Showing posts with label Carex. Show all posts
Showing posts with label Carex. Show all posts

Thursday, January 17, 2013

Showy Lady Slipper


 
 
I have been meaning to do this drawing for awhile and actually started it in July right after these orchids flowered in June in a fen in Northeast Ohio. While I worked in Ohio I was responsible for monitoring this population of showy lady slippers (Cypripedium reginae) on an annual basis. Showy lady slipper flowers are about the size of a chicken egg making them one of the largest of the native orchids - it is also covered with hairs that can cause poison ivy-like dermatitis on some people. I never had an issue with orchid hairs but I have with the poison sumac (Rhus vernix) that shares the same habitat. Besides the poison sumac the fen was always a very enjoyable place to spend the day counting orchids and botanizing. Also in this illustration are two sedge species Carex leptalea (3 flowering culms) and Carex interior (1 flowering stem) that are commonly found with the orchids.

This is 16"X20" and done with Faber Castell Polychromos colored pencils - I had to scan it in four pieces and splice them together resulting in some inconsistencies in color.
 

Friday, April 27, 2012

Sedges

Anyone who owns a “Flora of …” field guide has surely noticed that the Genus Carex can easily chew-up 50 plus pages of dichotomous key without the help of pictures or line drawings.  It is intimidating.  Ohio is home to more than 160 different species of sedges easily making it the largest genera in the flora.  One of the primary characteristics used to identify sedges to species are the perigynia, an inflated sac containing the achene (seed).  Usually a 20X hand lens is needed to observe the characteristics of these structures as most of them are around 3-4mm long.  I have only been interested in sedges for a few years, but from my first look through the hand lens I was struck by the beauty of sedges especially when magnified.

Here is a banner of 11 different perigynia all from sedges native to northeast Ohio – can you identify any of them? 



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