Showing papers in "Botanical Journal of the Linnean Society in 1987"

TL;DR: The chemical constituents and economic plants of the Euphorbiaceae, including triterpenoids and related compounds, phenolic compounds, alkaloids, cyanogenic glucosides and glucosinolates, and industrial and medicinal uses are provided.

TL;DR: Following a review of the site of rubber biosynthesis in Hevea brasiliensis and Parthenium argentalum, evidence is given for the initiation of polyisoprene molecules from Merlinoid precursors including geranylgeranyl pyrophosphate.

TL;DR: The Euphorbiales are best construed as containing a single major family, the Euphorbiaceae, as suggested by Hutchinson; the small family Pandaceae is also included in the EuphOrbiales but may not be separable from the EuphORbiaceae.

TL;DR: It seems probable that the articulated and non-articulated types of Euphorbiaceae are not as divergent as commonly supposed, since both may undergo intrusive growth, although more ontogenetic studies are needed to clarify the relationship between them.

TL;DR: As!rocaryurn mexicanurn is an example of a highly diverse pollination system in which many animals can coexist, and represents an important resource during the dry season, and provides food and space for refuge and mating.

TL;DR: Five species of fossil dicotyledonous wood are described from an Upper Cretaceous of Southern Illinoi that lack specialized wood anatomical characters, and a compilation of vessel element lengths indicates that short vessel elements were less frequent in the Cret Jurassic than in extant dicotsyllabenous trees.

TL;DR: A study of phylloclade development in comparison with leaf and stem development was undertaken in four closely related species of the Asparagaceae: Ruscus aculeatus, Danae racemosa, Semele androgyna and Asparagus densiflorus.

TL;DR: A survey of pollen morphology in Euphorbiaceae with special reference to Phyllanthus, and Webster's contribution to the classification of the subgenus PhyllAnthus is illustrated with pollen morphological results.

TL;DR: Compounds which induce platelet aggregation stimulate the secretion of a biologically active substance which the authors have termed ‘Factor W’, an unstable substance distinct in its aggregating properties from phorbol esters, ADP, 5-hydroxytryptamine, thrombin, platelet aggregating factor and the products of arachidonate oxidative metabolism.

TL;DR: A revised classification of Saxifraga is presented in which 15 sections, 19 subsections and 34 series are recognized, including the following new taxa, combinations and names: series Hirculoideae (Engler & Irmscher) Gornall, stat.

TL;DR: Laticifer characters used in conjunction with relevant morphological features will provide a broadened insight into phylogenetic relationships with the Euphorbiaceae, indicating a genetic basis for triterpenoid synthesis.

TL;DR: The colour and shape of flowers of Oenothera drummondii change owing to senescence, pollination and/or nectar withdrawal is interpreted as a signal emitted by the plant to ‘inform' the potential pollinator of its new status as a rewardless flower.

TL;DR: The raphe, extensive chalaza and well-developed cup-like hypostase sensu lato play an important role in the development of the seed-coat and the inner, tanniniferous epidermis of the inner integument persists in parts of the mature seed- coat.

TL;DR: The activation of protein kinase C by daphnane, ingenane and tigliane diterpenoid eaters provides the explanation for the tumour promotion effects of some phorbol esters.

TL;DR: An hypothesis to explain the relationships between various diterpenoids found in members of the Euphorbiaceae is proposed, and the likely nature of the tetraprenyl pyrophosphate precursor is considered, as is the manner in which the precursor may cyclize.

TL;DR: The paper is mainly devoted to the bi-ovulate subfamily Phyllanthoideae, which has a great number of primitive characters and can be recognized on the basis of their wood anatomy.

TL;DR: Evidence is presented which suggests that hypotheses presented by Kirkpatrick & Brown relating to endemic species in Tasmania are either invalid or of limited importance for woody rainforest species.

TL;DR: The Euphorbiaceae family contains a number of species used by man in a wide variety of ways, and species with more occasional use have constituents with interesting properties of potential future economic application.

TL;DR: It seems possible to modify genetically the terpene biosynthetic pathways in plants to improve both the quality and quantity of the oils produced from them, with palm oil as the most productive source.

TL;DR: Quantitative chemical and toxicologic investigations indicate that life-style oesophageal cancer, prevalent on Curasao, is the first case of cocarcinogens of the DTE type shown to be the principal risk factor in a multifactorial human cancer, in conjunction with initiators of the solitary carcinogenic PAH type.

TL;DR: An arid temperate, shrub-like origin for the African Proteaceae is suggested, which is in contrast to some published viewS and modifications to accepted concepts of fruit homology and evolutionary trends such as pollination and dispersal are presented for the family.

TL;DR: The overall proportion of fusiform initials in the cambial cylinder initially increases with age, from young shoots towards the base, and later becomes more or less constant in the trunk region, where it remains noticeably high during the active growth period and relatively low for the rest of the year.

TL;DR: The specialized female and male inflorescences of Blepharocarya are analysed revealing that each is derived from a thyreoid inflorescence, which appears to be a characteristic of the Anacardiaceae.

TL;DR: Five families of long-standing Euphorbiaceae have recently been recognized at Kew, and are discussed here, as are two others which have not been so recognized.

TL;DR: It is concluded that the petaloid scales are equivalent to petals rather than staminodes, that the nectaries do not represent a disk and that the gynoecium is monocarpellary.

TL;DR: Eighty-three flowering plants are discussed as successful, failed or potential invaders of the Teide National Park, Tenerife, a caldera at 2000 m altitude and above with a largely endemic native flora.

TL;DR: It is suggested that S. celebica may represent an intermediate stage in the evolution of dioecy from distyly, with the short–styled flowers making their major genetic contribution through pollen and long–styling flowers through ovules.

TL;DR: A comparison among 20 genera, representatives of Sophoreae, Thermopsideae and Genisteae based on the serological cross reactivity of the seed proteins, indicates that sophoreae are highly heterogeneous and there is little similarity among genera of the New World, generas of tropical austral Africa, and generA of temperate Eurasia.