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Showing papers in "Botanical Journal of the Linnean Society in 2008"


Journal ArticleDOI
TL;DR: It is suggested that the populations of the Hengduan Mountains region of the south-eastern Q-T Plateau showed high diversity and uniqueness of haplotypes, and it was suggested that this region was the potential refugium of M. striata during the Quaternary glaciation, and that interglacial and postglacial range expansion occurred from thisRefugium.

86 citations


Journal ArticleDOI
TL;DR: In the studied populations, pollination efficiency, pollen removal, and fruit set increased with increasing population size until a threshold value of 30‐40 flowering plants was reached, above whichpollination efficiency and reproductive output decreased again, suggesting that geitonogamous pollination did not affect the outcome of female function.

71 citations


Journal ArticleDOI
TL;DR: Each of the two case studies was consistent with, but not proof of, saltational macroevolution operating via functional changes in one or more key developmental genes, although both were subject to heterochronic shifts.

59 citations


Journal ArticleDOI
TL;DR: The relationships of C. mirabilis within the family Aneuraceae are reconstructed using DNA sequence data from the chloroplast, mitochondrial (trnS), and nuclear (26S and ITS) genomes, and the myco-heterotrophic liverwort should be considered as a distinct species of Aneura, rather than an autonomous genus.

48 citations


Journal ArticleDOI
TL;DR: The moss genus Tortula is revised for South America and a new species, Tortula arequipensis, is described from Peru, and twenty-six names are newly synonymized.

48 citations


Journal ArticleDOI
TL;DR: Re-examination of herbarium specimens and population genetic data indicate past hybridization among anthropomorphic Orchis species occurring naturally in the Chilterns, and tentatively recommends retention of the hybrid plants at Goring, despite their likely anthropogenic origin from Continental material and the partial viability of their pollen and seeds.

47 citations


Journal ArticleDOI
TL;DR: The detection of 15 hybrids indicates that, if Rhododendron underwent rapid radiation in this region, it did so in spite of permeable species barriers, and was asymmetrical, with R. delavayi as the major maternal parent in the hybrid zone.

46 citations


Journal ArticleDOI
TL;DR: The reproductive strategy of P. vayredae prevents inbreeding depression by a self-incompatibility system, which in years of scarce pollinators is overcome by the plant habit.

46 citations


Journal ArticleDOI
TL;DR: Molecular variation within A. gigantea, within each of the two cryptic Old World plus E North American (except tropical African) haplotype groups, and among tropical African populations are of similar magnitude, suggesting that analogous mechanisms and similar time spans explain the found variation.

45 citations


Journal ArticleDOI
TL;DR: The genus Philodendron (Araceae) is a large neotropical group whose classification remains unclear, and among the morphological characters used by previous taxonomists to build their classifications, most characters were found to be homoplasious.

44 citations


Journal ArticleDOI
TL;DR: The demographic dynamics of three populations of Dioon edule Lindl (Zamiaceae) were studied in a fragmented landscape using projection matrix modelling and it was detected that disturbance influences the population dynamics of D. edule as a function of adult plant persistence.

Journal ArticleDOI
TL;DR: There was complete additivity in genome structure with increasing ploidy, as reported in some angiosperm polyploids, and it is speculated that sporadic telomeric signals using the (TTTAGGG)n probe are probably derived from either errors in telomerase activity or relic ancestral-type telomersic sequences.

Journal ArticleDOI
TL;DR: It is described for the first time in Asteraceae the presence of secretory idioblasts in C. sphaerocephala, which is found on thickened and nonthickened subterranean organs of seven Asteraceae species from three tribes.

Journal ArticleDOI
TL;DR: These individual species-level investigations for Pilularia and Salvinia, together with previously published studies on Marsilea and Azolla, provide phylogenies within all genera of heterosporous ferns.

Journal ArticleDOI
TL;DR: Rewardless kettle-trap flowers Cypripedium yunnanense and C. flavum were watched for pollinators during 73 and 101 man-hours, respectively, in north-west Yunnan, and analyses of the pollen carried indicate that the two andrenids are probably oligolectic; the andrenid do not share the same flower species; and the halictid is polylectic.

Journal ArticleDOI
TL;DR: It is proposed here to treat this complex as a single species subdivided in four subspecies, with new combinations O. echioides subsp.

Journal ArticleDOI
TL;DR: The pollen morphology and exine structure of 10 Mentha L. species investigated indicate that the pollen characters of the genus Mentha are valuable for taxonomic applications and may be useful for classification.

Journal ArticleDOI
TL;DR: Variations in floral traits between the different life forms and climatic conditions are discussed with respect to pollination efficiency and properties of the growing season.

Journal ArticleDOI
TL;DR: Tahina is included within tribe Chuniophoeniceae of subfamily Coryphoideae, based on the strictly tubular imbricate rachilla bracts, the flowers grouped in cincinni with tubular bracteoles, and the stalk-like base to the corolla.

Journal ArticleDOI
TL;DR: The results support recent findings that rare plant species maintain high levels of genetic diversity and the heterozygote excess found at all loci is discussed in detail from a neutral evolutionary perspective.

Journal ArticleDOI
TL;DR: Chrysobalanaceae s.l., one of the few suprafamilial subclades of Malpighiales that is supported by molecular phylogenetic analyses, and containing ChrysoBalanaceae, Dichapetalaceae, Euphroniaceae, and Trigoniaceae, was comparatively studied with regard to floral structure.

Journal ArticleDOI
TL;DR: The six new species dramatically broaden the morphological limits of the baracoffea alliance, and of Coffea itself, particularly as a result of the discovery of species with distinctly winged fruits, extra-axillary domatia and seeds with shallowly ruminate endosperm.

Journal ArticleDOI
TL;DR: A comprehensive taxonomic revision of Goniothalamus species (Annonaceae) occurring in Thailand is presented for the first time, and most species are restricted to Peninsular Thailand and represent a Malesian floristic component.

Journal ArticleDOI
TL;DR: In the analysis that included all characters, a single most parsimonious tree was found that supported subgenus Puya by two synapomorphic character states, including the diagnostic character of a sterile inflorescence branch apex and a blooming pattern in which flowers open gradually from base to apex.

Journal ArticleDOI
TL;DR: Comparison of the IUCN threat status for the 19 species endemic to this distinctive, restricted vegetation type reveals a striking lack of consistency and underscores the need for a reassessment of the entire New Caledonian flora.

Journal ArticleDOI
TL;DR: An extensive review of ploidy in Prosopis was undertaken, the first of its kind, and it is suggested that P. juliflora is the only tetraploid species, whilst the remainder of the species analysed are diploid with 2n = 2x = 28, including the first report for P. articulata.

Journal ArticleDOI
TL;DR: A cytogenetic study of 62 populations of Santolina pectinata in Spain shows the existence of two ploidy levels, and polyploidy is shown to be spontaneous and recurrent, promoting partial sterility in the pollen.

Journal ArticleDOI
TL;DR: The diagnosis of Haskinsia is enlarged to accommodate plants whose lamina has entire or toothed margins and the palaeophytogeography of the genus, otherwise known from South and North America, is discussed.

Journal ArticleDOI
TL;DR: A newly discovered pattern of biological disjunction between NW and SE New Caledonia occurs in 87 (mapped) taxa, including plants, moths and lizards, and correlates spatially with the West Caledonian fault.

Journal ArticleDOI
TL;DR: Staminate expression in Consolea appears to be controlled by a common, genetically determined heterochronic ovule developmental programme affecting the relative timing of ovule receptivity and flower opening, the first report of heterochrony as a mechanism of male sex determination.