Search Results - "Stuessy, T. F."

Speciation and Biogeography of Erigeron (Asteraceae) in the Juan Fernández Archipelago, Chile, Based on AFLPs and SSRs by López-Sepúlveda, P., Takayama, K., Greimler, J., Crawford, D. J., Peñailillo, P., Baeza, M., Ruiz, E., Kohl, G., Tremetsberger, K., Gatica, A., Letelier, L., Novoa, P., Novak, J., Stuessy, T. F.

“…Oceanic islands provide many opportunities for examining modes of speciation in endemic plants, especially using modern molecular methods. Most speciation has…”
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Documentation of reticulate evolution in peonies (Paeonia) using internal transcribed spacer sequences of nuclear ribosomal DNA: implications for biogeography and concerted evolution by Sang, T. (Ohio State University, Columbus, OH.), Crawford, D.J, Stuessy, T.F

“…The internal transcribed spacers (ITS) of nuclear ribosomal DNA of 33 species of genus Paeonia (Paeoniaceae) were sequenced. In section Paeonia, different…”
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A Transitional-Combinational Theory for the Origin of Angiosperms by Stuessy, Tod F.

“…The origin of the angiosperms has long remained problematical. Recent new discoveries of early angiosperm fossils and many new molecular phylogenies have…”
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Evolution of Dystaenia takesimana (Apiaceae), endemic to Ullung Island, Korea by Pfosser, M., Jakubowsky, G., Schlüter, P. M., Fer, T., Kato, H., Stuessy, T. F., Sun, B.-Y.

“…Dystaenia (Apiaceae) consists of two species, one distributed in Japan (D. ibukiensis), and the other endemic to Ullung Island, Korea (D. takesimana). In…”
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Karyotype evolution in South American species of Hypochaeris (Asteraceae, Lactuceae) by Weiss-Schneeweiss, H., Stuessy, T. F., Siljak-Yakovlev, S., Baeza, C. M., Parker, J.

“…The genus Hypochaeris (Asteraceae, Lactuceae) contains ten species in Europe, three in Asia, and approximately 50 in South America. Previous cytotaxonomic…”
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Reproductive isolation in the Aegean Ophrys omegaifera complex (Orchidaceae) by Schlüter, P. M, Ruas, P. M, Kohl, G, Ruas, C. F, Stuessy, T. F, Paulus, H. F

“…The orchid genus Ophrys operates a system of sexual deception by which high specificity of pollination is attained. Reproductive isolation in Ophrys mainly…”
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Genetics of colonization in Hypochaeris tenuifolia (Asteraceae, Lactuceae) on Volcán Lonquimay, Chile by Tremetsberger, K., Stuessy, T. F., Samuel, R. M., Baeza, C. M., Fay, M. F.

“…Understanding the genetics of colonizing populations has been, and continues to remain, an important focus in evolutionary biology. Different theoretical…”
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Taxonomy and cytogeography of Cardamine raphanifolia and C. gallaecica (Brassicaceae) in the Iberian Peninsula by Perný, M., Tribsch, A., Stuessy, T.F., Marhold, K.

“…For a long time it was considered that Cardamine raphanifolia is widely distributed with several infraspecific taxa in the Mediterranean region. Recent studies…”
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Infraspecific genetic variation in Biscutella laevigata (Brassicaceae): new focus on Irene Manton's hypothesis by Tremetsberger, K., König, C., Samuel, R., Pinsker, W., Stuessy, T. F.

“…Genetic variation in 42 populations throughout the range of Biscutella laevigata L. (Brassicaceae), a morphologically variable central European species, has…”
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The Origin of Species of Acer (Sapindaceae) Endemic to Ullung Island, Korea by Pfosser, M. F, Guzy-wróbelska, J, Sun, B-Y, Stuessy, T. F, Sugawara, T, Fujii, N

“…We have conducted a phylogenetic analysis of 57 taxa including 127 accessions of Acer to determine the geographical origin and the presumptive progenitor…”
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Molecular phylogeny and systematics of the highly polymorphic Rumex bucephalophorus complex (Polygonaceae) by Talavera, M., Balao, F., Casimiro-Soriguer, R., Ortiz, M.Á., Terrab, A., Arista, M., Ortiz, P.L., Stuessy, T.F., Talavera, S.

“…[Display omitted] ► R. bucephalophorus forms a monophyletic group. ► Their diversification began around 4.2Mya, at the end of Messinian crisis. ► Subsp…”
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Phylogeography of the invasive weed Hypochaeris radicata (Asteraceae): from Moroccan origin to worldwide introduced populations by ORTIZ, M.Á, TREMETSBERGER, K, TERRAB, A, STUESSY, T.F, GARCÍA-CASTAÑO, J.L, URTUBEY, E, BAEZA, C.M, RUAS, C.F, GIBBS, P.E, TALAVERA, S

“…In an attempt to delineate the area of origin and migratory expansion of the highly successful invasive weedy species Hypochaeris radicata, we analysed…”
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Phylogeny of holoparasitic Orobanche (Orobanchaceae) inferred from nuclear ITS sequences by Schneeweiss, Gerald M, Colwell, Alison, Park, Jeong-Mi, Jang, Chang-Gee, Stuessy, Tod F

“…Orobanche is the largest genus among the holoparasitic members of Orobanchaceae. We present the first molecular phylogenetic analysis (using nuclear ITS…”
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Breeding System and pollination of selected plants endemic to Juan Fernandez Islands by Anderson, Gregory J., Bernardello, Gabriel, Stuessy, Tod F., Crawford, Daniel J.

“…We conducted field studies on the Juan Fernández Islands flora on the breeding system of 25 endemic species from 17 families. We recorded data on flower…”
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Predicting Future Threats to the Native Vegetation of Robinson Crusoe Island, Juan Fernandez Archipelago, Chile by DIRNBÖCK, THOMAS, GREIMLER, JOSEF, LOPEZ S., PATRICIO, STUESSY, TOD F.

“…The Juan Fernandez Archipelago, a Chilean national park and biosphere reserve, is 700 km west of continental Chile. Invasive plant species pose major threats…”
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role of creative monography in the biodiversity crisis by Stuessy, T.F

“…The increasing size and activities of the human population have resulted in pressure on the survival of other life forms. In the face of extinction of many of…”
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Allozyme diversity in endemic flowering plant species of the Juan Fernandez Archipelago, Chile: ecological and historical factors with implications for conservation by Crawford, Daniel J, Ruiz, Eduardo, Stuessy, Tod F, Tepe, Eric, Aqeveque, Pedro, Gonzalez, Fedelina, Jensen, Richard J, Anderson, Gregory J, Bernardello, Gabriel, Baeza, Carlos M, Swenson, Ulf, Silva O, Mario

“…The level and apportionment of allozyme diversity were determined for 29 endemic (and 1 native) species from the Juan$Fern\acute {a}ndez$Islands, Chile. Mean…”
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Taxon Names Are Not Defined by Stuessy, Tod F.

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Taxon Names Are Still Not Defined by Stuessy, Tod F.

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Comments on specific categories in flowering plants by Stuessy, T. F.

“…The paper offers comments arising from the author's experience as a practising taxonomist on two aspects of what is often called "the species problem": the…”
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