Showing papers in "Botanical Journal of the Linnean Society in 1992"

TL;DR: For the 25 species with N≥ 10, habitat specialization as a function of the level of annual inundation was demonstrated, and for five of these species that occurred on plot 1, further refinement of niche as afunction of gradient was demonstrated.

TL;DR: It is found that non-myrmecophytic Macaranga species also produce food bodies on leaves and stems, where they are collected by a variety of ants, and these observations suggest that food bodies enhance the evolution of ant-plant interactions.

TL;DR: This study includes a taxonomic revision of the genus Cynara and the cultivated artichoke and cardoon are both included in C. cardunculus.

TL;DR: Flowers of C. albidus produce more pollen and nectar than the other two species studied, and attract more insects, especially those with higher nutritional requirements, but C. salvifolius and C. monspeliensis show some features that hinder xenogamy, and they have lower pollen-ovule ratios than C.Albidus.

TL;DR: Since functional hermaphroditism occurs in expanding populations of the Camargue population, it is considered that the androdioecy of P. angustifolia could be a kind of leaky dioecism.

TL;DR: Plant pollination-system specificity and pollen transportation were statistically significant among plant species with different pollinator types, but plant pollination system and pollen Transportation were not different among floral symmetry, floral longevity, reward type, plant sexuality, breeding system and plant life form.

TL;DR: It is concluded that colloids and their precursors may play a far more significant part in spore and pollen wall structure than was previously believed.

TL;DR: The assemblage demonstrates diversity among rhyniophytoids in the early Devonian and the existence of low vegetation ‘alongside’ the much larger zosterophyll dominated type.

TL;DR: The evolution of unisexual flowers in Siparuna can be explained as a result of the differential predation by larvae: unimportant in male flowers, destructive if occurring in female flowers.

TL;DR: Decaying fronds and exposed stems of the mangrove palm Nypa fruticans were collected from beaches and intertidal regions of mangroves in Brunei and examined for the presence of higher marine fungi, identifying forty-three species, four of which are new to science.

TL;DR: The ratio between components of floral female and male functions within the orchid population suggested that the much elongated operative male floral parts result from strong and progressively extreme sex-specific selection for acquiring mates via hawk-moths.

TL;DR: The Wallace effect, which is the development of internal isolation barriers as such, is likely to have taken place in the evolution of Allium section Cepa, with high isolation barriers found between the related species A. cepa and A. roylei of section Rhizirideum.

TL;DR: Common features that unite the genera are the somewhat peltate configuration of the cone scales due to late intercalary expansion, the derivation of the vascular supply to the bract-ovule complex from a single bundle and the usual inversion of the seed during late development, to which can be added developmental features.

TL;DR: Manipulation experiments demonstrate that changes in leaf orientation in Rhododendron most likely serve to protect the leaves from membrane damage due to high irradiance and cold temperatures, and may serve to slow the rate of thaw following freezing, a common phenomenon in the Appalachian mountains of the U.S.

TL;DR: The classification of section Rhizosperma is revised using multivariate statistical analyses of ultrastructural, gross morphological and anatomical characters and three distinct geographically related subspecies of A. pinnata are identified and formally named and described.

TL;DR: Observations of stigmas positioned at and below the surface of the water show surface pollination to be highly efficient, and it is likely that surface-borne pollen is a major source of gene flow in Zostera marina populations.

TL;DR: Long distance xylem pathways in unbranched stems and connections between lateral branches and main stems are described for !

TL;DR: The anatomical data support the treatment of Henderson (1949) of section Acmena but not of sections Cleistocalyx and Fissicalyx, which fit better in section Syzygium.

TL;DR: It is argued that several approaches utilizing pollen morphological data for the classification of the Acanthaceae family can be identified and some of the Lindau pollen types are shown to have an indirect relationship to Lindau's own classification.

TL;DR: Principal component analyses and hybrid analyses, according to Wells, using 31 morphological characteristics were used to study the biosystematic relationships between six Allium species of section Cepa and A. roylei of section Rhizirideum.

TL;DR: Tabebuia has both floral and extrafloral nectaries, situated on the petiole, bract, calyx, around the ovary and on the pericarp, and the major insect visitors are honey bees, houseflies and ants.

TL;DR: Comparison of the new specimens made from the Xujiachong Formation with reported Z. australianum has led to some nomenclatural changes, and Morphological variation of in-situ spores is also described.

TL;DR: The enhanced precision of the assessment of oogonial characteristics has enabled a new approach to Pythium classification to be developed and the inadequacy of the traditional plerotic/aplerotic concept was revealed.

TL;DR: The construction of the leaf of T. latifolia is that of a lightweight cantilever beam of sandwich type mounted vertically that prevents buckling under natural conditions and injury in storms.