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(American Journal of Botany. 2001;88:COVER-cover.)
© 2001 Botanical Society of America, Inc. Cover Illustration: Lemon-scented sun orchid, Thelymitra antennifera. Members of Thelymitrinae rely on deceit to attract pollinators. This species blooms at the same time as a similar lilioid flower that offers a reward. The generalized floral morphology seen in Thelymitra probably represents the plesiomorphic state for Diurideae, but members of the subtribe often have highly modified columns adorned with brush-like appendages to assist in pollen presentation, a simple form of which can be seen in this species. See Kores et al.: A phylogenetic analysis of Diurideae (Orchidaceae) based on plastid DNA sequence data, pp. 1903–1914 in this issue. Photo credit: Dr. Paul Kores.

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