An Introduction to Systematic and Physiological BotanyHilliard and Brown, 1830 - 363 σελίδες |
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1-celled 5-cleft anthers appear bark base berry bractes branches bundles calyx capsule cells cellular centre character clusters color common species commonly compound consists containing corolla corymbs costæ cotyledones cultivated cuticle dicotyledonous distinct divided divisions epidermis fasciculi fertile flowers fibres filaments flat florets flowers fluid foliar fruit genera genus germ glume Grasses green growing herbaceous imbricated ingrafted involucrum kind lanceolate layers leaf leaves legume ligneous Linnæus lobes longitudinal margin microscope monocotyledonous naked natural family natural order nearly oblong organs ovate pappus peculiar peduncles perennial perfect pericarp petals petiole pistils pith plants Plate vii pollen pores produced proper juice racemes receptacle remarkable resembling roots scales seeds sessile sheath shrubs silicle silique spikes spiral vessels stamens stamina stem stigma structure style succulent summit surface terminated ternate transverse tree tribe tube tuberous tubular umbel United upper valves vascular vegetable wood yellow
Δημοφιλή αποσπάσματα
Σελίδα ii - Co. of the said district, have deposited in this office the title of a book, the right whereof they claim as proprietors, in the words following, to wit : " Tadeuskund, the Last King of the Lenape. An Historical Tale." In conformity to the Act of the Congress of the United States...
Σελίδα 76 - Already now the snow-drop dares appear, The first pale blossom of the unripened year ; As Flora's breath, by some transforming power, Had changed an icicle into a flower : Its name and hue the scentless plant retains, And winter lingers in its icy veins.
Σελίδα ii - Brown, of the said district, have deposited in this office the title of a book, the right whereof they claim as proprietors, in the words following, to wit : " An Introduction to Systematic and Physiological Botany. By Thomas Nuttall, AMFLS &c.
Σελίδα 331 - Rachis. The common stalk to which the florets and spikelets of grasses are attached. Also the midrib of some leaves and fronds. Radiate. Having ligulate florets placed like rays at the circumference...
Σελίδα 292 - ... and a third, thin and expanded, encloses the other two, or forms the covering for both surfaces of the leaf. On a closer examination we find that the first of these parts is vascular, the second cellular, and the third a transparent cuticular pellicle. Admitting, therefore, that these parts are present in every leaf, although we may not be able to discover all of them distinctly, owing to the imperfection of our instruments ; we may conduct our inquiries into the structure of leaves in reference...
Σελίδα 330 - Polygamous. Having some flowers which are perfect, and others which have stamens only, or pistils only.
Σελίδα 329 - Pellicle. A very thin stratum, or coat. Peltate. Having the stalk attached to some part of the surface or disk, and not to the margin ; as in Nasturtium, May-apple (Podophyllum), &c.
Σελίδα 5 - In the whole of this tribe you will perceive that the stems are simple and unbranched, the leaves entire, never cut or divided; observations which confirm the analogy of the flower and fruit in this family, by the prevailing similarity in the other parts of the plant. By bestowing some attention upon these particulars, and making them familiar by frequent observation, you will be in a condition to determine...
Σελίδα 269 - In the shoot we are now examing, cut iu the autumn, the bark when separated from the wood is about the 16th part of an inch in thickness, and appears to the naked eye, composed of 4 distinct parts. 1. A dry, leathery, fawn-colored, semi-transparent, tough membrane, which is the cuticle ; 2. a cellular layer which adheres, although not very firmly, to the cuticle, and is named the cellular integument ; 3. a vascular layer ; and 4. a whitish layer, apparently of a fibrous texture, which is the inner...
Σελίδα 332 - Segment. A part or principal division of a leaf, calyx, or corolla. Semibivalvular. Half divided into two valves.