K. Sytsma

Publications142
h-index55
Citations9,894
Highly Influential Citations560
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PHYLOGENY, ADAPTIVE RADIATION, AND HISTORICAL BIOGEOGRAPHY OF BROMELIACEAE INFERRED FROM ndhF SEQUENCE DATA
TLDR
Cladistic analysis of ndhf sequences identifies eight major bromeliad clades arranged in ladderlike fashion, and Hechtia, Abromeitiella-Deuterocohnia-Dyckia-Encholirium, and Puya exhibit a remarkable pattern of concerted convergence in six anatomical and physiological leaf traits adapted to drought.
Phylogeny, adaptive radiation, and historical biogeography in Bromeliaceae: insights from an eight-locus plastid phylogeny.
TLDR
A bromeliad phylogeny based on eight plastid regions is used to analyze relationships within the family, test a new, eight-subfamily classification, infer the chronology of b romeliad evolution and invasion of different regions, and provide the basis for future analyses of trait evolution and rates of diversification.
Origin, adaptive radiation and diversification of the Hawaiian lobeliads (Asterales: Campanulaceae)
TLDR
A molecular phylogeny is presented showing that the Hawaiian lobeliads are the product of one immigration event; that they are the largest plant clade on any single oceanic island or archipelago; and that diversification of Cyanea saturates in less than 1.5 Myr.
Salvia (Lamiaceae) is not monophyletic: implications for the systematics, radiation, and ecological specializations of Salvia and tribe Mentheae.
TLDR
In a preliminary investigation of infrageneric relationships within Salvia, the monophyly of the genus and its relationship to other members of the tribe Mentheae were investigated using the chloroplast DNA regions rbcL and trnL-F.
Adaptive radiation, correlated and contingent evolution, and net species diversification in Bromeliaceae.
TLDR
This study is among the first to test a priori hypotheses about the relationships among phylogeny, phenotypic evolution, geographic spread, and net species diversification, and to argue for causality to flow from functional diversity to spatial expansion to species diversity.
Ancient Vicariance or Recent Long‐Distance Dispersal? Inferences about Phylogeny and South American–African Disjunctions in Rapateaceae and Bromeliaceae Based on ndhF Sequence Data
TLDR
Both Rapateaceae and Bromeliaceae appear to have arisen at low elevations in the Guayana Shield, experienced accelerated speciation after invading dissected mountainous terrain, and undergone long‐distance dispersal to west Africa recently.
Staminal evolution in the genus Salvia (Lamiaceae): molecular phylogenetic evidence for multiple origins of the staminal lever.
TLDR
It is suggested that Salvia is clearly polyphyletic, with five other genera intercalated within it, and staminal evolution has proceeded in different ways in each of the three lineages of Salvia but has resulted in remarkably similarStaminal morphologies.
Phylogeny of Capparaceae and Brassicaceae based on chloroplast sequence data.
TLDR
Results of parsimony and likelihood analyses strongly support the monophyly of Brassicaceae plus Capparaceae, excluding Forchhammeria, and suggest the recognition of three primary clades-Cappar Families subfamily (subf.) Capparoideae, Cleomoidesae, and Br Jurassicaceae.
Clades, Clocks, and Continents: Historical and Biogeographical Analysis of Myrtaceae, Vochysiaceae, and Relatives in the Southern Hemisphere
TLDR
The results indicate that the PHMV differentiated during the late Cretaceous, which is likely in explaining the South American–Australasian disjunction and subsequent dispersal events between the two and to Africa and the Mediterranean basin.
Urticalean rosids: circumscription, rosid ancestry, and phylogenetics based on rbcL, trnL-F, and ndhF sequences.
TLDR
To address the composition of the urticalean rosids, the relationships of the component families and analyze evolution of morphological characters, sequence variation is analyzed for a large sampling of these families and various rosid outgroups using rbcL, trnL-F, and ndhF plastid regions.
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