Zobrazeno 1 - 10
of 169
pro vyhledávání: '"David S. Rycroft"'
Autor:
Margaret M. Heslewood, Jochen Heinrichs, Alfons Schäfer-Verwimp, Matt A. M. Renner, Kathrin Feldberg, Simon D. F. Patzak, David S. Rycroft
Publikováno v:
New Zealand Journal of Botany. 55:276-292
We present molecular data demonstrating that the New Zealand endemic Plagiochila caducifolia represents an isolated population of Plagiochila (sect. Arrectae) spinulosa, a species previously thought confined to the eastern Holarctic but which also oc
Autor:
Simon D. F. Patzak, Elisabeth V. I. Barbulescu, Alfons Schäfer-Verwimp, Matt A. M. Renner, Jochen Heinrichs, Kathrin Feldberg, David S. Rycroft
Publikováno v:
Botanical Journal of the Linnean Society. 183:250-259
Allopolyploidy is an important mode of speciation in angiosperms, ferns and mosses, but has been considered of little importance in liverworts. The few known examples include taxa of the simple thalloid genus Pellia, the complex thalloid genera Corsi
Autor:
Kathrin Feldberg, Jochen Heinrichs, David S. Rycroft, Rosemary Wilson, David Glenny, Jörn Hentschel
Publikováno v:
Journal of Biogeography. 34:688-698
Aim The cosmopolitan genus Herbertus is notorious for having a difficult taxonomy and for the fact that there is limited knowledge of species ranges and relationships. Topologies generated from variable molecular markers are used to discuss biogeogra
Publikováno v:
Zeitschrift für Naturforschung B. 59:825-828
The chemical composition of a diethyl ether extract of the Scottish liverwort Pedinophyllum interruptum has been examined. Two new prenylated benzoic acid derivatives, methyl 2,6- dihydroxy-4-methoxy-3-(3’-methyl-2’-butenyl)benzoate and methyl 2,
Publikováno v:
Journal of Bryology. 26:37-45
SUMMARY Plagiochila maderensis Gottsche ex Steph. is reinstated as a Madeiran endemic. This taxon was synonymized with P. spinulosa (Dicks.) Dumort. over 35 years ago and has been accepted under that name in recent years. Morphologically, P. maderens
Publikováno v:
The Bryologist. 105:189-203
According to phylogenetic analyses of nrDNA ITS1 and ITS2 sequences (including the 5.8S unit) the Neotropical Plagiochila moritziana, P. rutilans var. rutilans, P. rutilans var. standleyi, P. trichostoma (= P. permista, syn. nov.), and P. subtriniten
Publikováno v:
Journal of Bryology. 24:119-126
The Neotropical liverwort Plagiochila papillifolia Steph. is conspecific with P. caespiticia Spruce ex Herzog (nom. inval.), P . deciduifolia Steph., P . solmsii Steph. and P . verruculosa R.M.Schust.; it is reported from the Azores, new to Europe. M
Publikováno v:
Tetrahedron. 58:4335-4341
Four oxygenated amorphane derivatives [(−)-(1R,2S,6R,10S)-2α-acetoxyamorpha-4,7(11)-dien-8-one, (−)-(1R,2S,6R,10S)-2α-acetoxy-11-methoxyamorpha-4,7-diene, (−)-(1R,2R,3S,6R,10S)-2α,3α-diacetoxyamorpha-4,7(11)-dien-8-one and (−)-(1R,2R,3R,6
Publikováno v:
Plant Systematics and Evolution. 230:221-230
Plagiochila dubia Lindenb. & Gottsche is reduced to a synonym of the Neotropical P. patula (Sw.) Lindenb. Specimens from the Canary Islands and Madeira proved to belong to the eastern North American P. virginica A.Evans, new to Europe. Phylogenetic a
Autor:
Cecilia Labbé, David S. Rycroft, Francesca Faini, Louis J. Farrugia, Joseph D. Connolly, Joseph Coll
Publikováno v:
Collection of Czechoslovak Chemical Communications. 67:115-123
A bioassay-guided chemical study of a methanolic extract of fresh leaves of Luma chequen led to the isolation of lumaflavanones A (1), B (2) and C (3) whose structures are proposed on the basis of NMR spectroscopic data. The structure of lumaflavanon