Previous articleNext article FreeFlowers and Insects. XXIIICharles RobertsonCharles Robertson Search for more articles by this author PDFPDF PLUS Add to favoritesDownload CitationTrack CitationsPermissionsReprints Share onFacebookTwitterLinkedInRedditEmail SectionsMoreDetailsFiguresReferencesCited by Volume 78, Number 1Sep., 1924 Article DOIhttps://doi.org/10.1086/333356 Views: 39Total views on this site Citations: 6Citations are reported from Crossref Journal History This article was published in the Botanical Gazette (1876-1991), which is continued by International Journal of Plant Sciences (1992-present). PDF download Crossref reports the following articles citing this article:Suiane Santos Oleques, Gerhard Ernst Overbeck, Rubem Samuel de Avia , Flora 229 ( 2017): 141.https://doi.org/10.1016/j.flora.2017.02.024Martha A. Case, Todd J. Bierbaum Pollinator-mediated mating restriction between sympatric varieties of yellow lady’s slipper orchids (Cypripedium parviflorum Salisb.), Plant Systematics and Evolution 299, no.99 (May 2013): 1721–1735.https://doi.org/10.1007/s00606-013-0828-4MARTHA A. CASE, ZACHARY R. BRADFORD Enhancing the trap of lady's slippers: a new technique for discovering pollinators yields new data from Cypripedium parviflorum (Orchidaceae), Botanical Journal of the Linnean Society 160, no.11 (May 2009): 1–10.https://doi.org/10.1111/j.1095-8339.2009.00962.xCharles B. Fenster, W. Scott Armbruster, Paul Wilson, Michele R. Dudash, James D. Thomson Pollination Syndromes and Floral Specialization, Annual Review of Ecology, Evolution, and Systematics 35, no.11 (Dec 2004): 375–403.https://doi.org/10.1146/annurev.ecolsys.34.011802.132347David G. Lloyd, C. J. Webb The avoidance of interference between the presentation of pollen and stigmas in angiosperms I. Dichogamy, New Zealand Journal of Botany 24, no.11 (Jan 1986): 135–162.https://doi.org/10.1080/0028825X.1986.10409725Richard H. Eyde, Judy T. Morgan FLORAL STRUCTURE AND EVOLUTION IN LOPEZIEAE (ONAGRACEAE), American Journal of Botany 60, no.88 (Sep 1973): 771–787.https://doi.org/10.1002/j.1537-2197.1973.tb07589.x