Endress, P.K. 1998. Antirrhinum and Asteridae - evolutionary changes of floral symmetry. Society of Experimental Biology Symposium Series 51: 133-140.
Nandi, O.I., Chase, M.W. & Endress, P.K. 1998. A combined cladistic analysis of angiosperms using rbcL and nonmolecular data sets. Annals of the Missouri Botanical Garden 85: 137-212.
Schönenberger, J. & Endress, P.K. 1998. Structure and development of the flowers in Mendoncia, Pseudocalyx and Thunbergia (Acanthaceae) and their systematic implications. International Journal of Plant Sciences 159: 446-465.
Igersheim, A. & Endress, P.K. 1998. Gynoecium diversity and systematics of the paleoherbs. Botanical Journal of the Linnean Society 127: 289-370.
The Angiosperm Phylogeny Group (29 authors, among them Endress, P.K.). 1998. An ordinal classification for the families of flowering plants. Annals of the Missouri Botanical Garden 85: 531-553.
Bernhard, A. & Endress, P.K. 1999. Androecial development and systematics in Flacourtiaceae s.l. Plant Systematics and Evolution 215: 141-155.
von Balthazar, M. & Endress, P.K. 1999. Floral bract function, flowering process and breeding systems of Sarcandra and Chloranthus (Chloranthaceae). Plant Systematics and Evolution 218: 161-178.
Endress, P.K. 1999. Flower morphology and evolutionary biology, with an appreciation of the contribution by Wilhelm Troll on the centennial of his birth. Systematics and Geography of Plants 68: 25-32.
Endress, P.K. & Igersheim, A. 1999. Gynoecium diversity and systematics of the basal eudicots. Botanical Journal of the Linnean Society 130: 305-393.
Diggle, P.K. & Endress, P.K. 1999. Symmetry in plants: Introduction. International Journal of Plant Sciences 160: S1-S2.
Endress, P.K. 1999. Symmetry in flowers - diversity and evolution. International Journal of Plant Sciences 160: S3-S23.
Buzgo, M. & Endress, P.K. 2000. Floral structure and development of Acoraceae and its systematic relationships with basal angiosperms. International Journal of Plant Sciences 161: 23-41.
Endress, P.K., Baas, P. & Gregory, M. 2000. Systematic morphology and anatomy: 50 years of progress. Taxon 49: 401-434.
von Balthazar, M., Endress, P.K. & Qiu, Y.-L. 2000. Molecular phylogenetics of Buxaceae based on nuclear ITS and plastid ndhF sequences. International Journal of Plant Sciences 161: 785-792.
Endress, P.K., Igersheim, A., Sampson, F.B. & Schatz, G.E. 2000. Floral structure of Takhtajania and its systematic position in Winteraceae. Annals of the Missouri Botanical Garden 87: 347-365.
Zimmer, E. A., Qiu Y.-L., Endress, P.K. & Friis, E.M. 2000. Current perspectives on basal angiosperms: Introduction. International Journal of Plant Sciences 161: S1-S2.
Doyle, J.A. & Endress, P.K. 2000. Morphological phylogenetic analysis of basal angiosperms: comparison and combination with molecular data. International Journal of Plant Sciences 161: S121-S153.
Endress, P.K. & Igersheim, A. 2000. Gynoecium structure and evolution in basal angiosperms. International Journal of Plant Sciences 161: S211-S223.
Endress, P.K. & Igersheim, A. 2000. The reproductive structures of the basal angiosperm Amborella trichopoda (Amborellaceae). International Journal of Plant Sciences 161: S237-S248.
Endress, P.K. 2001. The origins of flower morphology. In Wagner, G. (Ed.). Character concept in evolutionary biology, 493-510. Academic Press, San Diego.
Igersheim, A., Buzgo, M. & Endress, P.K. 2001. Gynoecium diversity and systematics in basal monocots. Botanical Journal of the Linnean Society 136: 1-65.
Endress, P.K. 2001. Evolution of floral symmetry. Current Opinion in Plant Biology 4: 86-91.
Kocyan, A. & Endress, P.K. 2001. Floral structure and development of Apostasia and Neuwiedia (Apostasioideae) and their relationships to other Orchidaceae. International Journal of Plant Sciences 162: 847-867.
Endress, P.K. 2001. The origins of flower morphology. Journal of Experimental Zoology (Molecular and Developmental Evolution) 291: 105-115.
Endress, P.K. 2001. The flowers in basal extant angiosperms and inferences on ancestral flowers. International Journal of Plant Sciences 162: 1111-1140.
Schönenberger, J., Friis, E.M., Matthews, M.L. & Endress, P.K. 2001. Cunoniaceae in the Cretaceous of Europe: evidence from fossil flowers. Annals of Botany 88: 423-437.
Matthews, M.L., Endress, P.K., Schönenberger, J. & Friis, E.M. 2001. A comparison of floral structures of Anisophylleaceae and Cunoniaceae and the problem of their systematic position. Annals of Botany 88: 439-455.
Endress, P.K., Baas, P. & Gregory, M. 2001. Systematic plant morphology and anatomy - 50 years of progress. In Stuessy, T.F., Hörandl, E. & Mayer, V. (Eds) Plant systematics - a half century of progress (1950-2000) and future challenges, 3-36. International Association of Plant Taxonomy, Institute of Botany, University of Vienna, Vienna. (reprinted from Taxon 49: 401-434, 2000)
Kocyan, A. & Endress, P.K. 2001. Floral structure and development and systematic aspects of some 'lower' Asparagales. Plant Systematics and Evolution 229: 187-216.
Stauffer, F.W., Rutishauser, R. & Endress, P.K. 2002. Morphology and development of the female flowers in Geonoma interrupta (Arecaceae). American Journal of Botany 89: 220-229.
Kong, H.-Z., Lu, A.-M. & Endress, P.K. 2002. Floral organogenesis of Chloranthus sessilifolius (Chloranthaceae): with special emphasis on the morphological nature of the androecium of Chloranthus . Plant Systematics and Evolution 232: 181-188.
Fu, D.-Z. & Endress, P.K. 2002. Eupteleaceae, Trochodendraceae, Cercidiphyllaceae. In Wu, Z.-Y. & Raven, P.H. (Eds), Flora of China, Vol. 6: 123,124,126. Science Press, Beijing, and Missouri Botanical Garden Press, St. Louis.
von Balthazar, M. & Endress, P.K. 2002. Development of inflorescences and flowers in Buxaceae and the problem of perianth interpretation. International Journal of Plant Sciences 163: 847-876.
von Balthazar, M. & Endress, P.K. 2002. Reproductive structures and systematics of Buxaceae. Botanical Journal of the Linnean Society 140: 193-228.
Matthews, M.L. & Endress, P.K. 2002. Comparative floral structure and systematics in Oxalidales (Oxalidaceae, Connaraceae, Cephalotaceae, Brunelliaceae, Cunoniaceae, Elaeocarpaceae, Tremandraceae). Botanical Journal of the Linnean Society 140: 321-381.
Endress, P.K. 2002. Morphology and angiosperm systematics in the molecular era. Botanical Review 68: 545-570.
Endress, P.K. 2003. What should a "complete" morphological phylogenetic analysis entail? In Stuessy, T.F., Hörandl, E. & Mayer, V. (Eds), Deep Morphology: Toward a renaissance of morphology in plant systematics. Regnum Vegetabile 141: 131-164. Gantner, Ruggell.
Zhang, Z.-Y., Zhang, H.-D. & Endress, P.K. 2003. Hamamelidaceae. In Wu, Z.-Y. & Raven P.H. (Eds). Flora of China, Vol. 9: 18-42. Science Press, Beijing, and Missouri Botanical Garden Press, St. Louis.
Soltis, D.E., Senters, A., Zanis, M., Kim, S., Thompson, J.D., Soltis, P.S., Ronse Decraene, L.P., Endress, P.K. & Farris, J.S. 2003. Gunnerales are sister to other core eudicots: implications for the evolution of pentamery. American Journal of Botany 90: 461-470.
von Balthazar, M., Schatz, G.E. & Endress, P.K. 2003. Female flowers and inflorescences of Didymelaceae. Plant Systematics and Evolution 237: 199-208.
Endress, P.K. 2003. Early floral development and the nature of the calyptra in Eupomatiaceae. International Journal of Plant Sciences 164: 489-503.
Stauffer, F.W., Asmussen, C., Henderson, A. & Endress, P.K. 2003. A revision of Asterogyne (Arecaceae). Brittonia 55: 326-356.
Merino Sutter, D. & Endress, P.K. 2003. Structure of female flowers and cupules in Balanopaceae, an enigmatic rosid family. Annals of Botany 92: 459-469.
Friis, E.M., Doyle, J.A., Endress, P.K. & Leng, Q. 2003. Archaefructus - angiosperm precursor or specialized early angiosperm? Trends in Plant Science 8: 369-373.
Stauffer, F.W. & Endress, P.K. 2003. Comparative morphology of the female flowers and systematics in Geonomeae (Arecaceae). Plant Systematics and Evolution 242: 171-203.
Blarer, A., Nickrent, D. & Endress, P.K. 2004. Floral structure and systematics in Apodanthaceae (Rafflesiales). Plant Systematics and Evolution 245:119-142.
Kocyan, A., Qiu, Y.-L., Endress, P.K. & Conti, E. 2004. A phylogenetic analysis of Apostasioideae (Orchidaceae) based on ITS, trnL-F and matK . Plant Systematics and Evolution 247: 203-213.
Matthews, M.L. & Endress, P.K. 2004. Comparative floral structure and systematics in Cucurbitales (Corynocarpaceae, Coriariaceae, Datiscaceae, Tetramelaceae, Begoniaceae, Cucurbitaceae, Anisophylleaceae). Botanical Journal of the Linnean Society 145: 129-185.
Soltis, P.S., Soltis, D.E., Chase, M.W., Endress, P.K. & Crane, P.R. 2004. The diversification of flowering plants. In Cracraft, J. & Donoghue, M.J., (Eds), Assembling the tree of life, pp. 154-167. Oxford University Press, New York.
Endress, P.K. 2004. Structure and relationships of basal relictual angiosperms. Australian Systematic Botany 17: 343-366.
Stauffer, F.W., Baker, W.J., Dransfield, J. & Endress, P.K. 2004. Comparative floral structure and systematics in Pelagodoxa and Sommieria (Arecaceae). Botanical Journal of the Linnean Society 146: 27-39.
Endress, P.K. 2004. Biologie und Evolution der Blüten basaler Blütenpflanzen. Leopoldina Jahrbuch 2003, Leopoldina, R. 3, 49: 467-486.
Endress, P.K. & Lorence, D.H. 2004. Heterodichogamy of a novel type in Hernandia (Hernandiaceae) and its structural basis. International Journal of Plant Sciences 165: 753-763.
Matthews, M.L. & Endress, P.K. 2005. Comparative floral structure and systematics in Crossosomatales (Crossosomataceae, Stachyuraceae, Staphyleaceae, Aphloiaceae, Geissolomataceae, Ixerbaceae, Strasburgeriaceae). Botanical Journal of the Linnean Society 147: 1-46.
Kim, S., Koh, J., Ma, H., Hu, Y., Endress, P.K., Hauser, B., Buzgo, M., Soltis, P.S. & Soltis, D.E. 2005. Sequence and expression studies of A-, B-, and E-class MADS-box genes in Eupomatia (Eupomatiaceae): support for the bracteate origin of the calyptra. International Journal of Plant Sciences 166: 185-198.
Bobrov, A.V.F.C., Endress, P.K., Melikian, A.P., Romanov, M.S., Sorokin, A.N. & Bejerano, A.P. 2005. Fruit structure of Amborella trichopoda (Amborellaceae). Botanical Journal of the Linnean Society 148: 265-274.
Endress, P.K. 2005. Carpels of Brasenia (Cabombaceae) are completely ascidiate despite a long stigmatic crest. Annals of Botany 96: 209-215.
Endress, P.K. 2005. The role of morphology in angiosperm evolutionary studies. Nova Acta Leopoldina 92 (342): 221-238.
Endress, P.K. 2005. Links between embryology and evolutionary floral morphology. Current Science 89: 749-754.
Matthews, M.L. & Endress, P.K. 2005. Floral structure and systematics in Celastrales (Celastraceae, Parnassiaceae, Lepidobotryaceae). Botanical Journal of the Linnean Society 149: 129-194.
Endress, P.K. & Matthews, M.L. 2006. Elaborate petals and staminodes in eudicots: structure, function, evolution. Organisms, Diversity and Evolution 6: 257-293.
Endress, P.K. 2006. Angiosperm floral evolution: morphological developmental framework. Advances in Botanical Research 44: 1-61.
Marazzi, B., Endress, P.K. Paganucci de Queiroz, L. & Conti, E. 2006. Phylogenetic relationships within Senna (Leguminosae, Cassiinae) based on three chloroplast DNA regions: patterns in the evolution of floral symmetry and extrafloral nectaries. American Journal of Botany 93: 288-303.
Merino Sutter, D., Forster, P.I. & Endress, P.K. 2006. Female flowers and systematic position of Picrodendraceae (Euphorbiaceae s.l., Malpighiales). Plant Systematics and Evolution 261:187-215.
Endress, P.K. & Matthews, M.L. 2006. First steps towards a floral structural characterization of the major rosid subclades. Plant Systematics and Evolution 260: 223-251.
Matthews, M.L. & Endress, P.K. 2006. Floral structure and systematics in four orders of rosids, including a broad survey of floral mucilage cells. Plant Systematics and Evolution 260: 199-221.
Endress, P.K. & Friis, E.M. 2006. Rosids - reproductive structures, fossil and extant, and their bearing on deep relationships. Introduction. Plant Systematics and Evolution 260: 83-85.
Marazzi, B., Fortunato, R.H., Endress, P.K. & Spichiger, R. 2006. Senna (Cassiinae, Leguminosae) in Paraguay: synopsis, occurrence, ecological role and ethnobotany. Candollea 61:315-329.
Romanov, M.S., Endress, P.K., Bobrov, A.V.F.C., Melikian, A.P. & Bejerano, A.P. 2007. Fruit structure of Monimiaceae s.str. (Laurales). Botanical Journal of the Linnean Society 153: 265-285.
Staedler, Y.M., Weston, P.H. & Endress, P.K. 2007. Floral phyllotaxis and floral architecture in Calycanthaceae (Laurales). International Journal of Plant Sciences 168: 285-306.
Endress, P.K. & Doyle, J.A. 2007. Floral phyllotaxis in basal angiosperms - development and evolution. Current Opinion in Plant Biology 10: 52-57.
Chen, L., Ren, Y., Endress, P.K., Tian, X.H. & Zhang, X.H. 2007. Floral development of Tetracentron sinense (Trochodendraceae) and its systematic significance. Plant Systematics and Evolution 264: 183-193.
Marazzi, B., Conti, E. & Endress, P.K. 2007. Diversity in anthers and stigmas in the buzz-pollinated genus Senna (Leguminosae, Cassiinae). International Journal of Plant Sciences 168: 371-391.
Saarela, J.M., Rai, H.S., Doyle, J.A., Endress, P.K., Mathews, S., Marchant, A.D., Briggs, B.G. & Graham, S.W. 2007. Hydatellaceae identified as a new branch near the base of the angiosperm phylogenetic tree. Nature 446: 312-315.
Sokoloff, D.D., Degtjareva, G.V., Endress, P.K., Remizowa, M.V., Samigullin, T.H. & Valiejo-Roman, C.M. 2007. Inflorescence and early flower development in Loteae (Leguminosae) in a phylogenetic and taxonomic context. International Journal of Plant Sciences 168: 801-833.
Ren, Y., Li, H.-F., Zhao, L. & Endress, P.K. 2007. Floral morphogenesis in Euptelea (Eupteleaceae, Ranunculales). Annals of Botany 100: 185-193.
Rix, M. & Endress, P.K. 2007. 591. Eupomatia laurina. Eupomatiaceae. Curtis's Botanical Magazine 24: 162-167.
Bachelier, J.B. & Endress, P.K. 2007. Development of inflorescences, cupules, and flowers in Amphipterygium, and comparison with Pistacia (Anacardiaceae). International Journal of Plant Sciences 168: 1237-1253.
Marazzi, B. & Endress, P.K. 2008. Patterns and development of floral asymmetry in Senna (Leguminosae, Cassiinae). American Journal of Botany 95: 22-40.
Davis, C.C., Endress, P.K. & Baum, D.A. 2008. The evolution of floral gigantism. Current Opinion in Plant Biology 11: 49-57.
Matthews, M.L. & Endress, P.K. 2008. Comparative floral structure and systematics in Chrysobalanaceae s. l. (Chrysobalanaceae, Dichapetalaceae, Euphroniaceae, and Trigoniaceae; Malpighiales). Botanical Journal of the Linnean Society 157: 249-309.
Endress, P.K. 2008. The whole and the parts: Relationships between floral architecture and floral organ shape, and their repercussions on the interpretation of fragmentary floral fossils. Annals of the Missouri Botanical Garden 95: 101-120.
Endress, P.K. 2008. Perianth biology in the basal grade of extant angiosperms. International Journal of Plant Sciences 169: 844-862.
Bachelier, J.B. & Endress, P.K. 2008. Floral structure of Kirkia (Kirkiaceae) and its position in Sapindales. Annals of Botany 102: 539-550.
Doyle, J.A., Endress, P.K. & Upchurch, G.R., Jr. 2008. Early Cretaceous monocots: A phylogenetic evaluation. Acta Musei Nationalis Pragae, Ser. B, Historia Naturalis, 64: 59-87.
Endress, P.K. & Doyle J.A. 2009. Reconstructing the ancestral flower and its initial specializations. American Journal of Botany 96: 22-66.
Staedler, Y.M., Weston, P.H. & Endress, P.K. 2009. Comparative gynoecium structure and development in Calycanthaceae (Laurales). International Journal of Plant Sciences 170: 21-41.
Bachelier, J.B. & Endress, P.K. 2009. Comparative floral morphology and anatomy of Anacardiaceae and Burseraceae (Sapindales), with a special focus on gynoecium structure and evolution. Botanical Journal of the Linnean Society 159: 499-571.
Staedler, Y.M. & Endress, P.K. 2009. Diversity and lability of floral phyllotaxis in the pluricarpellate families of core Laurales (Gomortegaceae, Atherospermataceae, Siparunaceae, Monimiaceaea). International Journal of Plant Sciences 170: 522-550.
Ren, Y. Chang, H.-L., Tian, X.-H., Song, P. & Endress, P.K. 2009. Floral development in Adonideae (Ranunculaceae). Flora 204: 506-517.
Kissling, J., Endress, P.K. & Bernasconi, G. 2009. Ancestral and monophyletic presence of diplostigmaty in Sebaea (Gentianaceae) and its potential role as a morphological mixed mating strategy. New Phytologist 184: 303-310.
Stauffer, F.W., Barfod, A. & Endress, P.K. 2009. Floral structure in Licuala peltata (Arecaceae: Coryphoideae), with special reference to the architecture of the unusual labyrinthine nectary. Botanical Journal of the Linnean Society 161: 66-77.
Endress, P.K. 2010. The evolution of floral biology in basal angiosperms. Philosophical Transactions of the Royal Society B 365: 411-421.
Doyle, J.A. & Endress, P.K. 2010. Integrating Early Cretaceous fossils into the phylogeny of living angiosperms: Magnoliidae and eudicots. Journal of Systematics and Evolution 48: 1-35.
Ren, Y., Chang, H.-L. & Endress, P.K. 2010. Floral development in Anemoneae (Ranunculaceae). Botanical Journal of the Linnean Society 162: 77-100.
Averyanov, L.V., Endress, P.K., Quang, B.H., & Nguyen, S.K. 2017. Disanthus ovatifolius (Hamameliadaceae) new species from nothwestern Vietnam. Phytotaxa 308: 104-110.