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Division II: Eumycota Subdivision: Mastigomycotina, class
Division II: Eumycota Subdivision: Mastigomycotina, class

... formation, a bubble-like protoplast moves into the vesicle and the zoospores are formed in this vesicle. When the crowded zoospores start rocking motion and bounce on the wall, the delicate vesicle bursts like a soap bubble. In the sexual reproduction oogonia and antheridia are produced. Antheridia ...
Preliminary phytochemical screening and micromeretic
Preliminary phytochemical screening and micromeretic

... concluded that the above pharmacognostical characteristics, phytochemical parameters, Micromeretic parameters, together may be utilized for the future studies on O. sanctum L. leaves and might be useful to supplement information about its identification parameters assumed significantly in the way of ...
Basic Botany - University of Idaho Extension
Basic Botany - University of Idaho Extension

... There are problems, however, with using common names. The same species of plant may have two or more common names, with names ...
Lesser celandine - Delaware Invasive Species Council, Inc.
Lesser celandine - Delaware Invasive Species Council, Inc.

... short period above ground so when spraying timing is crucial. It is best to spray lesser celandine as soon as it appears above ground in January. This will also limit the effect on native wild flowers since most native species will not have emerged. Glyphosate (Roundup for uplands and Rodeo for wetl ...
Rainforest Seasons
Rainforest Seasons

... Bengal Bamboo Bengal Bamboo can grow between 40 and 80 feet tall.  It grows very tall, fast so it gets lots of rain and sunlight.  The long and narrow leaves grow on opposite sides of the plant in two columns.  In two to three months it’s full grown.  It’s life span is 25 to 40 years. ...
notes on the plants used by the klamath indians of oregon.
notes on the plants used by the klamath indians of oregon.

... Wi'-ko.-The lodge-pole pine, also called black pine and tamarack pine, an abundant tree in the low and moist portions of the yellow-pine forests. Sections of bark from trunks of the proper size are often used to make buckets for gathering berries, particularly huckleberries. The cylinder of bark is ...
3. stem traits - Uni Oldenburg
3. stem traits - Uni Oldenburg

... A minimum of 5 replicates (i.e. individuals) of representative healthy adults should be sampled, as described for canopy height (foliage exposed to sunlight). For herbaceous and woody species with a main stem diameter of ≤ 6 cm, a branchless section of at least 10 cm long section is cut out (knife) ...
CHAPTER 36
CHAPTER 36

... o A species may have one leaf per node (alternate, or spiral, phyllotaxy), two leaves per node (opposite phyllotaxy), or more (whorled phyllotaxy). o Most angiosperms have alternate phyllotaxy, with leaves arranged in an ascending spiral around the stem. o Each successive leaf emerges about 137.5 f ...
1. Creeping spurge
1. Creeping spurge

... are solid and triangular in cross section; height to 40cm; tubers up to 1 inch at maturity Propagation: from tubers formed on rhizomes as deep as 8-14 inches below the soil surface (though majority occur in the top 6 inches of soil), new plants form from buds on tubers, forming patches up to 10 feet ...
Notes on Key Species for Energy Production
Notes on Key Species for Energy Production

... espacements, the crop could be expected to produce small diameter material within 18 months. For larger fuelwood blocks attention needs to be given to the problems of access and some unplanted strips need to be left. The recommendations from the work carried out in Sri Lanka being that if an espacem ...
Mosses and Lichens - Association for Biology Laboratory Education
Mosses and Lichens - Association for Biology Laboratory Education

... fertilized almost simultaneously but usually only one zygote predominates and germinates, the others being hormonally suppressed or aborted. The viable diploid zygote germinates in place and remains attached to the gametophore. Growth is initially bipolar, but growth in the direction of the gametoph ...
5.5 Classification
5.5 Classification

... • STEMS, ROOTS, LEAVES • Vascular bundles (xylem, phloem) • Waxy cuticle • Annual or perennial, up to 100 m • Repro structure = ovules in enclosed carpal; pollen grains produced by anthers • Seeds in fruit (ovary)! – (NO cones)  animal pollination often ...
Common trees of North Carolina
Common trees of North Carolina

... • Leaves are broadly oblong, pointed, 4-6 inches long, small dark veins on the underside • Fruit is reddish purple, 1-2 inches and only on females • Bark is dark and deeply divided in to small, square plates • Not found in mountains • Used to make clubheads for golf clubs ...
Conifers: The Backbone of the Winter Landscape
Conifers: The Backbone of the Winter Landscape

... enough food through photosynthesis to sustain them during the winter, conifers never truly go dormant. As part of photosynthesis, plants lose moisture through their leaves in a process called transpiration. For this reason, it is important that conifers receive an adequate amount of water going into ...
May – Jun 2006 - Bromeliad Society of Queensland
May – Jun 2006 - Bromeliad Society of Queensland

... PLANT (by Bob Reilly) While we grow bromeliads because of their interesting shape, foliage or infloresence, the story behind many of them can be just as captivating. One such plant is Cryptanthus ‘It.’ This plant has the typical star-shape of most cryptanthus. In good light, the plant’s cream margin ...
Brush Cherry Care Sheet
Brush Cherry Care Sheet

... zones 10B and 11, otherwise can successfully be grown indoors. In summer, Eugenia likes the heat, while it prefers winter temperatures between 4668F. Eugenia does not like draughts or a lot of variation in temperature. Lighting: Full sun to part shade. Appreciates a bright position, about 1500 Lux, ...
Chapter 22: Plant Structure and Function
Chapter 22: Plant Structure and Function

... Collenchyma cells If you have eaten celery, you might be familiar with collenchyma (coh LENG kuh muh) cells. These cells make up those long strings that you can pull from a celery stalk. Collenchyma cells are plant cells that often are elongated and occur in long strands or cylinders that provide su ...
Identifying Tree Diseases
Identifying Tree Diseases

... and takes two years or longer to complete its life -cycle. Starting in the spring (February-April), orange aeciospores are produced on gall surfaces. These aeciospores are dispersed by wind and infect the leaves of susceptible oaks, where they cause leaf spots. After one week, bright orange urediosp ...
Annuals in the Perennial Garden
Annuals in the Perennial Garden

... (180cm x 30cm) Orach is another of those plants with a long history of cultivation, though it is rarely used as a food nowadays. The leaves can be cooked and used like spinach, they have a bland flavour and are traditionally mixed with sorrel leaves in order to modify the acidity of the latter. Ther ...
Bryophytes
Bryophytes

... b. Sporopollenin is the most durable organic material known. c. Spores are produced by sporangia (cells in the sporophyte) through the process of meiosis. d. Durable spores are an adaptation for surviving on land. •Can withstand long periods of adverse conditions. •Easily transported by wind and wat ...
Forest Floor Ltd Bamboo Catalogue
Forest Floor Ltd Bamboo Catalogue

... take as low as -10.5. Bambusa oldhamii has been reported to survive -9 but is not usually recommended below -7 Celcius unless protected from wind. These temperatures are the minimum that an established plant can take for a short duration,and still grow back. Leaf burn and shoot damage will probably ...
Journal i The Bromeliad Society
Journal i The Bromeliad Society

... Introduction. Stomata are the microscopic structures on vascular plants that are responsible for the regulation of gas exchange. That function includes both the uptake of CO2 from the atmosphere to be used in photosynthesis, and transpira tion, the process controlling the loss of water vapor from pl ...
FNR 250 Are Trees Getting Fat Too?
FNR 250 Are Trees Getting Fat Too?

... different between animals and plants. For mammals the circulatory system is dependent on the pumping action of the heart and blood, a specialized living tissue consisting of several components, one of which is plasma. About 55 percent of blood is plasma, a straw-colored clear liquid. Dissolved in th ...
Weeds of the Hunter and Central Coast
Weeds of the Hunter and Central Coast

... The diversity in nature and land use in the Hunter and Central Coast allows for the introduction of a broad range of weeds. Garden escapes threaten the biodiversity of local bushland while other plants cause hayfever and contact dermatitis in humans. Highly invasive pasture weeds are poisonous or un ...
Functional aspects of cell patterning in aerial epidermis
Functional aspects of cell patterning in aerial epidermis

... stomata [12]. In the roots of Arabidopsis, these same cell files form root hairs. Although the pre-pattern imposes constraints on the cell files that can form stomata, the same orientated divisions that position the guard cells surrounded by subsidiary cells in leaves also occur within the determine ...
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Leaf



A leaf is an organ of a vascular plant and is the principal lateral appendage of the stem. The leaves and stem together form the shoot. Foliage is a mass noun that refers to leaves collectively.Typically a leaf is a thin, dorsiventrally flattened organ, borne above ground and specialized for photosynthesis. Most leaves have distinctive upper (adaxial) and lower (abaxial) surfaces that differ in colour, hairiness, the number of stomata (pores that intake and output gases) and other features. In most plant species, leaves are broad and flat. Such species are referred to as broad-leaved plants. Many gymnosperm species have thin needle-like leaves that can be advantageous in cold climates frequented by snow and frost. Leaves can also have other shapes and forms such as the scales in certain species of conifers. Some leaves are not above ground (such as bulb scales). Succulent plants often have thick juicy leaves, but some leaves are without major photosynthetic function and may be dead at maturity, as in some cataphylls, and spines). Furthermore, several kinds of leaf-like structures found in vascular plants are not totally homologous with them. Examples include flattened plant stems (called phylloclades and cladodes), and phyllodes (flattened leaf stems), both of which differ from leaves in their structure and origin. Many structures of non-vascular plants, and even of some lichens, which are not plants at all (in the sense of being members of the kingdom Plantae), look and function much like leaves. The primary site of photosynthesis in most leaves (palisade mesophyll) almost always occurs on the upper side of the blade or lamina of the leaf but in some species, including the mature foliage of Eucalyptus palisade occurs on both sides and the leaves are said to be isobilateral.
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