Showing papers in "Botanical Journal of the Linnean Society in 1994"

TL;DR: Pollen presenters are specific floral structures, other than anthers, from which pollen is distributed for cross fertilization between flowers, and in some groups there is enhanced ability for female choice because effective pollen delivery enables a choice from among many pollen grains, while in others pollen presenters enhance male reproductive success.

TL;DR: The anatomy and micromorphology of eleven species of Eugenia found in the 'restinga' of Marica, Rio de Janeiro, Brazil, were studied and compared and an analytical key based on these characteristics is presented.

TL;DR: In Caliciales both passive and active spore dispersal occurs, and species with small spores have wider distribution than species with large spores.

TL;DR: A diverse assemblage of coalified sporangia from Lochkovian/Gedinnian, fluvial rocks imicrornatus-newportensis Spore Biozone) contains fusiform forms assignable to Salopella Edwards & Richardson and Tortilicaulis Edwards, and trilete, equatorially thickened and highly distinctive.

TL;DR: The typification of the 109 names of lichens described by Linnaeus is discussed; 50 lectotypes, 24 epitypes and eight neotypes are newly designated and six Linnaean names which have not been in use for a long time are treated as species non satis notae.

TL;DR: A clear link was observed among nectar production pattern, standing crop of nectar, and visitors' behaviour among an Argentinian population of Combretum fruticosum which is self-incompatible and xenogamous.

TL;DR: Although there is high homoplasy amongst both morphological and anatomical characters, leaf anatomy provides some significant data for Iridaceae systematics, especially at the tribal level.

TL;DR: Cuticles of North Queensland rainforest Proteaceac were examined using light and scanning electron microscopy to explore hypotheses relating to the history of the Proteaceae and to possess cuticular morphologies very similar or identical to extant rainforest taxa in the region.

TL;DR: It is demonstrated that androdioecy must have an adaptive advantage in an island system, where inbreeding depression is expected to be greater, and male individuals are much less common than hermaphrodites in all populations studied, thus supporting the prediction made by the models for the maintenance of androdIOecy.

TL;DR: Trichome data support the inclusion of Anopterus and Polyosma in their own tribes, although their wider affinities remain unclear.

TL;DR: Findings support the hypothesis that germination occurs in autumn or spring depending on the climatic zone in which the species grows and birds and mammals act as dispersal agents and mediators of germination.

TL;DR: It was detected that hermaphroditic gametophytes are considerably larger than males or asexuals, and it follows thatgametophyte size is decisive in sex determination.

TL;DR: Corolla ontogeny alone provides no evidence for distinguishing the relative plesiomorphy and apomorphy of different aestivation patterns, and these data undermine previous higher level classifications of Acanthaceae.

TL;DR: The incidence of nectar robbing by Xylocopa violacea differed between the four plant populations studied, and it had significant effects on fruit set when the population was simultaneously considered and Supplementary pollination did not improve fruit set significantly.

TL;DR: Phenology and anatomy of the reproductive phase of Abies pinsapo were studied, and the dormant microsporangia contained pollen mother cells in the premeiotic stage.

TL;DR: A multidisciplinary investigation of the eight annual taxa of Bromus sect.

TL;DR: The results indicate two clusters that can be easily related to two different alliances: Lobarion pulmonariae (Nephrometum resupinati) and Pterogonio gracile-Antitrichion californicae ( Antitrichietum califORNicae).

TL;DR: Leaf anatomy of 25 species in 15 genera of Caladeniinae (Diurideae, Orchidaceae), excluding Caladenia, was investigated to determine diagnostic characters to be used in forthcoming, broad-based cladistic analyses of the subtribe and to assess interspecific and intergeneric relationships.

TL;DR: Vegetative and floral features provide compelling evidence to suggest that Aphanopetalum has its nearest relatives among the Saxifragaceae sensu lato rather than Cunoniaceae.

TL;DR: The P. calarractae complex shows disjunction along the Alpine Fault, a plate boundary of the transform type, which is attributed to massive lateral displacement on the Fault during Tertiary time pulling apart plant populations.

TL;DR: Seeds of 12 species of Veronica from south-west Spain were examined with the scanning electron microscope and stereomicroscope and seven morphological types are recognized, based on seed shape, colour, cell shape and surface ornamentation.

TL;DR: Quantitative and qualitative data are presented for seven collections representing two varieties (unlike in habit) of Gnetum gnemon, and the classical view that G netum vessels are unlike those of angiosperms is supported.

TL;DR: A comparative palynological study of 25 taxa of the genus Orobanche L. belonging to section Trionychon Wallr.

TL;DR: The genus Schizostephanus is resurrected and four new combinations are proposed, followed by a character analysis and phylogeny analysis.

TL;DR: The Singapore flora, in comparison with other tropical floras, is highly diverse, but appears depauperate in epiphytes and climbers.

TL;DR: Chloroplasts were present in most of the ligules (where this feature was determined) supporting the view that this is a photosynthetic leaf organ, and a new hypothesis is proposed.

TL;DR: It was found that their leaf flavonoids are flavonol glycosides derived from either kaempferol, quercetin and isorhamnetin, which suggests a close chemotaxonomic affinity for Diplotaxis.

TL;DR: Morphoanatomical analysis in two popoulations of Satureja horvatii from habitats of different altitudes in the Orjen-Lovcen mountain massif (Montenegro, Yugoslavia) disclosed important adaptive differences and ecological plasticity of this local endemic species.

TL;DR: An allometric analysis suggests that a retardation in the developmental rate of woody tissues (allometric neoteny) is the main mechanism in the development of succulence in cacti.

TL;DR: It is unlikely that all-encompassing solutions will be found to what initially seem to be widespread traits in the Proteaceae, especially in regard to pollination biology, as the genera in the family occupy widely different environments and have very diverse ecological ranges.