Eastern Illinois University The Keep Faculty Research & Creative Activity Biological Sciences January 2008 Vegetative anatomy of Calypsoeae (Orchidaceae) William Louis Stern Florida International University Barbara S. Carlsward Eastern Illinois University,
[email protected] Follow this and additional works at: http://thekeep.eiu.edu/bio_fac Part of the Biology Commons Recommended Citation Stern, William Louis and Carlsward, Barbara S., "Vegetative anatomy of Calypsoeae (Orchidaceae)" (2008). Faculty Research & Creative Activity. 265. http://thekeep.eiu.edu/bio_fac/265 This Article is brought to you for free and open access by the Biological Sciences at The Keep. It has been accepted for inclusion in Faculty Research & Creative Activity by an authorized administrator of The Keep. For more information, please contact
[email protected]. LANKESTERIANA 8(1): 105-112. 2008. VEGETATIVE ANATOMY OF CALYPSOEAE (ORCHIDACEAE) WILLIAM LOUIS STERN1 & BARBARA S. CARLSWARD2,3 1Department of Biological Sciences, Biscayne Bay Campus, MSB 357, Florida International University, North Miami, Florida 33181, USA 2Department of Biological Sciences, Eastern Illinois University, Charleston, Illinois 61920-3099, USA 3Corresponding author:
[email protected] ABSTRACT. Calypsoeae represent a small tribe of anatomically little-known orchids with a wide distribution in the Western Hemisphere. Leaves are present in all genera, except Corallorhiza and Wullschlaegelia both of which are subterranean taxa. Stomata are abaxial (ad- and abaxial in Aplectrum) and tetracytic (anomocytic in Calypso). Fiber bundles are absent in leaves of all taxa examined except Govenia tingens. Stegmata are present in leaves of only Cremastra and Govenia. Roots are velamentous, except in filiform roots of Wullschlaegelia. Vegetative anatomy supports a relationship between Wullschlaegelia and Corallorhiza but does not support the grouping of winter-leaved Aplectrum and Tipularia nor proposed groupings of genera based on pollinarium features.