ecological aspects of the cretaceous flowering plant
... the Early Cretaceous generally has been explained in terms of possible “key innovations” that distinguish most angiosperms from other plants, such as double fertilization, pollen tube competition, or presence of vessels in vascular tissue. The potential importance of ecological interactions has also ...
... the Early Cretaceous generally has been explained in terms of possible “key innovations” that distinguish most angiosperms from other plants, such as double fertilization, pollen tube competition, or presence of vessels in vascular tissue. The potential importance of ecological interactions has also ...
Meadow Knapweed - long
... BIOLOGICAL CONTROL: Two gall flies, Urophora affinis and Urophora quadrifasciata, a moth, Metzneria paucipunctella, and a beetle, Shenoptera jugoslavica, have been introduced into North America for biological control of knapweeds. HERBICIDES can be effective, but should always be applied with care. ...
... BIOLOGICAL CONTROL: Two gall flies, Urophora affinis and Urophora quadrifasciata, a moth, Metzneria paucipunctella, and a beetle, Shenoptera jugoslavica, have been introduced into North America for biological control of knapweeds. HERBICIDES can be effective, but should always be applied with care. ...
Declared Rare and Poorly Known Flora in the Central Forest Region
... This program provides a brief description of the appearance, distribution, habitat and conservation status of flora declared as rare under the Western Australian Wildlife Conservation Act (Threatened Flora) and poorly known flora (Priority Flora) in CALM's Central Forest Region and makes recommendat ...
... This program provides a brief description of the appearance, distribution, habitat and conservation status of flora declared as rare under the Western Australian Wildlife Conservation Act (Threatened Flora) and poorly known flora (Priority Flora) in CALM's Central Forest Region and makes recommendat ...
table of contents - North American Prairie Conference 2016
... concerns, and your experiences with managing life below the surface. Discussion Leaders: Victoria Borowicz+ - School of Biological Sciences, ISU Diane Byers+ - School of Biological Sciences, ISU 3) Seeding the Future: a discussion of issues surrounding native seed and plant production. In a perfect ...
... concerns, and your experiences with managing life below the surface. Discussion Leaders: Victoria Borowicz+ - School of Biological Sciences, ISU Diane Byers+ - School of Biological Sciences, ISU 3) Seeding the Future: a discussion of issues surrounding native seed and plant production. In a perfect ...
Sunflower Production Sunflower Production - Open PRAIRIE
... be of economic significance. The most important of these are Sclerotinia diseases, downy mildew, rust, Phoma black stem, and premature ripening. Alternaria and Septoria leaf spots, Phomopsis stem canker, Verticillium wilt, and Botrytis and Rhizopus head rots can occur but usually are infrequent or o ...
... be of economic significance. The most important of these are Sclerotinia diseases, downy mildew, rust, Phoma black stem, and premature ripening. Alternaria and Septoria leaf spots, Phomopsis stem canker, Verticillium wilt, and Botrytis and Rhizopus head rots can occur but usually are infrequent or o ...
asian elephants are essential as seed dispersers in a
... functionally unique in their contribution to many ecological processes. One such ecosystem process is seed dispersal, but few studies have measured the relative importance of a megaherbivore species and sympatric seed dispersers. This dissertation explores how the loss of Asian elephants (Elephas ma ...
... functionally unique in their contribution to many ecological processes. One such ecosystem process is seed dispersal, but few studies have measured the relative importance of a megaherbivore species and sympatric seed dispersers. This dissertation explores how the loss of Asian elephants (Elephas ma ...
Plant descriptions and Appendices - PDF 5.5MB
... = New England Tablelands. For further information see Part Two: Vegetation ...
... = New England Tablelands. For further information see Part Two: Vegetation ...
The Story of an Organism: Common Milkweed
... brittle leaves of some grasses and wildflowers, and the crisscross of matted stems from asters, goldenrods and milkweed provide the immediate surroundings for this year’s fresh green emerging vegetation. The shoots of grasses, goldenrods, and other wildflowers are rising out of the soil; common milk ...
... brittle leaves of some grasses and wildflowers, and the crisscross of matted stems from asters, goldenrods and milkweed provide the immediate surroundings for this year’s fresh green emerging vegetation. The shoots of grasses, goldenrods, and other wildflowers are rising out of the soil; common milk ...
Landscape-scale eco-evolutionary dynamics: Selection by seed
... evolutionary change on ecological processes (eco-evolutionary dynamics). Fewer studies have addressed whether eco-evolutionary dynamics structure natural ecosystems. We investigated variation in the frequency of serotiny in lodgepole pine (Pinus contorta), a widespread species in which postfire seedl ...
... evolutionary change on ecological processes (eco-evolutionary dynamics). Fewer studies have addressed whether eco-evolutionary dynamics structure natural ecosystems. We investigated variation in the frequency of serotiny in lodgepole pine (Pinus contorta), a widespread species in which postfire seedl ...
Schedule 10 - Vegetation Species List
... promote the use of indigenous species in informal and formal gardens, and to assist in creating habitat refuges within the urban and rural environment. Restoration works undertaken to consolidate waterways, improve nutrient removal and minimise environmental impacts. Weed transfer potential minimise ...
... promote the use of indigenous species in informal and formal gardens, and to assist in creating habitat refuges within the urban and rural environment. Restoration works undertaken to consolidate waterways, improve nutrient removal and minimise environmental impacts. Weed transfer potential minimise ...
A Field Guide for Collecting Native Seeds in Nevada
... Nevada, direction in species selection when planning to either collect or plant native species. This priority list should not be considered an exclusive or restrictive list, but rather a first attempt to provide guidance to those interested in collecting, producing or selling native seed. The list w ...
... Nevada, direction in species selection when planning to either collect or plant native species. This priority list should not be considered an exclusive or restrictive list, but rather a first attempt to provide guidance to those interested in collecting, producing or selling native seed. The list w ...
Growing American Ginseng in Ohio
... basis rather than having one entire crop come into maturity all at once. Planting over a number of years can also help ensure that you won’t have a complete loss of your crop due to weather, rodents or other environmental factors that can wipe out a young planting in one season. Ultimately you want ...
... basis rather than having one entire crop come into maturity all at once. Planting over a number of years can also help ensure that you won’t have a complete loss of your crop due to weather, rodents or other environmental factors that can wipe out a young planting in one season. Ultimately you want ...
Deciphering angiosperm origins
... cloud our judgement. There are at least three schools of thought. One school accepts leaf and pollen morphology as sufficient evidence for the presence of fossil angiosperms27,28 . The second school places more emphasis on the continuity of the pollen record29,30 . The third school would accept noth ...
... cloud our judgement. There are at least three schools of thought. One school accepts leaf and pollen morphology as sufficient evidence for the presence of fossil angiosperms27,28 . The second school places more emphasis on the continuity of the pollen record29,30 . The third school would accept noth ...
Evolution of Amphibious Vernal Pool Specialist Annuals: Putative
... for the unique nature of this habitat. The vernal pool flora contains only 5-10% introduced species, mostly of South American and African origin, while adjacent grasslands (38% introduced) and marshes have been transformed by introduced Eurasian species (Holland and Jain, 1977). Climate (cool wet wi ...
... for the unique nature of this habitat. The vernal pool flora contains only 5-10% introduced species, mostly of South American and African origin, while adjacent grasslands (38% introduced) and marshes have been transformed by introduced Eurasian species (Holland and Jain, 1977). Climate (cool wet wi ...
Poison Hemlock Conium maculatum
... poison hemlock, the principle toxins are the piperidine alkaloids coniine and coniceine. Coniine is more common in the seed and in mature plants, but coniceine makes up 98 percent of the total alkaloids in the early vegetative stage. Coniceine is eight times as toxic as coniine. These two principle ...
... poison hemlock, the principle toxins are the piperidine alkaloids coniine and coniceine. Coniine is more common in the seed and in mature plants, but coniceine makes up 98 percent of the total alkaloids in the early vegetative stage. Coniceine is eight times as toxic as coniine. These two principle ...
Human impacts on how savanna plants interact through fire, resources,... A Dissertation SUBMITTED TO THE FACULTY OF
... of Bews Herbarium at UKZN, Richard Boon, David Styles, Rob Scott-Shaw, and Debbie Jewitt. I could trace such influences more inclusively, or further back in time, but I must stop somewhere; I thank my parents for getting me into nature and all my other teachers, academic and personal. ...
... of Bews Herbarium at UKZN, Richard Boon, David Styles, Rob Scott-Shaw, and Debbie Jewitt. I could trace such influences more inclusively, or further back in time, but I must stop somewhere; I thank my parents for getting me into nature and all my other teachers, academic and personal. ...
Catalogue and Order Form in Adobe PDF Format
... Place your orders by post or email using the order form. Prices reflect size as well as scarcity and ease of propagation. Most potgrown plants are in 1 litre, 2 litre or 10cm pots. We used to show a price range, but this confused lots of people. We now list only one price, but will sometimes charge ...
... Place your orders by post or email using the order form. Prices reflect size as well as scarcity and ease of propagation. Most potgrown plants are in 1 litre, 2 litre or 10cm pots. We used to show a price range, but this confused lots of people. We now list only one price, but will sometimes charge ...
Breeding Pumpkin (Cucurbita moschata Duch. ex Poir.) for Fruit
... long before the discovery of America (Whitaker and Bemis 1976). Archaeological remains trace the association of pumpkins and squashes with man in America for at least 10,000 years (Whitaker and Cutler 1971). It was presumed that fruits of most wild species of Cucurbita were of a size and colour to a ...
... long before the discovery of America (Whitaker and Bemis 1976). Archaeological remains trace the association of pumpkins and squashes with man in America for at least 10,000 years (Whitaker and Cutler 1971). It was presumed that fruits of most wild species of Cucurbita were of a size and colour to a ...
2. bulbs to flower next spring and summer for despatch in mid
... A fascinating group with bell-like flowers which like good drainage. However, the meleagris forms prefer a damp position or semi-shade. Although not dwarf bulbs we include two forms of F. imperialis which like sunny places in a rich soil and are best planted 6” deep on their sides. ...
... A fascinating group with bell-like flowers which like good drainage. However, the meleagris forms prefer a damp position or semi-shade. Although not dwarf bulbs we include two forms of F. imperialis which like sunny places in a rich soil and are best planted 6” deep on their sides. ...
Asparagus weeds management manual: Section 1
... (rhizomatous roots), which persist year round and can be up to 85% of the plant’s biomass. This allows the weeds to withstand harsh conditions, including drought and fire. Some species form ‘crowns’ at the base of the stems, with a root mass radiating out from the crown. Other species form extensive ...
... (rhizomatous roots), which persist year round and can be up to 85% of the plant’s biomass. This allows the weeds to withstand harsh conditions, including drought and fire. Some species form ‘crowns’ at the base of the stems, with a root mass radiating out from the crown. Other species form extensive ...
Fighting Invasive Weeds - A Northeastern Nevada Landowners
... To maintain their health and productivity, landscapes must be protected from the threat of invasive weeds. Many people are unaware that invasive weeds pose a very real environmental threat. When weeds are mentioned, they think of the dandelions in their lawn or the weeds in their vegetable gardens. ...
... To maintain their health and productivity, landscapes must be protected from the threat of invasive weeds. Many people are unaware that invasive weeds pose a very real environmental threat. When weeds are mentioned, they think of the dandelions in their lawn or the weeds in their vegetable gardens. ...
collections - Broadleigh Bulbs
... A fascinating group with bell-like flowers which like good drainage. However, the meleag-ris forms prefer a damp position or semi-shade. Although not dwarf bulbs we include two forms of F. imperialis which like sunny places in a rich soil and are best planted 6” deep on their sides. ...
... A fascinating group with bell-like flowers which like good drainage. However, the meleag-ris forms prefer a damp position or semi-shade. Although not dwarf bulbs we include two forms of F. imperialis which like sunny places in a rich soil and are best planted 6” deep on their sides. ...
Biology and Control in the Pacific Northwest
... Although all parts of these nightshade species are considered poisonous, toxicity is thought to vary tremendously based upon environment, plant part, degree of maturity, and genetic makeup of the individual weed. Foliage of many species of Solanum (including potatoes) has been shown to contain toxic ...
... Although all parts of these nightshade species are considered poisonous, toxicity is thought to vary tremendously based upon environment, plant part, degree of maturity, and genetic makeup of the individual weed. Foliage of many species of Solanum (including potatoes) has been shown to contain toxic ...
Hybrid Maize Seed Production Manual
... flowering period of male and female parental lines is important for the success of the good quality hybrid seed production. ...
... flowering period of male and female parental lines is important for the success of the good quality hybrid seed production. ...
An ethnobotanical survey of medicinal plants commercialized in the
... were reported as medicinal and magic plants in the markets of La Paz and El Alto, Bolivia (Table 1). One voucher specimen was unidentified. The family with the largest number of plant species was by far Asteraceae with 22 species, followed by Fabaceae s.l. with 11, and Solanaceae with eight. The fam ...
... were reported as medicinal and magic plants in the markets of La Paz and El Alto, Bolivia (Table 1). One voucher specimen was unidentified. The family with the largest number of plant species was by far Asteraceae with 22 species, followed by Fabaceae s.l. with 11, and Solanaceae with eight. The fam ...
Ecology of Banksia
The ecology of Banksia refers to all the relationships and interactions among the plant genus Banksia and its environment. Banksia has a number of adaptations that have so far enabled the genus to survive despite dry, nutrient-poor soil, low rates of seed set, high rates of seed predation and low rates of seedling survival. These adaptations include proteoid roots and lignotubers; specialised floral structures that attract nectariferous animals and ensure effective pollen transfer; and the release of seed in response to bushfire.The arrival of Europeans in Australia has brought new ecological challenges. European colonisation of Australia has directly affected Banksia through deforestation, exploitation of flowers and changes to the fire regime. In addition, the accidental introduction and spread of plant pathogens such as Phytophthora cinnamomi (dieback) pose a serious threat to the genus's habitat and biodiversity. Various conservation measures have been put in place to mitigate these threats, but a number of taxa remain endangered.