Growth and Reproductive Phenology of Welwitschia Mirabilis Hook. F.
... Welwitschia mirabilis Hook. f. is a monotypic species grouped with the genus Ephedra and Gnetum under the plant Division Gnetophyta, a small group of seed plants having intermediate characteristics between Angiosperms and Gymnosperms. The relationship of Gnetophyta with other seed plants has been wi ...
... Welwitschia mirabilis Hook. f. is a monotypic species grouped with the genus Ephedra and Gnetum under the plant Division Gnetophyta, a small group of seed plants having intermediate characteristics between Angiosperms and Gymnosperms. The relationship of Gnetophyta with other seed plants has been wi ...
Fl. China 23: 22–23. 2010. 15. AGLAONEMA Schott, Wiener Z
... 1–9 per each floral sympodium; peduncle shorter or longer than petioles, sometimes deflexed in fruit. Spathe caducous, persistent, or marcescent, erect, green to whitish, boat-shaped to convolute, not differentiated into tube and blade, ovate to ± globose, slightly to strongly decurrent, often apicu ...
... 1–9 per each floral sympodium; peduncle shorter or longer than petioles, sometimes deflexed in fruit. Spathe caducous, persistent, or marcescent, erect, green to whitish, boat-shaped to convolute, not differentiated into tube and blade, ovate to ± globose, slightly to strongly decurrent, often apicu ...
anatomical and chemical adaptation of spartium junceum l. in arid
... sclerenchyma fibers appear (Fig. 3). These anatomical features are characteristic of the photosynthetic stem (Bowes, 1996). Recessed stomata are almost regularly found above the groups of palisade cells. The average number of stomata per 1 mm2 of stem is almost the same as that of the leaf, but the ...
... sclerenchyma fibers appear (Fig. 3). These anatomical features are characteristic of the photosynthetic stem (Bowes, 1996). Recessed stomata are almost regularly found above the groups of palisade cells. The average number of stomata per 1 mm2 of stem is almost the same as that of the leaf, but the ...
Chapter 39 – Plant Responses to Internal and External Signals
... Response to a hormone usually depends not so much on its absolute concentration as on its relative concentration compared to other hormones. ...
... Response to a hormone usually depends not so much on its absolute concentration as on its relative concentration compared to other hormones. ...
Dracaena decline and root rot
... many of which are popular prized species used for interior and exterior landscaping. In Hawaii, cultivars of D. Jragrans, D. deremensis, D. marginata, D. rejlexa, and D. sanderana are important for landscaping as well as for export. Dracaena surculosa and D. goldieana are also grown for indoor use. ...
... many of which are popular prized species used for interior and exterior landscaping. In Hawaii, cultivars of D. Jragrans, D. deremensis, D. marginata, D. rejlexa, and D. sanderana are important for landscaping as well as for export. Dracaena surculosa and D. goldieana are also grown for indoor use. ...
Anatomy - Helping Material for Botany
... represented by over 12,000 species. While many ferns are smaller herbaceous plants, larger tree-like ferns still exist. A type of tree related to ferns was present in the oldest known forest. Middle Devonian fossil trunks from Gilboa, New York provide a window into the earliest forests (click on pic ...
... represented by over 12,000 species. While many ferns are smaller herbaceous plants, larger tree-like ferns still exist. A type of tree related to ferns was present in the oldest known forest. Middle Devonian fossil trunks from Gilboa, New York provide a window into the earliest forests (click on pic ...
Flower numbers, pod production, pollen viability, and pistil function
... plants reached the ovary in the WW plants, less than 3% of pollen grains reached the ovary when pollen from either WS or WW plants was placed on a stigma of a WS plant. It is concluded that, in addition to pod abortion, flower abortion is an important factor limiting yield in chickpea exposed to ter ...
... plants reached the ovary in the WW plants, less than 3% of pollen grains reached the ovary when pollen from either WS or WW plants was placed on a stigma of a WS plant. It is concluded that, in addition to pod abortion, flower abortion is an important factor limiting yield in chickpea exposed to ter ...
identifying ohio`s noxious weeds
... broad genetic base. It is believed that natural crossing between diverse sorghum types produced the present day shattercane. There is considerable variation in this species and mature plants may range from 4 to 12 feet. Life cycle: annual Habitat: cultivated fields – especially cereal crops Leaf: 1 ...
... broad genetic base. It is believed that natural crossing between diverse sorghum types produced the present day shattercane. There is considerable variation in this species and mature plants may range from 4 to 12 feet. Life cycle: annual Habitat: cultivated fields – especially cereal crops Leaf: 1 ...
Cell Wall to Cell: Microscopic Forensic Botany
... Forensic botany includes a wide variety of subdisciplines, from ecology and limnology to palynology and molecular biology. Plant anatomy is especially pertinent to trace evidence. For our purposes, botanical materials will include any portion of higher and lower plants, algaes (including diatoms), a ...
... Forensic botany includes a wide variety of subdisciplines, from ecology and limnology to palynology and molecular biology. Plant anatomy is especially pertinent to trace evidence. For our purposes, botanical materials will include any portion of higher and lower plants, algaes (including diatoms), a ...
International Journal of Current Research in Biosciences and Plant
... of the herbal potential possessed by the plant growing in this area and their sustainability for the welfare of human race. ...
... of the herbal potential possessed by the plant growing in this area and their sustainability for the welfare of human race. ...
lecture outline
... In general, plant hormones control plant growth and development by affecting the division, elongation, and differentiation of cells. Some hormones also mediate shorter-term physiological responses of plants to environmental stimuli. Each hormone has multiple effects, depending on its site of action, ...
... In general, plant hormones control plant growth and development by affecting the division, elongation, and differentiation of cells. Some hormones also mediate shorter-term physiological responses of plants to environmental stimuli. Each hormone has multiple effects, depending on its site of action, ...
Slide 1
... •400 to 800 adults & nymphs / plant •Late fall •Leaf chlorosis & abscission •TSA fruit/seed production reduced •Pest of Tomato, Potato, Pepper, etc. ...
... •400 to 800 adults & nymphs / plant •Late fall •Leaf chlorosis & abscission •TSA fruit/seed production reduced •Pest of Tomato, Potato, Pepper, etc. ...
How Does a Garden Grow
... a glass jar with a lid and add water to the top of the jar. Screw on the lid. Shake the jar vigorously for half a minute. (hold secure with both hands) Allow the jar to sit until the dirt and the water start to settle down. The soil will settle into layers. 2. Observe the layers in the jar and see w ...
... a glass jar with a lid and add water to the top of the jar. Screw on the lid. Shake the jar vigorously for half a minute. (hold secure with both hands) Allow the jar to sit until the dirt and the water start to settle down. The soil will settle into layers. 2. Observe the layers in the jar and see w ...
Tuart and weed Guide - Friends of Trigg Bushland
... This handout will be available for use during tuart mapping. ...
... This handout will be available for use during tuart mapping. ...
Chapter 3: Reproduction of Organisms
... Because males produce sperm and females produce eggs, one of the disadvantages of sexual reproduction is getting egg and sperm together for fertilization. Some species, such as the sea urchin shown in Figure 4, produce millions of egg cells or sperm cells and release them into water. This increases ...
... Because males produce sperm and females produce eggs, one of the disadvantages of sexual reproduction is getting egg and sperm together for fertilization. Some species, such as the sea urchin shown in Figure 4, produce millions of egg cells or sperm cells and release them into water. This increases ...
Chapter 35 Reproduction in Flowering Plants
... • Pistil • May consist of either –A single carpel or –A group of fused carpels ...
... • Pistil • May consist of either –A single carpel or –A group of fused carpels ...
Agastache x hybrida Agastache arizona™ sun
... •Unique compact dome-shaped habit •Plants cover and recover themselves in upright non-fading blooms •Flower beds, baskets and containers •Bounces back quickly after a rain •Petunia x atkinsiana TAKII & CO. LTD. ...
... •Unique compact dome-shaped habit •Plants cover and recover themselves in upright non-fading blooms •Flower beds, baskets and containers •Bounces back quickly after a rain •Petunia x atkinsiana TAKII & CO. LTD. ...
The evolution of plants: a major problem for Darwinism
... this time there are no known living or fossil forms that unequivocally link any two of the proposed divisions’ [emphasis added].25 Evidence for the origin of almost all plant divisions and classes listed above is totally lacking, and little evidence exists as to the origin of any land plants, in s ...
... this time there are no known living or fossil forms that unequivocally link any two of the proposed divisions’ [emphasis added].25 Evidence for the origin of almost all plant divisions and classes listed above is totally lacking, and little evidence exists as to the origin of any land plants, in s ...
We would soon notice if our woodlands lost their flowers. Along with
... nemorosa), also known as the ‘wind flower’. The white star-like flowers appear in March and are not proper petals at all; they are actually white sepals, or calyx segments. The blue flowers of Common Dog-violet (Viola riviniana) offer a lovely contrast to the white of the wind flowers. Flowering sta ...
... nemorosa), also known as the ‘wind flower’. The white star-like flowers appear in March and are not proper petals at all; they are actually white sepals, or calyx segments. The blue flowers of Common Dog-violet (Viola riviniana) offer a lovely contrast to the white of the wind flowers. Flowering sta ...
The Woody Plant Seed Manual
... believe that all Zamia taxa in Florida belong to a single species (FNAEC 1993). The taproot gradually contracts, pulling the plant downward, leaving only the upper part of the stem above soil level. Coontie fixes nitrogen in upward-growing branching roots that terminate in nodules with cyanobacteria ...
... believe that all Zamia taxa in Florida belong to a single species (FNAEC 1993). The taproot gradually contracts, pulling the plant downward, leaving only the upper part of the stem above soil level. Coontie fixes nitrogen in upward-growing branching roots that terminate in nodules with cyanobacteria ...
Quick Reference Guide to Invasive Plant Species
... By contrast, invasive plants come from outside this geographic area. When they are introduced, there is potential for them to establish themselves and disrupt established ecosystems forcing out native plants. Fewer native plants results in decreased biodiversity. This can mean less food and shelter ...
... By contrast, invasive plants come from outside this geographic area. When they are introduced, there is potential for them to establish themselves and disrupt established ecosystems forcing out native plants. Fewer native plants results in decreased biodiversity. This can mean less food and shelter ...
Flowering plant
The flowering plants (angiosperms), also known as Angiospermae or Magnoliophyta, are the most diverse group of land plants. Angiosperms are seed-producing plants like the gymnosperms and can be distinguished from the gymnosperms by characteristics including flowers, endosperm within the seeds, and the production of fruits that contain the seeds. Etymologically, angiosperm means a plant that produces seeds within an enclosure, in other words, a fruiting plant.The ancestors of flowering plants diverged from gymnosperms around 245–202 million years ago, and the first flowering plants known to exist are from 160 million years ago. They diversified enormously during the Lower Cretaceous and became widespread around 120 million years ago, but replaced conifers as the dominant trees only around 60–100 million years ago.