing the "dominant amoena" gene into the TB gene pool through the work of Paul Cook. Most modern bicolors have I. reichenbachii back somewhere in their family tree. See The Untapped Potential of Iris reichenbachii.

Iris reichenbachii

Also worthy of note is I. reichenachii's diploid relation, I. suaveolens (once called I. mellita). It is smaller than I. reichenbachii, but otherwise similar. It is noted for its sickle-shaped leaves, in some forms edged in a narrow line of red-violet pigment.

I hope this line-up of bearded species has piqued your interest. They are nice additions to the garden for anyone who is curious about where our garden iris "came from" or is attracted to the simple beauty of wildflower irises. One sometimes finds a few bearded species available from commercial iris growers, but more are consistently available through various seed exchanges from societies like the Species Iris Group of North America, the Scottish Rock Garden Club, the British Iris Society, or the Dwarf Iris Society.

Why not "go wild" and try some bearded species this year!

Monday, December 15, 2014

Tall Bearded Iris Color Terms

By Renee Fraser

For those of us still new to the world of irises, there is much vocabulary to master. The parts of the iris flower, the different species of irises, the parts of the plant itself, and of course, the specialized terms categorizing irises into color types. Here is a quick reference, with photographic examples, of some of the major color terms you will encounter while reading about your favorite flower.



SELF
The falls and the standards of a self are the same color. These irises really stand out in a garden setting and are wonderful companions to other plants.
'Adriatic Waves' with Allium.  Photo c. Brad Collins
'Beverly Sills' with Paludosum Daisies
'Fine Wine'



PLICATA
Plicatas have stippled, dotted or stitched edges on a white or yellow ground.  I love the white ones with the pretty picotee edging the best.  

The Plicataman himself, hybridizer Keith Keppel, contacted us to remind us that the definition of a plicata as having a white or yellow ground needs to amended, "as hybridizers have worked hard and we now have lots of plicatas with pink or apricot ground, and we're working to intensify the depth of color so you can really say 'orange, and mean it!"

For more on plicatas, click here.
'Paprika Fonos' 
'Rare Treat'
'Spice Lord' Photo c. Margie Valenzuela


AMOENA
Amoenas have colored falls and white standards.  The most famous is probably, and justifiably, 'Wabash', pictured below.  To see another post on amoenas, click here.
'Wabash' Photo c. Mike Unser
'Venetian Queen'
'Dreaming of Rio' Photo c. Betty Jacobs


VARIEGATA
An iris with red falls and yellow standards.  My very favorite photo of this color, below, shows the cultivar 'Supreme Sultan' with its earliest progenitor, the original iris variegata. Can you believe what modern hybridizing has accomplished?
'Supreme Sultan' compared to the original species variegata!  Photo c. Chuck Chapman
'Decadence' at Schreiner's Iris Gardens. Photo c. Betty Jacobs
'Rogue Trader' Photo c. Betty Jacobs


NEGLECTA
A blue or purple-blue bitone iris with lighter standards.  Click here for more photos of neglectas.
'World Premier' Photo c.TBGDN @All Things Plants
'Northwest Progress' with Julia Child rose


GLACIATA
An iris with no purple anthocyanin pigment.  These irises often seem to glow.  The colors remind me of that wonderful "polychrome" daylily color.
'Glacier Blush' Photo c. Blue J Iris

'Snow Lion' Photo c. Jan Lauritzen
'If Not For You' Photo c. Stout Gardens at Dancingtree



LUMINATA
Another glowing iris type, the luminata, is an iris with a white or yellow base washed over with color so that it appears to glow from within.  More luminatas can be found here.
'Pretty Pansy'
'Wise Woman' Photo c. Brad Collins



BITONE...
This is an iris which has standards and falls of the same color,  but the standards are a lighter shade than the falls.
'Bayberry Candle' 
'Smoky Shadows' Photo c. Rick Tasco
AND 
REVERSE BITONE
A bitone, REVERSED!
'Missouri Mist'




BICOLOR
An iris of two colors.
'Adoree' Photo c. Betty Jacobs
'Smoke and Thunder' Photo c. Brad Collins
'Sweet Musette'




BROKEN COLOR
These flowers have splotches, blotches, and streaks in random patterns.  For more broken color irises, click here.

'Maria Tormena'
'Batik' Photo c. Andi Rivarola



EMMA COOK PATTERN
A darker ring of color around the falls of the flower is referred to as the Emma Cook Pattern, which is named after this famous ground-breaking cultivar.
'Conjuration' Photo c. Dan Holt
'Alsea' Photo c. Brad Collins
'Rare Coin' Photo c. Brad Collins

Many new and exciting color combinations and patterns are emerging in the world of iris hybridizing, so many that it's hard to figure out if they fit into an existing category or if new ones should be created.  I am partial to amoenas. Which is your favorite?