Showing posts with label asteraceae. Show all posts
Showing posts with label asteraceae. Show all posts

Wednesday, September 29, 2010

Aster simplex

Here are a few shots from this morning's run.  Aster simplex, or panicled aster.  The more current botanical name for this plant is actually Symphyotrichum lanceolatum, but its older name can still be applied.  As I've mentioned before, I think the word 'Aster' is decidedly less of a mouthful than Symphyotrichum. 

 

This specimen was found growing along an unmowed roadside and is very common this time of year.  It blooms in mid to late summer until the first frost.  It's not as showy as other asters, but you can buy seeds of the native plant from various sources.  To me, it's a great addition to a wildflower meadow and the small white flowers would be a great alternative to baby's breath (Gypsophila) for cut flower arrangements. 


Finally, like all members of the Asteraceae family, this flower structure is composed of disc florets and ray florets.  The disc florets are the very small yellow petals that compose the inside 'eye' of the flower.  They are the seed-producing flowers, whereas the ray florets (in this case, the white petals) are decorative; primarily present to attract pollinators.

Monday, September 13, 2010

Helianthus annuus

I was in Maryland last week, scoping out plant nurseries and setting up accounts when I saw a flash of yellow on a hillside in the distance.  As I approached the field closer, it was evident that I had stumbled upon a sunflower farm. 


The last time I saw this many sunflowers growing in the landscape was in 1996, when I was driving through Kansas.  It's hard not to think, Kansas=Corn, but Kansas is one of the top three sunflower crop producing states in the country (along with North and South Dakota).

Sunflowers were first cultivated by Native Americans at around 3000 BC.  Over the years, the plant  has been hybridized so that it yields as many seeds as possible, since that is its valuable resource.  However, the specimens above have fairly large ray florets and the area of disc florets is relatively small, leading me to speculate that these plants may be farmed for cut flowers, and not for sunflower seeds.  Though I just don't know...Maybe the next time I'm nearby I will go and ask!