Eastern Illinois University The Keep Faculty Research & Creative Activity Biological Sciences January 1997 Comparative leaf anatomy and systematics in Dendrobium, sections Aporum and Rhizobium (Orchidaceae) Barbara S. Carlsward Eastern Illinois University,
[email protected] William Lois Stern University of Florida Walter S. Judd University of Florida Terence W. Lucansky University of Florida Follow this and additional works at: http://thekeep.eiu.edu/bio_fac Part of the Biology Commons Recommended Citation Carlsward, Barbara S.; Stern, William Lois; Judd, Walter S.; and Lucansky, Terence W., "Comparative leaf anatomy and systematics in Dendrobium, sections Aporum and Rhizobium (Orchidaceae)" (1997). Faculty Research & Creative Activity. 260. http://thekeep.eiu.edu/bio_fac/260 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]. Int. J. Plant Sci. 158(3):332-342. 1997. C 1997 by The Universityof Chicago. All rightsreserved. 1058-5893/97/5803-0012$03.00 COMPARATIVELEAF ANATOMY AND SYSTEMATICS IN DENDROBIUM, SECTIONSAPORUM AND RHIZOBIUM (ORCHIDACEAE) BARBARA SUE CARLSWARD,* WILLIAM LOUIS STERN,I't WALTER S. JUDD,t AND TERENCE W. LUCANSKYt *Departmentof Ecology, Evolution and Marine Biology, Universityof California,Santa Barbara, California93106-9610; and tDepartmentof Botany,University of Florida, Gainesville, Florida 32611-8526 The specialized leaf anatomyfor species of Dendrobiumwithin section Aporum is similarto thatof species in section Rhizobium.In both sectionsleaves are characterizedby a unifacialor nearlyunifacial surface where the exposed surface is abaxial. However, leaves in section Rhizobiumalso featurea lacuna submergedin the mesophylland surroundedby an adaxial epidermis.In contrast,leaves in sectionAporum merely present an internalsuture that divides the leaf into bilateralhalves.