Sunday, March 25, 2018

SHORTIA GALACIFOLIA 

OCONEE BELLS


Most botanist know the legendary story of Shortia galacifolia, or Oconee Bells. The plant was originally discovered and collected in 1788 by French botanist Andre Michaux. His unnamed specimen was stored in a French herbarium until it was noticed by the American botanist Asa Gray in 1839. Asa named the plant for another American botanist, Charles W. Short. When Asa Gray returned to the states he was determined to find the beautiful Oconee Bell plant. However, his main clue, “in the high mountains of Carolina”, turned out to be very misleading. Asa and many other botanists searched high mountain peaks, such as Roan Mountain, Grandfather Mountain and Mt. Mitchell, for years with no luck. Forty years later in 1877, a 17-year-old lad named George Hyams found the plants growing along the Catawba River near Marion, North Carolina. Eventually, word got back to Asa Gray that the plant had been rediscovered. The ecstatic Gray met with George Hyams and finally saw the elusive plant in person but he died never seeing the plant in bloom. Gray requested that his grave in Cambridge, Massachusetts be covered in Oconee Bells.

American Botanist  - Asa Gray (1870's)
Photographer Unknown; Public Domain


The genus Shortia is within the family Diapensiaceae. There are only five species known worldwide. All five species are mountainous and relatively rare in occurrence. Four species are in Asia and the fifth species is endemic to the Southern Appalachian Mountains of the eastern United States.  The American species has two variations; Shortia galacifolia Torrey and Gray var. galacifolia and S. galacifolia Torrey and Gray var. brevistyla Davies. 

Both variations are found within North Carolina and grow along the moist banks and slopes of streams in heavy shade created by Rhododendron shrubs.  There is often a clear transition between Shortia and Galax urceolata plants as one moves up slope from a stream. Shortia is on the lower, moister, more heavily shaded parts of the slope. As one moves up the slope, away from the stream, into the dryer and less shaded higher areas it is replaced by Galax, which also happens to be a member of the family Diapensiaceae. Shortia’s specific epithet “galacifolia” is due to the resemblance of Shortia’s leaves to those of its cousin Galax. Both have clustered, shiny, rounded leaves with serrated to crenate margins. The leaves of both species can also look reddish or bronzed. However, if you look closely, Shortia’s leaves are pinnately veined while the leaves of Galax are palmately veined.

 

Shortia galacifolia leaf, note the pinnate veination.

Galax urceolata leaves, note the palmate veination.

Shortia galacifolia Torrey and Gray var. galacifolia was the original species found by Michaux. It is often referred to as Southern Shortia. The original collection site was destroyed and flooded by the creation of Lake Jocassee. However, wild populations still exist in Jackson and Transylvania Counties in N.C., Oconee and Pickens Counties in South Carolina, and Rabun County in Georgia. The best place to see Oconee Bells is along the Oconee Bell Nature Trail at Devils Fork State Park in South Carolina. The plants bloom early in the spring from mid-March to April.



Shortia galacifolia Torrey and Gray var. galacifolia Photos taken at Devils Fork State Park along the Oconee Bell Nature Trail


Shortia galacifolia Torrey and Gray var. galacifolia or Southern Shortia



Shortia galacifolia Torrey and Gray var. galacifolia, showing the typical growth habit of the species.


S. galacifolia Torrey and Gray var. brevistyla Davies is only found in McDowell County, N.C. It is often called Northern Shortia. The sites are protected and closed to the public. As its specific epithet implies it has a shorter style than S. galacifolia var. galacifolia. Northern Shortia has styles 6-10mm while the Southern Shortia has styles 12-18 mm in length. Also, per Flora of North America, Northern Shortia has shorter corolla lobes, 14-17mm, and Southern Shortia has corolla lobe 16-25 mm in length.



S. galacifolia Torrey and Gray var. brevistyla Davies,
or Northern Shortia, at a protected site in McDowell County, N.C.
Close up of a Northern Shortia flower with its shorter corolla
lobes and stigma relative to the Southern Shortia variation.

Northern Shortia

Side view of opening Northern Shortia flower.

Nice cluster of Northern Shortia flowers at undisclosed McDowell County site.



Clemson naturalist Patrick McMillan once said, “So Oconee Bells was found by a man who didn’t name it. It was named for a man who never saw it, by a man who couldn’t find it!”


References:

1. Radford, Albert Ernest, Harry E. Ahles, and Clyde Ritchie Bell. Manual of the Vascular Flora of the Carolinas. Chapel Hill, NC: U of North Carolina Press, 1983. Print.

2. Weakley, Alan S. Flora of the Southern and Mid-Atlantic States. Chapel Hill, NC: U of North Carolina Herbarium, North Carolina Botanical Garden, U of North Carolina, Chapel Hill, 2015. Print.

3. Flora of North America Editorial Committee, eds.  1993+.  Flora of North America North of Mexico.  20+ vols.  New York and Oxford. Print.

4. Wildflowers of the United States. (n.d.). Retrieved March 25, 2018, from http://uswildflowers.com/detail.php?SName=Shortia galacifolia.

5. S. (2011, February 24). O is for Oconee Bells. Retrieved March 25, 2018, from https://www.youtube.com/watch?v=QTxtvAXSW1A

6. All photographs are taken by and are the property of Tracie Jeffries unless otherwise noted.


3 comments:

  1. We, several botanists, had a discussion relative to the Rabun County, GA population a while back. I observed a population, not absolutely sure the only one in the county, that was along an old road and had spread some since it was introduced there. It was healthy but of limited extent. To me, it does not look like the normal habitat or place one would expect a natural population. So, Is there a conclusive population extending along a stream bank somewhere in Rabun County, GA or elsewhere that was a natural one (not naturalizing one)? J. Dan Pittillo

    ReplyDelete
  2. Hi Dan,

    I was not aware that there were questions about the Rabun Co., GA population. I have not visited this population myself. But, when doing research for my article I read a paper published in the 1979 [95(1)] 'Journal of the Elisha Mitchell Scientific Society' called the Geographical
    Distribution of Shortia galacifolia in Oconee and Pickens Co. S.C.. At the end of the article they listed other "endemic" populations. The article specifically mentioned Rabun Co. GA. Also, a 1995 Georgia Natural Heritage report mentions Rabun Co. and the Shortia population growing along a mountain stream under Rhododendron, which is a typical habitat. However, after reading your e-mail and researching further I saw several blogs and media articles that questioned the authenticity of the population, but nothing within my limited scientific literature search.

    Tracie Jeffries

    ReplyDelete
  3. Has anyone seen this same population of an old road bank and a few others near this site? If there is a natural population in Rabun Co, GA, along a stream, can you describe its extent and has a specimen been made for that site?

    ReplyDelete

Note: Only a member of this blog may post a comment.