Botany for High Schools and CollegesHolt, 1905 - 611 pàgines |
Altres edicions - Mostra-ho tot
Frases i termes més freqüents
antheridium apex apical cell appear archegonium asci ascospores asexual axis bark Bary bearing become branches cambium carpels carpogonium cavity cell-wall chlorophyll chlorophyll-bearing color common composed conidia contain cotyledons cultivated developed Dicotyledons Eastern United elongated embryo endosperm epidermis Europe fertilization fibro-vascular bundles filaments fission flowers formation fruits genera genus germ-cell germination give rise grains grow growth herbs hypha hyphæ Indian inner lateral layer leaf leaves less longitudinal section Magnified mass metres mother-cell mycelium native occur oogonium oosphere Order outer ovary ovule parasitic parenchyma partition Phanerogams phloëm phyllome plant-body plants pollen portion produced prothallium protoplasm Pteridophytes reproductive root Sachs seeds sexual organs shrubs side sieve tissue species spermatozoids spiral sporangia sporangium spores sporocarp stamens starch stem stomata structure surface surrounded swarm-spores takes place Thallophytes thallus thick thickened thin tion tracheary transverse trees tropical tube usually vegetable vertical vessels wall whorls wood xylem young zoospores
Passatges populars
Pàgina iv - Lehrbuch," and in many instances it has seemed to me that I could not do better than to adopt the particular treatment which a subject has received at the hands of the distinguished German botanist.
Pàgina 552 - JV. eifrulea and N. Lotus are common on the Nile. Victoria regia, the Victoria Lily of the Amazon Valley in South America, is remarkable for the size of its leaves and flowers ; the former are peltate, perfectly circular, and two metres or more in diameter, and the slender petioles are often three metres long ; the flowers resemble those of our White Water Lilies, and are twenty-five to thirty centimetres in diameter ; upon Brat opening they are pure white, but upon opening a second time they are...
Pàgina 558 - Contributions to the Fossil Flora of the Western Territories. Part I. The Cretaceous Flora by Leo Lesquereux.
Pàgina iii - Aims to lead the student to obtain at first-hand his knowledge of the anatomy and physiology of plants. Accordingly, the presentation of matter is such as to fit the book for constant use in the laboratory, the text supplying the outline sketch which the student is to fill in by the aid of scalpel and microscope. From JC ARTHUR, Editor of The Botanical Gazette: "The first botanical text-book issued in America which treats the most important departments of the science with anything like due consideration....
Pàgina 200 - ... the things classified are arranged according to the totality of their morphological resemblances, and the features which are taken as the marks of groups are those which have been ascertained by observation to be the indications of many likenesses or unlikenesses.
Pàgina 213 - ... say from 600 to 800 diameters.^ § III. CLASS CYANOPHYCE.E. 281. — These are blue-green, verdigris-green, brownish green, or rarely purple or red Protophytes, which, in addition to chlorophyll, contain a soluble coloring-matter — * "Yeast is, in fact, nothing more than a peculiar condition of a species of Penicillium, which is capable of almost endless propagation without ever bearing perfect fruit.
Pàgina 518 - ... underground work, and largely exported for railway sleepers. Vessels built of this timber have been enabled to do away with all copperplating.
Pàgina 1 - Hint -which is sensitive, which moves, appropriates food, and increases in size. This sensitive, moving, assimilating, and growing substance is named PROTOPLASM.* .^ It is a fact of great biological interest that in animals the essential constituent of all living parts is a substance similar to the protoplasm of plants. We cannot distinguish the two by any chemical or physical tests, and can only say that, taken as a whole, the protoplasm of plant* * So named by its discoverer.
Pàgina 458 - ... some parts of India and other countries, the white albumen of the nut forms nearly the entire food of the natives, and the milk serves them for drink. In this country great quantities are used as a delicacy and for culinary purposes. In cocoa-nut countries the uses of the root, stem, leaves, and fruit are said to be as numerous as the days in the year, sufficing for all the wants of the inhabitants. The root is used as a masticatory ; the stem is used for the...