Platanthera clavellata - (image 1 of 4)
Taxonomy
Family: Orchidaceae
Habitat
Bogs, mesophytic swamps. Moist, peaty, sandy prairies.
Associates
On swale borders near Lake Michigan with Comandra umbellata, Pycnanthemum virginianaum, Sceleria triglomerata, Solidago graminifolia nuttallii, Tradescantia ohiensis, Zizia aurea.
Distribution
Eastern half of US.
Morphology
Herbaceous perennial monocot. Cauline leaf solitary or with a few reduced leaves above, lanceolate to lance-ovate or ovate. Flowers greenish-white; lip entire, not fringed; spur long, club-shaped.
Notes
Flowers early July to late August
Wetland indicator: Obligate
Also known as Green Wood Orchid, this little orchid is difficult to find in bloom when it is often obscured by the surrounding vegetation.
References
Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.
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Michael Hough © 2005 |