Tag Archives: stamen

Bearded Iris: ‘Spartan’

26 May

In Greek mythology, Iris was the goddess of the rainbow; the flower’s name pays homage to the many colors of irises that exist. In the language of flowers, an iris is viewed as the bearer of good tidings–a reflection of the goddess Iris’ other role as messenger to the gods. I was swayed to include irises in the garden solely because of their beautiful display–but if they also bring good luck, even better.

This year, I added a maroon-colored bearded Iris: ‘Spartan.’ Its name is a nod to ancient Greek history, though their enemies would probably not have equated Spartan warriors with good tidings. I at least hope the name means the three plants I now have in my garden will be hardy.

They are the first bearded irises I have had the pleasure to observe at close range, and though they are now at the end of their brief blooming season, I kept an eager eye on them from the moment they were first in bud:

  
Bud and emerging bloom.


Three upward-facing petals (standards); three downward-facing petals (falls), with the beards resting atop the falls.

  
Close-up of a beard, which helps to guides pollinators (bees) into the flower. With the standard removed and this section of the plant opened up a bit (right), it is easier to see how the beard–and the color pattern–point the way to the nectar at the inner base of the flower. The stamen (male reproductive organ) with its pollen-covered anther is visible at the back, just in front of another petal-like structure that is called the style arm. The style arm is a highly modified pistil (female reproductive organ). Normally it’s a tight squeeze for a bee to get to the nectar; as it heads downward, it will brush up against the anther and get dusted with pollen. When the bee visits another iris, the pollen on its back rubs off and attaches to the sticky stigmatic lip (the arched line toward the top of the style arm, below the upper crest), allowing pollination to begin.

Weekly Photo Challenge: Spring

3 May

When I think of Spring, I think of flowers and new life.  This Tulipa “Ballerina” is one the the earliest and cheeriest flowers in my garden, and a look inside the tulip reveals some essentials about plant reproduction.


This close-up focuses on the three-lobed stigma (the top-most section of the tulip’s female reproductive parts, known collectively as the pistil), which catches pollen via its sticky and fuzzy surface. The pollen then travels down the tube-like style to the ovary where  fertilization takes place (if the pollen came from a tulip plant), ultimately leading to the production of seeds. The six pollen-covered anthers (the top-most parts of the male reproductive organs, known collectively as the stamens) are blurred in the background; the stamens emanate from the base of the pistil.

Tulips are considered “perfect” flowers because they contain both male and female reproductive organs. They can self pollinate, but can also cross pollinate in the wild with the help of bees and other pollinators. Alas, most commercial tulips, including this one, are sterile hybrids. But the good thing is that tulips also reproduce via their bulbs, which allows gardeners to enjoy them anew each spring.