Showing posts with label Spiranthes tuberosa. Show all posts
Showing posts with label Spiranthes tuberosa. Show all posts

Friday, August 17, 2012

Blooms on the Dry Prairie

Growth on the prairies is mimicking that of the Prairie Garden.  That’s encouraging, since that’s how I had hoped my artificial creation would act.  However, the actual growth is less than encouraging.  This area of short grass is typically dotted with bright color at this time in the season.  The color this year is almost entirely pale green.

Some plants are actually doing well despite the odd weather.  Little Ladies’ Tresses, Spiranthes tuberosa, is looking very well.  Its full height of about six inches is just not enough to make it very noticeable.

Petals of the Spiranthes flower never look quite real.  I always imagine them as being made of ice crystals or clear plastic.

Whorled Rosinweed blooms are a bright yellow that should be visible from a considerable distance.

Unfortunately, instead of their normal five foot height, the plants are averaging closer to 18 inches.  The plants are also producing just a single bloom instead of the usual half dozen.  The flowers are well hidden by the grass.

Flowering Spurge is similarly diminished this year.  The plants normally top out around three feet tall.  These are lucky to reach a foot.

Bluehearts have remained relatively unaffected.  Height is slightly reduced, but the flower spike is just as full as ever.  Their blooms are too small to be easily seen at a distance, so they don’t do much to brighten the landscape.

As with those in the Prairie Garden, the Round-podded St. Johnswort is producing a new set of blooms.  The recent rains must have really invigorated this species.

Rose Pink continues to bloom.  This species has been blooming for the last couple of months and shows no signs of slowing.  Some of the early bloomers are already drying down and releasing seed.

Partridge Pea is blooming at a normal rate.  This species has the potential to form tall plants with many flowers, but Blue Jay Barrens specimens are always small and only produce one or two flowers.  I may collect a few seeds from this annual plant and see how large the plants get when given good soil and plenty of water.

Hairy Small-leaved Tick Trefoil always does well and this year is no exception.  The flowers are not large enough to make a showy display, but there will be enough sticky seed pods this fall to cover a person’s pants legs as they walk through the field.

Another specimen of the same Trefoil species appears to have grown with its flower stalks fused.  There are always oddities of some sort showing up in the fields.  I would prefer to find oddities that turned out to be species I have not yet encountered.  It’s getting to be too late in the season for the prairies to suddenly burst with color.  Next year has got to bring a better display.

Tuesday, August 17, 2010

Spiranthes Orchid Time

I used to think of orchids as being rather rare and requiring an almost climate controlled environment. Although many do require specialized habitats, most species have proven to be quite hardy and capable of enduring extreme conditions. There have been 14 orchid species identified at Blue Jay Barrens. My favorite genus, Spiranthes, is represented by five species. Late summer and fall is a prime blooming time for these species and I’m always anxious to find the first flower spikes. Pictured is Slender Ladies' Tresses, Spiranthes lacera.

It takes a keen eye to spot a Spiranthes flower stalk hidden in the tall grass. The tiny flowers line up in a spiral around the central shaft of the stalk. Stalks seldom exceed 12 inches in height and are usually much shorter.

Most of the summer flowering Spiranthes are leafless at bloom time. Basal leaves, which have already done their job of recharging the plant’s energy supply, have withered and disappeared. Leaves on the stalk are nothing more than small scales and are barely visible.

The flowers of Spiranthes lacera are quite variable. In the past, this variability has been used to break the plants into two distinct species. The typical flower displays a lime-green throat. The type pictured is known as variety gracilis.

Spiranthes species produce some of the most fragile looking flowers of the plant world. They always remind me of some sugar based confectioners creation. These delicate blooms with pure white throats belong to Little Ladies' Tresses, Spiranthes tuberosa.

Spiranthes tuberosa produces a loose spiral spike that often lies over and sprawls in the grass. The bloom is so sparkling white that it’s often impossible to see any details in bright sunlight.

The basal leaf clusters of the presumed Lesser Ladies' Tresses, Spiranthes ovalis, have developed flower stalks. It won’t be long before the flowers bloom and I will be able to confirm my identification.