Browsing by Author "Greenway, P. J."
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Item Annotated Check-List of Plants Occurring In Lake Manyara National Park(1969) Greenway, P. J.; Vessey, F. G. D. F.This check-list has been compiled to serve several interests. In the first place systematic botanists need to make name changes from time to time, so ecologists working in the park will find it useful to have a list of currently accepted names. Each determination is supported by a voucher number referring to a specimen retained in the Lake Manyara National Park herbarium, and in most cases duplicated at the Royal Botanic Gardens, Kew and in the East Mrican Herbarium in Nairobi.Item East African Plants of Proved or Potential Value as Drug Producers(1941) Greenway, P. J.This list, arranged by the pharmaceutical names of the different drugs used in pharmacopeias, includes in an alphabetical sequence :( I) those species of drug plants native to or already introduced to East Africa; (2) those other East African plants which by reason of their botanical relationship might be expected on investigation to prove acceptable substitute sources for drugs normally derived from other species. Those species in parenthesis are neither indigenous nor cultivated in East Africa, but have been included because they have African botanical affinities of potential useItem Empire Production of Drugs(1940/1941) Greenway, P. J.Last October, the Medical Research Council of Great Britain issued a list of drugs for the guidance of those concerned with the compilation of formularies and those responsible for drug manufacture and distribution. The Council’s main object was to examine the lists of the drugs which are imported into Great Britain and to recommend substitutes that can be obtained at home or within the British Empire. The Council also found that important drugs are used for purposes for which they are not essential.Item Empire Production of Drugs - Camphor(1941) Greenway, P. J.Camphor, either synthetic or natural, is another of the drugs listed by the Medical Research Council with a rider to the effect that special efforts should be made to increase production within the Empire. In . fact, however, according to the latest figures available (1938) more than four times as much camphor is used for the production of celluloid as for pharmaceutical purposes. Synthetic camphor is on the market, and its price normally governs that of the natural camphor.Item A flora for tropical East Africa(1952/1953) Greenway, P. J.In the early 1930's the preparation by the staff of the Herbarium of the Royal Botanic Gardens, Kew, of a Flora for Tropical East Africa was mooted. The area to be covered by the flora was Uganda, Kenya, Tanganyika and Zanzibar. However, the project had to be abandoned because money was not forthcoming from the United Kingdom or East African governments and nothing further was done until 1947 when a body of distinguished biologists, under the chairmanship of the late Sir Frank Stock dale, was appointed by the Colonial Research Committee to consider the practicability and desirability of forming a Colonial Biological Survey.Item Ministry of Agriculture-A Classification of East African Rangeland with an Appendix on Terminology 1966 HM(Ministry of Agriculture, 1966) Pratt, D. J.; Greenway, P. J.; Gwynne, M. D.; Ministry of AgricultureTwo complementary classification systems recommended by the East African Range Classification Committee are described, to indicate respectively site potential and the present physiognomy and species composition of the vegetation. The first recognizes six broad ecological zones, defined primarily by climate but incorporating vegetation and land-use descriptions, which can be subdivided, as new survey data become available, according to soil and topography, to give more critical ecological land-units. The second comprises a series of physiognomic vegetation types, recognized by the form of the vegetation and the relative contributions of woody plants and grass, with sub-types defined by species composition and grassland type. Profile diagrams are given.Item Origins of Some East African Food Plants Part I(July, 1944) Greenway, P. J.; East African Agricultural Research Institute, AmaniIn a recent issue of a local journal an author was puzzled because Vasco da Gama, the Portuguese explorer, when he anchored in April, 1449, off the north-east Tanganyika coast in view of the Serras de San Rafael, was provided by some Mohammedans with a supply of oranges. The author had thought that the Portuguese introduced the orange to East Africa. As this view is incorrect and some of us may know little of the derivation of many of the food plants grown in East Africa I thought it might be of interest if an account was given of their origins.Item Origins of Some East African Food Plants Part II(October, 1944) Greenway, P. J.; East Africa Agriculture Research Institute, AmaniWATER MELON, Citrullus vuigcrris Schrad. Mtikiti maji, M. mkubwa. Native of the drier parts of tropical and southern Africa, but has been cultivated in Egypt from very remote times and has been traced back to the IVth Dynasty. It was early in Palestine and reached India in prehistoric times, but did not reach China until much later, the tenth century according to one authority, whilst another says between A.D. 1090 and 1155.Item The Papaw or Papaya(1948) Greenway, P. J.; AmaniThe genus Carica, to which the papaw or papaya C. papaya L. belongs, contains some twenty-two species, all of which are found in the warmer parts of America. Originally it was included by botanists in the families Passifloracere and Cucurbitacere, but it was transferred by the German botanist, H. Grafzu Solms, to the family Caricacere; he found the family name on that of the generic name Carica. Besides Carica the family contains the genera Jaracatia found in America, and Cylicomorpha in Africa.Item Wild Rubber in East Africa(1942) Greenway, P. J.There are quite a number of families in the vegetable kingdom whose plants contain latex which frequently is white but in some species is coloured. However good the flow of latex from a plant, it does not imply that it contains the substance caoutchouc, which is the chief constituent of rubber.
